As of now (April 23, 2012) there have been 21 perfect games thrown. Most recently was April 21, 2012 by Philip Humber of the Chicago White Sox against the Seattle Mariners.
In baseball history there have only been 18 perfect games by 18 different pitchers.
Roy Halladay has thrown only one perfect game, and he is only the 20th player to pitch a perfect game in major league baseball history.
100,000
there have only ever been 18 perfect games in baseball history.
He only pitched one perfect game, It was the 20th perfect game ever pitched in MLB history.
Yabkees
700,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000.0000000000000000000000000000000000
nobody has ever pitched more than one.
11,305,896 as of December 2 2008
There have actually been thousands of Major League Baseball games in history. In fact, most MLB games are played without errors.
No, Both American and National league baseball games are 9 innings long
21 games 1935 Chicago cubs