There used to be 50 more no-hitters on the record books, but in September 1991 the Committee for Statistical Accuracy, chaired by then MLB Commissioner Fay Vincent, changed the official definition of a no hitter, declaring it a game of nine innings or more that ends with no hits. That leaves 322 sanctioned no-hitters (300 in the A.L. and N.L.), detailed here.
The stringent definition eliminated 36 no-hitters from the books that were shortened by rain, darkness or other reasons (and one after the decision), as well as two losing efforts by the away team in which the home team doesn’t bat in the bottom of the ninth. (Three such no-nos have been thrown since 1991 that would have qualified under the old rules.) This list is also providing a home for the 7-inning doubleheader no-hitters that became a thing in the pandemic-laden years of 2020 and 2021.
The 1991 ruling also wiped out 12 no-hitters by pitchers who threw nine innings of no-hit ball only to yield a hit in extra innings. That narrow definition kept Pedro Martínez out of the exclusive no-no club, even though his ball is featured in the National Baseball Hall of Fame’s “No-Nos and Perfectos” exhibit. Martínez threw nine innings of perfect ball against the Padres on June 3, 1995, but his Expos couldn’t score a run and Martínez wound up giving up a hit in the 10th. The rule also keeps Rich Hill’s 2017 nine-inning no-no (killed on a walk-off homer in the 10th) and the Tampa Bay Rays’ 2022 combined no-no through nine from ever reaching the record books.
The New York Giants’ Red Ames lost two no-hitters. Ames in 1903 threw a five-inning rain-shortened no-hitter, then he threw nine innings of no-hit ball on Opening Day of 1909 only to give up a single in the 10th and lose the game in the 13th. He’s officially credited with zero no-nos.
The accomplishments listed here aren’t considered official no-hitters, but they are recognized in other sections of the Elias Sports Bureau record books in their own categories: