The Oakland Athletics are a Major League Baseball franchise based in Oakland, California. They play in the American League West division. Also known in their early years as the "Philadelphia Athletics" (1901–1954) and "Kansas City Athletics" (1954–1967), pitchers for the Athletics have thrown thirteen no-hitters in franchise history, five during the Philadelphia years and eight after the move to Oakland but none during the Kansas City era. A no-hitter is officially recognized by Major League Baseball only "when a pitcher (or pitchers) allows no hits during the entire course of a game, which consists of at least nine innings", though one or more batters "may reach base via a walk, an error, a hit by pitch, a passed ball or wild pitch on strike three, or catcher's interference". No-hitters of less than nine complete innings were previously recognized by the league as official; however, several rule alterations in 1991 changed the rule to its current form. Two perfect games, a special subcategory of no-hitter, have been pitched in Athletics history. As defined by Major League Baseball, "in a perfect game, no batter reaches any base during the course of the game." These feats were achieved by Catfish Hunter in 1968, which was the first perfect game in American League history since 1922, and Dallas Braden in 2010, which was the second perfect game in the majors – both against the same team – in ten months. Weldon Henley threw the first no-hitter in Athletics history on July 22, 1905; the most recent no hitter was thrown by Mike Fiers on May 7, 2019. Only three left-handed pitchers have thrown no-hitters in franchise history and the other nine pitchers were right-handed. Vida Blue is the only pitcher in Athletics history to have thrown more than one no-hitter in an Athletics uniform, include the starting pitcher in a combined no-hitter. Nine no-hitters were thrown at home and three on the road. They threw four in May, one in June, one in July, one in August, and five in September. The longest interval between no-hitters was between the games pitched by Bullet Joe Bush and Fowler, encompassing 29 years and 14 days from August 26, 1916, till September 9, 1945. Conversely, the shortest interval between no-hitters was between the games pitched by Sean Manaea and Mike Fiers, encompassing merely 1 year and 16 days from April 21, 2018, till May 7, 2019. The