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   <meta charset="utf-8" />
   <meta name="generator" content="pandoc" />
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-  <meta name="dcterms.date" content="2022-01-01" />
+  <meta name="dcterms.date" content="2023-04-28" />
   <title>Chicago Metropolitan Baseball Association</title>
   <style>
     html {
@@ -154,7 +154,7 @@
 <header id="title-block-header">
 <h1 class="title">Chicago Metropolitan Baseball Association</h1>
 <p class="subtitle">Constitution and By-Laws</p>
-<p class="date">2022-01-01</p>
+<p class="date">2023-04-28</p>
 </header>
 <nav id="TOC" role="doc-toc">
 <ul>
@@ -255,13 +255,16 @@
 <li><a href="#designated-runner"><span class="toc-section-number">12.11</span> Designated Runner</a></li>
 <li><a href="#extra-hitter"><span class="toc-section-number">12.12</span> Extra Hitter</a></li>
 <li><a href="#courtesy-runner"><span class="toc-section-number">12.13</span> Courtesy Runner</a></li>
-<li><a href="#field-status"><span class="toc-section-number">12.14</span> Field Status</a></li>
-<li><a href="#rescheduling"><span class="toc-section-number">12.15</span> Rescheduling</a></li>
-<li><a href="#notification-of-results"><span class="toc-section-number">12.16</span> Notification of Results</a></li>
-<li><a href="#uncompleted-games"><span class="toc-section-number">12.17</span> Uncompleted Games</a></li>
-<li><a href="#substitution-of-an-umpire"><span class="toc-section-number">12.18</span> Substitution of an Umpire</a></li>
-<li><a href="#collisions"><span class="toc-section-number">12.19</span> Collisions</a></li>
-<li><a href="#umpire-disputes"><span class="toc-section-number">12.20</span> Umpire Disputes</a></li>
+<li><a href="#batting-lineup"><span class="toc-section-number">12.14</span> Batting Lineup</a></li>
+<li><a href="#ab-batting-lineup-slots"><span class="toc-section-number">12.15</span> A/B Batting Lineup Slots</a></li>
+<li><a href="#defensive-lineup"><span class="toc-section-number">12.16</span> Defensive Lineup</a></li>
+<li><a href="#field-status"><span class="toc-section-number">12.17</span> Field Status</a></li>
+<li><a href="#rescheduling"><span class="toc-section-number">12.18</span> Rescheduling</a></li>
+<li><a href="#notification-of-results"><span class="toc-section-number">12.19</span> Notification of Results</a></li>
+<li><a href="#uncompleted-games"><span class="toc-section-number">12.20</span> Uncompleted Games</a></li>
+<li><a href="#substitution-of-an-umpire"><span class="toc-section-number">12.21</span> Substitution of an Umpire</a></li>
+<li><a href="#collisions"><span class="toc-section-number">12.22</span> Collisions</a></li>
+<li><a href="#umpire-disputes"><span class="toc-section-number">12.23</span> Umpire Disputes</a></li>
 </ul></li>
 <li><a href="#protest-and-forfeits"><span class="toc-section-number">13</span> Protest and Forfeits</a>
 <ul>
@@ -509,7 +512,16 @@ Each team’s roster must contain a minimum of sixteen (16) players and shall no
 <p>A player must inform the League President and his manager no later than February 15 of the upcoming season if he wishes to leave his team and become a free agent. After this he is free to play for another team in the CMBA. A manager may waive this deadline for an individual player at the manager’s discretion. If the player fails to notify as specified, that player shall be disqualified from playing on another CMBA team for that season.</p>
 <h1 data-number="12" id="general-play"><span class="header-section-number">12</span> General Play</h1>
 <h2 data-number="12.1" id="playing-rules"><span class="header-section-number">12.1</span> Playing Rules</h2>
-<p>The CMBA shall follow the playing rules of the American League with the inclusion and possible exclusion of other rules as found in this document.</p>
+<p>Except where specified in this document, the CMBA shall follow the Official Baseball Rules of Major League Baseball.</p>
+<p>The CMBA shall not incorporate the following rules of Major League Baseball:</p>
+<ul>
+<li>Rule 4.03(c)(4) specifying limitations on when a position player can pitch.</li>
+<li>Rule 5.02(c) specifying limitations on infielder placement.</li>
+<li>Rule 7.01(b) incorporating the parameters of the Extra Innings Rule, which includes starting each half-inning following the last regu lation inning with a runner on second base.</li>
+<li>Rule 5.10(m)(1) limiting the number of mound visits.</li>
+<li>Rule 5.10(g) requiring that pitchers must face at least three batters.</li>
+<li>Rules 5.07(c) specifying time limits on pitchers and batters. Limitations on pitcher disengagments (i.e. pick-offs) shall also not be incorporated.</li>
+</ul>
 <h2 data-number="12.2" id="regulation-games"><span class="header-section-number">12.2</span> Regulation Games</h2>
 <p>Games played under the auspices of both recognized Managers of the participating teams shall count as official. A regulation game is defined as follows</p>
 <ol type="1">
@@ -546,21 +558,31 @@ Each team’s roster must contain a minimum of sixteen (16) players and shall no
 <li><p>Should a team fall below the minimum, the game is terminated and the team loses by forfeit.</p></li>
