High Quality Content by WIKIPEDIA articles! 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". This is a rare accomplishment for a pitcher or pitching staff: only 279 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 most recent no-hitter was thrown on September 28, 2012, by Homer Bailey of the Cincinnati Reds, against the Pittsburgh Pirates at PNC Park.