Baseball rules the winner. This is known as a walk-off. The basic contest is always between the "pitcher" for the fielding team, and a "batter". The pitcher throws—"pitches"—the ball towards home plate, where the "catcher" for the fielding team waits (in a crouched stance) to receive it. Behind the catcher stands the home plate umpire. The batter stands in one of the batter's boxes and tries to hit the ball with a bat. The pitcher must keep one foot in contact with the top or front of the pitcher's rubber — a 24×6 in (61×15 cm) plate located atop the pitcher's mound
History of baseball in the United States put new balls into play whenever the current ball became scuffed or discolored. This rule change was enforced all the more stringently following the death of Ray Chapman, who was struck in the temple by a pitched ball from Carl Mays in a game on August 16, 1920 (he died the next day). Discolored balls, harder for batters to see and therefore harder for batters to dodge, have been rigorously removed from play ever since. There are two side effects. One, of course, is that if the batter can see the ball more easily, the batter can hit the ball