 </ol>
 <h2 data-number="12.6" id="player-injuries"><span class="header-section-number">12.6</span> Player Injuries</h2>
-<p>Should a player suffer a debilitating injury during the game and cannot continue, and a team has no more eligible players on it’s bench, a team can use a player that was removed from the game to replace him. This replacement player must be the first player removed from the game, and if this player is unavailable the next player is used (and so on).</p>
+<p>Should a player suffer a debilitating injury during the game and cannot continue, and a team has no more eligible players on its bench, a team can use a player that was removed from the game to replace him. This replacement player must be the first player removed from the game, and if this player is unavailable the next player is used (and so on). If no reserve is present, the vacated spot in the lineup is skipped and all batters move up accordingly, with no penalty to the affected team.</p>
+<ol type="1">
+<li>If a substantial case can be made that a team skipped a spot with the intent to gain a competitive advantage, a protest by the opposing team may retroactively be ruled as a forfeit.</li>
+</ol>
 <h2 data-number="12.7" id="equipment"><span class="header-section-number">12.7</span> Equipment</h2>
 <ol type="1">
 <li>Baseballs: Only Major League regulation balls will be allowed for game play. Accepted brands and ball types include, but are not limited to, the Rawlings RO series, Wilson A1000 series, and Diamond D-1 series. The home team must supply two (2) and the visitors one (1) ball at the start of each game. Additional balls shall be supplied alternately by each team beginning with the visiting team. Teams that supply non-approved balls shall forfeit the game.</li>
 <li>Bats: All bats must be wood or BBCOR certified. Use of an illegal bat shall be subject to the Major League rules that govern this area.</li>
-<li>Bases, home plate, and pitching rubber: All teams are expected to have a set of bases, a home plate, and a pitching rubber. The home team shall be responsible for accurately setting up the bases, and if necessary, home plate and the pitching rubber. Should the home team fail to have these necessities by the start of the game, they will lose by forfeit. The visiting team can lend the equipment, although they are not required to do so.</li>
+<li>Bases, home plate, and pitching rubber: All teams are expected to have a set of bases, a home plate, and a pitching rubber. These items shall conform to Major League Baseball specifications. Items conforming to 2022 specifications shall also be considered legal.</li>
 </ol>
+<p>The home team shall be responsible for accurately setting up the bases, and if necessary, home plate and the pitching rubber. Should the home team fail to have these necessities by the start of the game, they will lose by forfeit. The visiting team can lend the equipment, although they are not required to do so.</p>
 <h2 data-number="12.8" id="field-maintenance"><span class="header-section-number">12.8</span> Field Maintenance</h2>
 <p>All teams are responsible for the maintenance and cleanup of the field and dugout areas after a game. Both teams must fill in all infield, batter’s box, and pitching mound holes. Additionally, both teams must have adequate equipment on hand for field maintenance. Teams who repeatedly fail to do proper post-game maintenance shall be fined.</p>
 <h2 data-number="12.9" id="payment-of-umpires"><span class="header-section-number">12.9</span> Payment of Umpires</h2>
 <p>Umpires are to be paid on the field promptly upon request.</p>
 <h2 data-number="12.10" id="designated-hitter"><span class="header-section-number">12.10</span> Designated Hitter</h2>
-<p>The Association shall follow the American League designated hitter rule at all times, however a team may D.H. for any position on the field. Teams are not obligated to play a DH.</p>
+<p>The Association shall follow the Major League designated hitter rule at all times, with the exception that a team may designate a D.H. for any position on the field.</p>
 <h2 data-number="12.11" id="designated-runner"><span class="header-section-number">12.11</span> Designated Runner</h2>
-<p>A team may designate one player to run the bases in place of any one player in the lineup, similar to a designated hitter. The designated runner must take the place of that player whenever that player reaches base. Designated runners are subject to the same substitution limitations as a designated hitter.</p>
+<p>The Association shall elect to use a designated runner rule, similar to the designated hitter rule.</p>
+<ol type="1">
+<li>A runner may be designated to run for a specified player in any game without otherwise affecting the status of the player(s) in the game.</li>
+<li>The designated runner must take the place of the specified player whenever that player reaches base or the designated runner.</li>
+<li>If the specified player is substituted, this substitute player may inherit the designated runner.</li>
+<li>Designated runners are subject to the same substitution rules as the designated hitter as defined in <a href="#designated-hitter">Designated Hitter</a></li>
