The first baseman's job is to make "force plays" at first base. In a force play, another infielder catches a ball that has touched the ground, and throws it to the first baseman. The first baseman must then touch the batter or the base with the ball before the batter can touch first base. Then the batter is out. First basemen need to have quick feet, stretch well, be quick and know how to catch wild throws. First base is one of the most important positions as a significant number of plays happen there.