Extra inning

World Series

• Most extra innings played in a World Series game: 9 (2018, game 3), (2025, game 3). Further, game 3 of 2018 was the longest World Series game played in terms of elapsed time.
• Most extra innings played over the course of a World Series: 11 (2025). The previous record was tied by the large number of extra innings in 2025's game 3 alone, and exceeded by extra innings in game 7.
• Most innings played over the course of a World Series: 75 (1912). 1912 was one of seven historically unusual Series: four (1903, 1919, 1920, 1921) were best-of-nine contests, and three (1907, 1912, 1922) were best-of-seven contests which each had one tie game apiece. In the 1912 Series, game 2 concluded as an 11-inning tie and the Series-deciding game 8 went for 10 innings, padding the Series' total inning count to 75.
• Most innings played over the course of a standard World Series: 74 (2025). "Standard" denotes best-of-seven Series which had no tie games, excluding the seven above Series.
• Most games running to extra innings, played over the course of a World Series: 3 (1991). No other Series has had more than two games running to extra innings.