+</ol>
 <h2 data-number="12.12" id="extra-hitter"><span class="header-section-number">12.12</span> Extra Hitter</h2>
 <p>Prior to the start of the game a team may choose to play an extra hitter (EH). If the team uses this option, the following conditions apply:</p>
 <ol type="1">
@@ -574,28 +596,44 @@ Each team’s roster must contain a minimum of sixteen (16) players and shall no
 <li>Courtesy runners for pitchers and catchers cannot be, or have been, in the game at any time other than as a courtesy runner. Teams with no eligible players remaining on the bench must use the first player taken out of the game or the player that made the last out.</li>
 <li>The pitcher or catcher must play at least one (1) defensive out to be eligible for a courtesy runner unless they reach base in the first inning as a member of the visiting team.</li>
 </ol>
-<h2 data-number="12.14" id="field-status"><span class="header-section-number">12.14</span> Field Status</h2>
-<p>The home team shall be responsible for checking the status of the field in the event of rain. The home team must report to the President on the status of the field no later than 2:00 pm for a weeknight game, and at least 2 hrs. before a weekend game. The visiting manager is encouraged to contact the President for information regarding the status of the field.</p>
+<h2 data-number="12.14" id="batting-lineup"><span class="header-section-number">12.14</span> Batting Lineup</h2>
+<p>The batting lineup shall consist of at minimum 9 slots (or 8 adhering to section <a href="#minimum-number-of-players">Minimum Number of Players</a>). Additional slots may be used without limit (see <a href="#extra-hitter">Extra Hitter</a>). Any player may be substituted in their batting lineup slot by using a pinch-hitter or pinch-runner for that player. The original player may not re-enter the game as a hitter.</p>
+<h2 data-number="12.15" id="ab-batting-lineup-slots"><span class="header-section-number">12.15</span> A/B Batting Lineup Slots</h2>
+<p>In regular season play, any batting lineup slot may be optionally designated as an “A/B” batting slot, meaning it is shared between two players adhering to the following rules:</p>
+<ol type="1">
+<li>The batter designated “A” shall bat the first time through the lineup and the batter designated “B” batting the second time through the lineup, continuing in alternating fashion for the remainder of the game.</li>
+<li>Rules for the substitutions of either “A” or “B” batter are the same as any other batting lineup slot.</li>
+<li>In the event of injury of either player when there are no reserve players available, the uninjured player shall bat in place of the injured player without penalty.</li>
+</ol>
+<p>In postseason play, the A/B batting slot rule defined above shall not be applicable.</p>
+<h2 data-number="12.16" id="defensive-lineup"><span class="header-section-number">12.16</span> Defensive Lineup</h2>
+<p>In regular season play, the defensive line-up is independent of the batting lineup and substitutions shall be allowed as follows:</p>
+<ol type="1">
+<li>Any player may be freely substituted in the defensive line-up at any time, without affecting the players’ in the batting line-up. Players may enter, exit, and re-enter the game in the defensive line-up without limitation.</li>
+</ol>
+<p>In postseason play, the free defensive substitution rule defined above shall not be applicable and substitutions shall be made in accordance to applicable CMBA and MLB rules.</p>
+<h2 data-number="12.17" id="field-status"><span class="header-section-number">12.17</span> Field Status</h2>
+<p>The home team shall be responsible for checking the status of the field in the event of rain. The home team must report the status of the field to the President and the assigned umpire no later than 2:00 pm for a weeknight game, and at least 2 hrs. before a weekend game. As a courtesy, the home team should also notify the visiting manager, but the visiting manager may also contact the President for information regarding the status of the field.</p>
 <ol type="1">
 <li>Any manager who knowingly falsifies information regarding the status of the field to avoid playing the game will be fined and the team will forfeit the game.</li>
 </ol>
-<h2 data-number="12.15" id="rescheduling"><span class="header-section-number">12.15</span> Rescheduling</h2>
+<h2 data-number="12.18" id="rescheduling"><span class="header-section-number">12.18</span> Rescheduling</h2>
 <p>Managers from both teams must contact the President to confirm any changes that they wish to make to the official schedule. Teams may not change times, places, or dates of games without the consent of the President. Any such games played shall be considered unofficial. Any postponed or suspended games must be rescheduled in a timely fashion by the managers of that game for the next possible date. If managers cannot come to an agreement in a timely fashion, the President may reschedule the game.</p>
-<h2 data-number="12.16" id="notification-of-results"><span class="header-section-number">12.16</span> Notification of Results</h2>
