An outfielder is a player in baseball or softball who plays in the outfield, which is the grassy area beyond the infield. The outfield is divided into three main positions: left fielder, center fielder, and right fielder. Outfielders are responsible for catching fly balls, fielding ground balls, and preventing runners from advancing on the bases. Outfielders need to have good speed, agility, and strong throwing arms to effectively cover large areas of the field. They often work closely with infielders and the pitcher to coordinate defensive plays. Successful outfielders can make crucial catches and help their team win games.