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 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". The feat has been achieved 23 times in MLB history – 21 times since the modern era began in 1900, most recently by Félix Hernández of the Seattle Mariners on August 15, 2012.

A perfect game is also a no-hitter and a shutout. A fielding error that does not allow a batter to reach base, such as a misplayed foul ball, does not spoil a perfect game. Weather-shortened contests in which a team has no baserunners and games in which a team reaches first base only in extra innings do not qualify as perfect games under the present definition. The first confirmed use of the term "perfect game" was in 1908; the current definition of the term was formalized in 1991. Although it is possible for multiple pitchers to combine for a perfect game (as has happened 11 times at the major league level for a no-hitter), to date, every major league perfect game has been thrown by a single pitcher. In Nippon Professional Baseball, no-hitters or perfect games that use two or more pitchers are considered unofficial.

A perfect game is the highest score possible in a game of bowling, achieved by rolling a strike during every frame. In bowling games that use 10 pins, such as ten-pin bowling, candlepin bowling, and duckpin bowling, the highest possible score is 300, achieved by bowling 12 strikes in a row in a single game: one strike in each of the first nine frames, and three more in the tenth frame. Because a strike counts as ten pins plus any pinfall in the next two balls, 30 points are possible in a given frame.

In five-pin bowling, the highest possible score is 450, as a strike is worth 15 pins. It is rare to bowl or witness one. The Canadian Five Pin Bowlers Association approves from 10 to 40 perfect games per year.

300 game

Certification process

Before a 300 game is recognized by the certifying body of the league or tournament, a series of tests are conducted by the local or regional bowling association. First, the bowler and league (or tournament) must be in good standing with the organization. In earlier years, the bowling ball(s) used in the scoring was taken for testing (hardness, weighting, and other aspects that would otherwise break the organization's regulations). Also, the lanes used in the scoring were shut down after the last game of the day was completed. The official then used a tape reader to test the oil condition, to make sure it met the organization's regulations. The data was then sent to the certifying body, and the score received final certification or not a few days to a few weeks later.

A Perfect game is a baseball win credited to a single pitcher that throws a complete game of at least nine innings without allowing any opponent to reach first base. This term may also refer to:

See also