+<h2 data-number="12.19" id="notification-of-results"><span class="header-section-number">12.19</span> Notification of Results</h2>
 <p>The winning team shall be responsible for notifying the President of the score of the game no later than 10:00 AM the day after the game was played via text message, email, or telephone call.</p>
-<h2 data-number="12.17" id="uncompleted-games"><span class="header-section-number">12.17</span> Uncompleted Games</h2>
+<h2 data-number="12.20" id="uncompleted-games"><span class="header-section-number">12.20</span> Uncompleted Games</h2>
 <p>All games not completed by the end of the regular season shall count as losses for both teams unless a team deliberately attempts to avoid playing a sanctioned game. The team that was willing to play the game will be judged the forfeit winner if so ruled by the President.</p>
-<h2 data-number="12.18" id="substitution-of-an-umpire"><span class="header-section-number">12.18</span> Substitution of an Umpire</h2>
+<h2 data-number="12.21" id="substitution-of-an-umpire"><span class="header-section-number">12.21</span> Substitution of an Umpire</h2>
 <p>Should a league sanctioned umpire fail to appear at game time, the teams can choose to play the game with an umpire(s) of mutual choosing. The President needs to be informed by both teams prior to the start of the game to make it official.</p>
-<h2 data-number="12.19" id="collisions"><span class="header-section-number">12.19</span> Collisions</h2>
+<h2 data-number="12.22" id="collisions"><span class="header-section-number">12.22</span> Collisions</h2>
 <p>NO COLLISIONS ARE ALLOWED, UNLESS THE CONTACT RESULTS FROM A SLIDE. It is the base runners responsibility to slide or avoid contact. Fielders and runners must abide by Official Baseball Rules regarding Interference, Obstruction, and Catcher Collisions.. Unless the umpire rules that the contact was incidental or the result of Obstruction by the fielder, the runner shall be called out, the ball declared dead and the runner automatically ejected from the game. Per <a href="#flagrant-collisions">Flagrant Collisions</a>. if the collision is determined by the umpire to be flagrant the player may be subject to the further penalty as defined in that section.</p>
-<h2 data-number="12.20" id="umpire-disputes"><span class="header-section-number">12.20</span> Umpire Disputes</h2>
+<h2 data-number="12.23" id="umpire-disputes"><span class="header-section-number">12.23</span> Umpire Disputes</h2>
 <p>Discussion of a disputed umpires call shall be limited to the managers, base coaches and the “aggrieved player. No player or other coach (third party) shall be allowed to leave the dugout or his defensive position to join in. The penalty for violating this rule shall be the immediate ejection from the game.</p>
 <h1 data-number="13" id="protest-and-forfeits"><span class="header-section-number">13</span> Protest and Forfeits</h1>
 <h2 data-number="13.1" id="timeframe-and-reporting"><span class="header-section-number">13.1</span> Timeframe and Reporting</h2>
 <p>All protests must be filed with the President within 48 hours of the alleged infraction and on the League supplied form. All requested information must be accurately reported. Any manager who knowingly falsifies information on the protest form will be fined and suspended as determined by the President, and that manager’s team will forfeit the game.</p>
 <h2 data-number="13.2" id="ground-for-protest"><span class="header-section-number">13.2</span> Ground for Protest</h2>
-<p>Protests may only be made on the grounds of a violation of a rule stated in this Constitution and its By-Laws or in violation of a stated American League rule. Protests may not, under any circumstances, be based on the judgment of an umpire’s call. The protesting team’s manager must notify the umpire of the protest at the time the violation occurred. Managers shall notify the league president at the earliest possible time after the game and provide umpire signature as proof of notification.</p>
+<p>Protests may only be made on the grounds of a violation of a rule stated in this Constitution and its By-Laws or in violation of a stated Major League Baseball rule. Protests may not, under any circumstances, be based on the judgment of an umpire’s call. The protesting team’s manager must notify the umpire of the protest at the time the violation occurred. Managers shall notify the league president at the earliest possible time after the game and provide umpire signature as proof of notification.</p>
 <h2 data-number="13.3" id="ruling"><span class="header-section-number">13.3</span> Ruling</h2>
 <p>Upon the filing of a protest with the President, the President shall call a meeting of the Rules and Competition Committee at the earliest possible date. Judgment regarding the merit of the protest shall be made after deliberation.</p>
 <h2 data-number="13.4" id="notification"><span class="header-section-number">13.4</span> Notification</h2>
diff --git a/build/cmba-bylaws.pdf b/build/cmba-bylaws.pdf
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index db28bfc..63e9308 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,7 @@
   <meta charset="utf-8" />
