Baseball positions
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Defensive positions on a baseball field, with abbreviations and scorekeeper's position numbers (not uniform numbers)
Players
Defensive positions on a baseball field, with abbreviations and scorekeeper’s position numbers (not uniform numbers)
See also the categories Baseball players and Lists of baseball players
The number of players on a baseball roster, or squad, varies by league and by the level of organized play. A Major League Baseball (MLB) team has a roster of 26 players with specific roles. A typical roster features the following players:
- Eight position players: the catcher, four infielders, and three outfielders—all of whom play on a regular basis
- Five starting pitchers who constitute the team’s pitching rotation or starting rotation
- Seven relief pitchers, including one closer, who constitute the team’s bullpen (named for the off-field area where pitchers warm up)
- One backup, or substitute, catcher
- Five backup infielders and backup outfielders, or players who can play multiple positions, known as utility players.
Most baseball leagues worldwide have the DH rule, including MLB, Japan’s Pacific League, and Caribbean professional leagues, along with major American amateur organizations.[21] The Central League in Japan does not have the rule and high-level minor league clubs connected to National League teams are not required to field a DH. In leagues that apply the designated hitter rule, a typical team has nine offensive regulars (including the DH), five starting pitchers, seven or eight relievers, a backup catcher, and two or three other reserve players.
Managers and coaches
The manager, or head coach, oversees the team’s major strategic decisions, such as establishing the starting rotation, setting the lineup, or batting order, before each game, and making substitutions during games—in particular, bringing in relief pitchers. Managers are typically assisted by two or more coaches; they may have specialized responsibilities, such as working with players on hitting, fielding, pitching, or strength and conditioning. At most levels of organized play, two coaches are stationed on the field when the team is at bat: the first base coach and third base coach, who occupy designated coaches’ boxes, just outside the foul lines. These coaches assist in the direction of baserunners, when the ball is in play, and relay tactical signals from the manager to batters and runners, during pauses in play.[26] In contrast to many other team sports, baseball managers and coaches generally wear their team’s uniforms; coaches must be in uniform to be allowed on the field to confer with players during a game.
Umpires
Any baseball game involves one or more umpires, who make rulings on the outcome of each play. At a minimum, one umpire will stand behind the catcher, to have a good view of the strike zone, and call balls and strikes. Additional umpires may be stationed near the other bases, thus making it easier to judge plays such as attempted force outs and tag outs. In MLB, four umpires are used for each game, one near each base. In the playoffs, six umpires are used: one at each base and two in the outfield along the foul lines.
