The American Association (AA) was a Minor League Baseball league that operated primarily in the Midwestern and South Central United States from 1902 to 1962 and 1969 to 1997. Over a 90-year span, pitchers on its teams pitched 95 no-hitters, which include 5 perfect games. Of these no-hitters, 72 were pitched in games that lasted at least the full nine innings, while 23 were pitched in games shortened due to weather or that were played in doubleheaders. Only three of the league's five perfect games were tossed in full nine-inning games. Five no-hitters were combined—thrown by two or more pitchers on the same team.