Perfect game (baseball)

[2] To achieve a perfect game, a team must not allow any opposing player to reach base by any means: no hits, walks, hit batsmen, uncaught third strikes, catcher's interference, fielder's obstruction, or fielding errors which allow a batter to reach base.

A fielding error that does not allow a batter to reach base, such as a misplayed foul ball, does not spoil a perfect game.

I. E. Sanborn's report for the Chicago Tribune about Addie Joss's performance against the White Sox calls it "an absolutely perfect game, without run, without hit, and without letting an opponent reach first base by hook or crook, on hit, walk, or error, in nine innings".

[9] There has been one perfect game in the World Series, thrown by Don Larsen for the New York Yankees against the Brooklyn Dodgers on October 8, 1956.

[11][12] The most recent perfect game for MLB occurred on June 28, 2023, with Domingo Germán of the New York Yankees against the Oakland Athletics in an 11–0 victory, finishing with 9 strikeouts.

[13] Germán became the first-ever pitcher born in the Dominican Republic to throw a perfect game in the MLB, as well as the third-ever non-American-born player to do so, and was the first pitcher to throw a perfect game with the pitch clock and batting clock rules in effect.

[16] Since MLB implementation of the softball variant of the WBSC tie-breaker in 2020, the offensive team is awarded a free runner on second base each half-inning during extra innings.

Another rule change effective for two seasons (2020–2021) stipulated that games that are part of doubleheaders last only seven innings.

Four of its players pitched a perfect game: Annabelle Lee in 1944, Carolyn Morris in 1945, Doris Sams in 1947, and Jean Faut in 1951 (against the Rockford Peaches) and again in 1953 (against the Kalamazoo Lassies).

[28] On August 23, 1957, Ángel Macías (12) from the Monterrey, Mexico, team pitched the only perfect game of the Little League World Series, in Williamsport, Pennsylvania.

[30] Four Puerto Rico pitchers combined for an 8-inning perfect game against Israel in the 2023 World Baseball Classic.