<P> The 1986 American League Championship Series between the Boston Red Sox and the then named California Angels featured a dramatic game where The Angels were leading 3 games to 1 and leading 5--4 in game 5, one strike away from the first ever pennant in franchise history, only for Red Sox's Dave Henderson hit a two - run homer off Angel closer Donnie Moore in the top of the ninth inning to give the Red Sox the lead . The Angels tied it in the bottom half but in the top of the 11th, Henderson's sac fly off Moore proved to be the winning margin and the Angels lost the game . The series returned to Boston and the Angels were outscored a combined 18--5 in games 6 and 7 to lose the pennant . </P> <P> The 1986 World Series between the New York Mets and Boston Red Sox went into extra innings in Game 6 as well . The Red Sox scored 2 runs in the top of the 10th inning to take a 5 - 3 lead and then got two quick outs with no one on base in the bottom of the 10th . With the Red Sox one out away from their first world championship in 86 years, reliever Calvin Schiraldi gives up three straight singles to cut the lead to one run with runners on first and third . Red Sox manager John McNamara replaces Schiraldi with Bob Stanley, who then throws a two - strike wild pitch to Mookie Wilson to allow the tying run to score and move the other runner to second base . The wild pitch was particularly notable in that it completely turned the tables on the Red Sox from what they had done while facing the Angels weeks earlier, as they themselves had now blown a situation in which they were one strike away from winning the series . Wilson subsequently hits a ground ball to first base that rolls through the legs of first baseman Bill Buckner to allow the winning run to score from second base, sending the World Series to a Game 7 . Had Buckner not committed this error, the game would have either remained tied with runners on first and third for the next batter (if Wilson was safe) or would have gone to an 11th inning (if Wilson had been out). </P> <P> The 1980 National League Championship Series, played between the Houston Astros and the Philadelphia Phillies, had four of its five games go to extra innings . The Astros won the second and third games in 10 and 11 innings respectively, while the Phillies took Games 4 and 5 in 10 innings each . </P> <P> The 2012 American League Division Series between the Baltimore Orioles and the New York Yankees had back - to - back extra inning games, going 12 and 13 innings respectively . The Yankees won Game 3 on a walk - off home run by Raúl Ibañez and the Orioles returned the favor the next night by winning Game 4 . </P>

Record number of innings in a mlb game