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Spinning Baseball The Perfect Game Spinning Baseball

A perfect game is defined by Major League Baseball as a game in which a pitcher (or combination of pitchers) pitches a victory that lasts a minimum of nine innings and in which no opposing player reaches first base.

Thus, the pitcher (or pitchers) cannot allow any hits, walks, hit batsmen, or any opposing player to reach base safely for any other reason.

In short, "27 up, 27 down".

By definition, a perfect game must be both a no-hitter and a shutout.

Since the pitcher cannot control whether or not his teammates commit any errors, the pitcher must be backed up by solid fielding to pitch a perfect game.

An error that does not allow a base runner, such as a misplayed foul ball, does not spoil a perfect game.

Weather-shortened contests in which a team has no base runners and games in which a team reaches first base only in extra innings do not qualify as official under the present definition.

The first confirmed use of the term "perfect game" was in 1908; the current official definition of the term was formalized in 1991.

Although it is possible for multiple pitchers to combine for a perfect game (as has happened nine times at the major league level for a no-hitter), to date each major league perfect game has been a complete game by just a single pitcher.

Over the past 132 years of Major League Baseball history, there have been only 20 official perfect games by the current definition (about one every eight years).

In sum, a perfect game occurs once in about every 11,000 major league contests.

For comparison, more people have orbited the moon than have pitched a Major League Baseball perfect game.

No pitcher has ever thrown more than one.
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