   <meta name="generator" content="pandoc" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes" />
-  <meta name="dcterms.date" content="2022-01-01" />
+  <meta name="dcterms.date" content="2023-04-28" />
   <title>Chicago Metropolitan Baseball Association</title>
   <style>
     html {
@@ -154,7 +154,7 @@
 <header id="title-block-header">
 <h1 class="title">Chicago Metropolitan Baseball Association</h1>
 <p class="subtitle">Constitution and By-Laws</p>
-<p class="date">2022-01-01</p>
+<p class="date">2023-04-28</p>
 </header>
 <nav id="TOC" role="doc-toc">
 <ul>
@@ -255,13 +255,16 @@
 <li><a href="#designated-runner"><span class="toc-section-number">12.11</span> Designated Runner</a></li>
 <li><a href="#extra-hitter"><span class="toc-section-number">12.12</span> Extra Hitter</a></li>
 <li><a href="#courtesy-runner"><span class="toc-section-number">12.13</span> Courtesy Runner</a></li>
-<li><a href="#field-status"><span class="toc-section-number">12.14</span> Field Status</a></li>
-<li><a href="#rescheduling"><span class="toc-section-number">12.15</span> Rescheduling</a></li>
-<li><a href="#notification-of-results"><span class="toc-section-number">12.16</span> Notification of Results</a></li>
-<li><a href="#uncompleted-games"><span class="toc-section-number">12.17</span> Uncompleted Games</a></li>
-<li><a href="#substitution-of-an-umpire"><span class="toc-section-number">12.18</span> Substitution of an Umpire</a></li>
-<li><a href="#collisions"><span class="toc-section-number">12.19</span> Collisions</a></li>
-<li><a href="#umpire-disputes"><span class="toc-section-number">12.20</span> Umpire Disputes</a></li>
+<li><a href="#batting-lineup"><span class="toc-section-number">12.14</span> Batting Lineup</a></li>
+<li><a href="#ab-batting-lineup-slots"><span class="toc-section-number">12.15</span> A/B Batting Lineup Slots</a></li>
+<li><a href="#defensive-lineup"><span class="toc-section-number">12.16</span> Defensive Lineup</a></li>
+<li><a href="#field-status"><span class="toc-section-number">12.17</span> Field Status</a></li>
+<li><a href="#rescheduling"><span class="toc-section-number">12.18</span> Rescheduling</a></li>
+<li><a href="#notification-of-results"><span class="toc-section-number">12.19</span> Notification of Results</a></li>
+<li><a href="#uncompleted-games"><span class="toc-section-number">12.20</span> Uncompleted Games</a></li>
+<li><a href="#substitution-of-an-umpire"><span class="toc-section-number">12.21</span> Substitution of an Umpire</a></li>
+<li><a href="#collisions"><span class="toc-section-number">12.22</span> Collisions</a></li>
+<li><a href="#umpire-disputes"><span class="toc-section-number">12.23</span> Umpire Disputes</a></li>
 </ul></li>
 <li><a href="#protest-and-forfeits"><span class="toc-section-number">13</span> Protest and Forfeits</a>
 <ul>
@@ -509,7 +512,16 @@ Each team’s roster must contain a minimum of sixteen (16) players and shall no
 <p>A player must inform the League President and his manager no later than February 15 of the upcoming season if he wishes to leave his team and become a free agent. After this he is free to play for another team in the CMBA. A manager may waive this deadline for an individual player at the manager’s discretion. If the player fails to notify as specified, that player shall be disqualified from playing on another CMBA team for that season.</p>
 <h1 data-number="12" id="general-play"><span class="header-section-number">12</span> General Play</h1>
 <h2 data-number="12.1" id="playing-rules"><span class="header-section-number">12.1</span> Playing Rules</h2>
-<p>The CMBA shall follow the playing rules of the American League with the inclusion and possible exclusion of other rules as found in this document.</p>
+<p>Except where specified in this document, the CMBA shall follow the Official Baseball Rules of Major League Baseball.</p>
+<p>The CMBA shall not incorporate the following rules of Major League Baseball:</p>
+<ul>
+<li>Rule 4.03(c)(4) specifying limitations on when a position player can pitch.</li>
+<li>Rule 5.02(c) specifying limitations on infielder placement.</li>
+<li>Rule 7.01(b) incorporating the parameters of the Extra Innings Rule, which includes starting each half-inning following the last regu lation inning with a runner on second base.</li>
+<li>Rule 5.10(m)(1) limiting the number of mound visits.</li>
+<li>Rule 5.10(g) requiring that pitchers must face at least three batters.</li>
+<li>Rules 5.07(c) specifying time limits on pitchers and batters. Limitations on pitcher disengagments (i.e. pick-offs) shall also not be incorporated.</li>
+</ul>
 <h2 data-number="12.2" id="regulation-games"><span class="header-section-number">12.2</span> Regulation Games</h2>
 <p>Games played under the auspices of both recognized Managers of the participating teams shall count as official. A regulation game is defined as follows</p>
 <ol type="1">
@@ -546,21 +558,31 @@ Each team’s roster must contain a minimum of sixteen (16) players and shall no
 <li><p>Should a team fall below the minimum, the game is terminated and the team loses by forfeit.</p></li>
 </ol>
 <h2 data-number="12.6" id="player-injuries"><span class="header-section-number">12.6</span> Player Injuries</h2>
