Baseball
- batter
(baseball) a ballplayer who is batting.
- pitcher
(baseball) the person who does the pitching; "our pitcher has a sore arm".
- base runner
A baseball player on the team at bat who is on base (or attempting to reach a base).
Also contains
- fielder
A member of the baseball team that is in the field instead of at bat.
- little leaguer
A player between 8 and 12 years of age who is a member of a little-league team.
- utility man
A baseball player valued for the ability to play at several positions.
- major leaguer
A member of a major-league baseball team.
- minor leaguer
A player on a minor-league baseball team.