Player rosters
how many pitchers are in a rotation?
Baseball
Player rosters. Roster, or squad, sizes differ between different leagues and different levels of organized play. Major League Baseball teams maintain 25-player active rosters. A typical 25-man roster in a league without the DH rule, such as MLB's National League, features: eight position players—catcher, four infielders, three outfielders—who play on a regular basis five starting pitchers who constitute the team's pitching rotation or starting rotation six relief pitchers, including one specialist closer, who constitute the team's bullpen (named for the off-field area where pitchers warm up) one backup, or substitute, catcher two backup infielders two backup outfielders one specialist pinch hitter, or a second backup catcher, or a seventh reliever