-<p>Should a player suffer a debilitating injury during the game and cannot continue, and a team has no more eligible players on it’s bench, a team can use a player that was removed from the game to replace him. This replacement player must be the first player removed from the game, and if this player is unavailable the next player is used (and so on).</p>
+<p>Should a player suffer a debilitating injury during the game and cannot continue, and a team has no more eligible players on its bench, a team can use a player that was removed from the game to replace him. This replacement player must be the first player removed from the game, and if this player is unavailable the next player is used (and so on). If no reserve is present, the vacated spot in the lineup is skipped and all batters move up accordingly, with no penalty to the affected team.</p>
+<ol type="1">
+<li>If a substantial case can be made that a team skipped a spot with the intent to gain a competitive advantage, a protest by the opposing team may retroactively be ruled as a forfeit.</li>
+</ol>
 <h2 data-number="12.7" id="equipment"><span class="header-section-number">12.7</span> Equipment</h2>
 <ol type="1">
 <li>Baseballs: Only Major League regulation balls will be allowed for game play. Accepted brands and ball types include, but are not limited to, the Rawlings RO series, Wilson A1000 series, and Diamond D-1 series. The home team must supply two (2) and the visitors one (1) ball at the start of each game. Additional balls shall be supplied alternately by each team beginning with the visiting team. Teams that supply non-approved balls shall forfeit the game.</li>
 <li>Bats: All bats must be wood or BBCOR certified. Use of an illegal bat shall be subject to the Major League rules that govern this area.</li>
-<li>Bases, home plate, and pitching rubber: All teams are expected to have a set of bases, a home plate, and a pitching rubber. The home team shall be responsible for accurately setting up the bases, and if necessary, home plate and the pitching rubber. Should the home team fail to have these necessities by the start of the game, they will lose by forfeit. The visiting team can lend the equipment, although they are not required to do so.</li>
+<li>Bases, home plate, and pitching rubber: All teams are expected to have a set of bases, a home plate, and a pitching rubber. These items shall conform to Major League Baseball specifications. Items conforming to 2022 specifications shall also be considered legal.</li>
 </ol>
+<p>The home team shall be responsible for accurately setting up the bases, and if necessary, home plate and the pitching rubber. Should the home team fail to have these necessities by the start of the game, they will lose by forfeit. The visiting team can lend the equipment, although they are not required to do so.</p>
 <h2 data-number="12.8" id="field-maintenance"><span class="header-section-number">12.8</span> Field Maintenance</h2>
 <p>All teams are responsible for the maintenance and cleanup of the field and dugout areas after a game. Both teams must fill in all infield, batter’s box, and pitching mound holes. Additionally, both teams must have adequate equipment on hand for field maintenance. Teams who repeatedly fail to do proper post-game maintenance shall be fined.</p>
 <h2 data-number="12.9" id="payment-of-umpires"><span class="header-section-number">12.9</span> Payment of Umpires</h2>
 <p>Umpires are to be paid on the field promptly upon request.</p>
 <h2 data-number="12.10" id="designated-hitter"><span class="header-section-number">12.10</span> Designated Hitter</h2>
-<p>The Association shall follow the American League designated hitter rule at all times, however a team may D.H. for any position on the field. Teams are not obligated to play a DH.</p>
+<p>The Association shall follow the Major League designated hitter rule at all times, with the exception that a team may designate a D.H. for any position on the field.</p>
 <h2 data-number="12.11" id="designated-runner"><span class="header-section-number">12.11</span> Designated Runner</h2>
-<p>A team may designate one player to run the bases in place of any one player in the lineup, similar to a designated hitter. The designated runner must take the place of that player whenever that player reaches base. Designated runners are subject to the same substitution limitations as a designated hitter.</p>
+<p>The Association shall elect to use a designated runner rule, similar to the designated hitter rule.</p>
+<ol type="1">
+<li>A runner may be designated to run for a specified player in any game without otherwise affecting the status of the player(s) in the game.</li>
+<li>The designated runner must take the place of the specified player whenever that player reaches base or the designated runner.</li>
+<li>If the specified player is substituted, this substitute player may inherit the designated runner.</li>
+<li>Designated runners are subject to the same substitution rules as the designated hitter as defined in <a href="#designated-hitter">Designated Hitter</a></li>
+</ol>
