A second baseman is a player in the sport of baseball who occupies the second base position on the field. This player is responsible for fielding ground balls, catching line drives, and turning double plays. They often work closely with the shortstop and first baseman to make defensive plays and prevent runs from scoring. In addition to their defensive duties, second basemen also contribute to their team's offense by batting and running the bases. They typically have good agility and quick reflexes, as they need to react swiftly to balls hit in their direction. Overall, the second baseman plays a crucial role in both defense and offense.