Perfect game (baseball)
A perfect game is a game in which a pitcher (or combination of pitchers) throws a full nine-inning game without allowing a single opposing batter on base. This differs from a no-hitter, in that the pitcher(s) may not allow any walks or hit batsmen. By definition, a perfect game will also be a shutout, meaning a game where the opposing team scores no runs.
There have been just 20 perfect games in Major League Baseball history  and only one of those occurred in the postseason. The first perfect game was thrown on June 12, 1880, by Lee Richmond of the Worcester Ruby Legs in a 1-0 defeat of the Cleveland Blues. The most recent such game was thrown by Roy Halladay of the Philadelphia Phillies, who blanked the Florida Marlins on May 29, 2010.
- ↑ Major League Baseball; Rare feats
- ↑ Baseball almanac
- ↑ Rare Feats (English) (HTML). Major League Baseball. Retrieved on May 31, 2010.