To play baseball you need a ball, a glove, a bat, a helmet, a uniform, and catcher's gear if you are a catcher and a baseball field. It was also been included in the Olympics events in 1992. It was play with the pitcher throws the ball to the catcher, trying to get it past the batter. If you pitch four balls it's a walk and the hitter gets to go to first base. If you swing and miss, it is a strike. Get three strikes on a batter and the batter is out. If the ball is hit one of the players tries to catch the ball. If you hit a ball out of the field it is a home run. If you hit a home run with the bases loaded it is a grand slam. If the fielder catches it in the air with no bounce that batter is out. If the ball hits the ground before it is caught, the fielder tried to get it to a base so another fielder can try to tag the runner out. There are usually 25 players on a team, with nine players on the field at one time. The positions for a baseball game are pitcher, catcher, first base, second base, third base, shortstop, centerfield, left field and right field. Every baseball game has nine innings unless the game is tied. At least 27 batters come up to bat in one game. If the game is tied the game goes on in complete innings until someone scores a run. Each base is 90 feet apart and from both foul poles to home plate is 98 meters. From the farthest part in the outfield fence to home plate is 122 meters and from the pitcher's mound to home plate is 60 feet.