 <h2 data-number="12.12" id="extra-hitter"><span class="header-section-number">12.12</span> Extra Hitter</h2>
 <p>Prior to the start of the game a team may choose to play an extra hitter (EH). If the team uses this option, the following conditions apply:</p>
 <ol type="1">
@@ -574,28 +596,44 @@ Each team’s roster must contain a minimum of sixteen (16) players and shall no
 <li>Courtesy runners for pitchers and catchers cannot be, or have been, in the game at any time other than as a courtesy runner. Teams with no eligible players remaining on the bench must use the first player taken out of the game or the player that made the last out.</li>
 <li>The pitcher or catcher must play at least one (1) defensive out to be eligible for a courtesy runner unless they reach base in the first inning as a member of the visiting team.</li>
 </ol>
-<h2 data-number="12.14" id="field-status"><span class="header-section-number">12.14</span> Field Status</h2>
-<p>The home team shall be responsible for checking the status of the field in the event of rain. The home team must report to the President on the status of the field no later than 2:00 pm for a weeknight game, and at least 2 hrs. before a weekend game. The visiting manager is encouraged to contact the President for information regarding the status of the field.</p>
+<h2 data-number="12.14" id="batting-lineup"><span class="header-section-number">12.14</span> Batting Lineup</h2>
+<p>The batting lineup shall consist of at minimum 9 slots (or 8 adhering to section <a href="#minimum-number-of-players">Minimum Number of Players</a>). Additional slots may be used without limit (see <a href="#extra-hitter">Extra Hitter</a>). Any player may be substituted in their batting lineup slot by using a pinch-hitter or pinch-runner for that player. The original player may not re-enter the game as a hitter.</p>
+<h2 data-number="12.15" id="ab-batting-lineup-slots"><span class="header-section-number">12.15</span> A/B Batting Lineup Slots</h2>
+<p>In regular season play, any batting lineup slot may be optionally designated as an “A/B” batting slot, meaning it is shared between two players adhering to the following rules:</p>
+<ol type="1">
+<li>The batter designated “A” shall bat the first time through the lineup and the batter designated “B” batting the second time through the lineup, continuing in alternating fashion for the remainder of the game.</li>
+<li>Rules for the substitutions of either “A” or “B” batter are the same as any other batting lineup slot.</li>
+<li>In the event of injury of either player when there are no reserve players available, the uninjured player shall bat in place of the injured player without penalty.</li>
+</ol>
+<p>In postseason play, the A/B batting slot rule defined above shall not be applicable.</p>
+<h2 data-number="12.16" id="defensive-lineup"><span class="header-section-number">12.16</span> Defensive Lineup</h2>
+<p>In regular season play, the defensive line-up is independent of the batting lineup and substitutions shall be allowed as follows:</p>
+<ol type="1">
+<li>Any player may be freely substituted in the defensive line-up at any time, without affecting the players’ in the batting line-up. Players may enter, exit, and re-enter the game in the defensive line-up without limitation.</li>
+</ol>
+<p>In postseason play, the free defensive substitution rule defined above shall not be applicable and substitutions shall be made in accordance to applicable CMBA and MLB rules.</p>
+<h2 data-number="12.17" id="field-status"><span class="header-section-number">12.17</span> Field Status</h2>
+<p>The home team shall be responsible for checking the status of the field in the event of rain. The home team must report the status of the field to the President and the assigned umpire no later than 2:00 pm for a weeknight game, and at least 2 hrs. before a weekend game. As a courtesy, the home team should also notify the visiting manager, but the visiting manager may also contact the President for information regarding the status of the field.</p>
 <ol type="1">
 <li>Any manager who knowingly falsifies information regarding the status of the field to avoid playing the game will be fined and the team will forfeit the game.</li>
 </ol>
-<h2 data-number="12.15" id="rescheduling"><span class="header-section-number">12.15</span> Rescheduling</h2>
+<h2 data-number="12.18" id="rescheduling"><span class="header-section-number">12.18</span> Rescheduling</h2>
 <p>Managers from both teams must contact the President to confirm any changes that they wish to make to the official schedule. Teams may not change times, places, or dates of games without the consent of the President. Any such games played shall be considered unofficial. Any postponed or suspended games must be rescheduled in a timely fashion by the managers of that game for the next possible date. If managers cannot come to an agreement in a timely fashion, the President may reschedule the game.</p>
-<h2 data-number="12.16" id="notification-of-results"><span class="header-section-number">12.16</span> Notification of Results</h2>
+<h2 data-number="12.19" id="notification-of-results"><span class="header-section-number">12.19</span> Notification of Results</h2>
