Baseman (noun)

A player on a baseball team who occupies a position on the field known as first, second, or third base.

Origin:

Base + -man.

Examples:

1. The baseman was quick to react to the ground ball hit his way.
2. The baseman made an excellent catch to save a run.
3. The first baseman was the team leader in runs batted in.
4. The second baseman was known for his quick reflexes.
5. The third baseman made a great play to get the runner out at first base.