Umpires are officials in sports, primarily in baseball and softball, responsible for enforcing the rules of the game. They make decisions on plays, such as whether a pitch is a strike or ball, and whether a runner is safe or out. Umpires ensure fair play and maintain the flow of the game. In addition to baseball, umpires also work in other sports like cricket and tennis, where they oversee matches and make calls on various plays. Their role is crucial for maintaining the integrity of the game, as they are trained to interpret the rules and handle disputes that may arise during play.