A no-hitter is defined by Major League Baseball

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A no-hitter is defined by Major League Baseball as follows: "An official no-hit game occurs when a pitcher (or pitchers) allows no hits during the entire course of a game, which consists of at least nine innings.This definition was specified by MLB's Committee for Statistical Accuracy in 1991, causing previously recognized no-hitters of fewer than nine innings or where the first hit had been allowed in extra innings to be stricken from the official record books. Games lost by the visiting team in 8½ innings but without allowing any hits do not qualify as no-hitters, as the visiting team has only pitched eight innings.

In baseball, a no-hitter (also known as a no-hit game and colloquially as a no-no) is a game in which a team was not able to record a single hit. Major League Baseball officially defines a no-hitter as a completed game in which a team that batted in at least nine innings recorded no hits. A pitcher who prevents the opposing team from achieving a hit is said to have "thrown a no-hitter". Most of the time, a no-hitter is also a shutout. However, as it is possible to reach base without a hit (most commonly via a walk, error, or hit batsman), a pitcher can throw a no-hitter and still give up runs, and even lose the game, although this is extremely uncommon. In 25 recorded no-hitters in MLB history, one or more runs were given up, most recently by Ervin Santana of the Los Angeles Angels of Anaheim in a 3-1 win against the Cleveland Indians on July 27, 2011.This is a rare accomplishment for a pitcher or pitching staff: only 275 have been thrown in Major League Baseball history since 1875, an average of about two per year. In most cases in MLB, no-hitters are recorded by a single pitcher who throws a complete game. The last no-hitter was thrown on June 1, 2012, by New York Mets pitcher Johan Santana, the first no-hitter in Mets franchise history.Perfect game nolan ryan, mlb, sandy koufax, perfect game baseball, jon lester, red sox, espn, john lester pictures, no hitter, no hitter vs perfect game.