 <p>The winning team shall be responsible for notifying the President of the score of the game no later than 10:00 AM the day after the game was played via text message, email, or telephone call.</p>
-<h2 data-number="12.17" id="uncompleted-games"><span class="header-section-number">12.17</span> Uncompleted Games</h2>
+<h2 data-number="12.20" id="uncompleted-games"><span class="header-section-number">12.20</span> Uncompleted Games</h2>
 <p>All games not completed by the end of the regular season shall count as losses for both teams unless a team deliberately attempts to avoid playing a sanctioned game. The team that was willing to play the game will be judged the forfeit winner if so ruled by the President.</p>
-<h2 data-number="12.18" id="substitution-of-an-umpire"><span class="header-section-number">12.18</span> Substitution of an Umpire</h2>
+<h2 data-number="12.21" id="substitution-of-an-umpire"><span class="header-section-number">12.21</span> Substitution of an Umpire</h2>
 <p>Should a league sanctioned umpire fail to appear at game time, the teams can choose to play the game with an umpire(s) of mutual choosing. The President needs to be informed by both teams prior to the start of the game to make it official.</p>
-<h2 data-number="12.19" id="collisions"><span class="header-section-number">12.19</span> Collisions</h2>
+<h2 data-number="12.22" id="collisions"><span class="header-section-number">12.22</span> Collisions</h2>
 <p>NO COLLISIONS ARE ALLOWED, UNLESS THE CONTACT RESULTS FROM A SLIDE. It is the base runners responsibility to slide or avoid contact. Fielders and runners must abide by Official Baseball Rules regarding Interference, Obstruction, and Catcher Collisions.. Unless the umpire rules that the contact was incidental or the result of Obstruction by the fielder, the runner shall be called out, the ball declared dead and the runner automatically ejected from the game. Per <a href="#flagrant-collisions">Flagrant Collisions</a>. if the collision is determined by the umpire to be flagrant the player may be subject to the further penalty as defined in that section.</p>
-<h2 data-number="12.20" id="umpire-disputes"><span class="header-section-number">12.20</span> Umpire Disputes</h2>
+<h2 data-number="12.23" id="umpire-disputes"><span class="header-section-number">12.23</span> Umpire Disputes</h2>
 <p>Discussion of a disputed umpires call shall be limited to the managers, base coaches and the “aggrieved player. No player or other coach (third party) shall be allowed to leave the dugout or his defensive position to join in. The penalty for violating this rule shall be the immediate ejection from the game.</p>
 <h1 data-number="13" id="protest-and-forfeits"><span class="header-section-number">13</span> Protest and Forfeits</h1>
 <h2 data-number="13.1" id="timeframe-and-reporting"><span class="header-section-number">13.1</span> Timeframe and Reporting</h2>
 <p>All protests must be filed with the President within 48 hours of the alleged infraction and on the League supplied form. All requested information must be accurately reported. Any manager who knowingly falsifies information on the protest form will be fined and suspended as determined by the President, and that manager’s team will forfeit the game.</p>
 <h2 data-number="13.2" id="ground-for-protest"><span class="header-section-number">13.2</span> Ground for Protest</h2>
-<p>Protests may only be made on the grounds of a violation of a rule stated in this Constitution and its By-Laws or in violation of a stated American League rule. Protests may not, under any circumstances, be based on the judgment of an umpire’s call. The protesting team’s manager must notify the umpire of the protest at the time the violation occurred. Managers shall notify the league president at the earliest possible time after the game and provide umpire signature as proof of notification.</p>
+<p>Protests may only be made on the grounds of a violation of a rule stated in this Constitution and its By-Laws or in violation of a stated Major League Baseball rule. Protests may not, under any circumstances, be based on the judgment of an umpire’s call. The protesting team’s manager must notify the umpire of the protest at the time the violation occurred. Managers shall notify the league president at the earliest possible time after the game and provide umpire signature as proof of notification.</p>
 <h2 data-number="13.3" id="ruling"><span class="header-section-number">13.3</span> Ruling</h2>
 <p>Upon the filing of a protest with the President, the President shall call a meeting of the Rules and Competition Committee at the earliest possible date. Judgment regarding the merit of the protest shall be made after deliberation.</p>
 <h2 data-number="13.4" id="notification"><span class="header-section-number">13.4</span> Notification</h2>
diff --git a/src/metadata.yml b/src/metadata.yml
index 36d581f..91e51ef 100644
--- a/src/metadata.yml
+++ b/src/metadata.yml
@@ -1,5 +1,5 @@
 ---
  title: Chicago Metropolitan Baseball Association
  subtitle: Constitution and By-Laws
- date: 2022-01-01
+ date: 2023-04-28
 ---
\ No newline at end of file