Rules Reference

4.03 (entire) Exchange of lineup cards at the plate meeting
5.10(a, d) Substituting for players (not pitchers) & double switch
5.10(f, g, h, i) Substitution rules for pitchers
5.10(j) Unannounced substitutions
5.10(b, c) Manager reports subs to plate umpire
5.10(e) Courtesy runner not allowed
5.11 Designated hitter rule and substitutions
7.02(c) Substitutions and suspended game