List of Major League Baseball game sevens
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In Major League Baseball (MLB), a game seven can occur in the World Series or in a League Championship Series (LCS), which are contested as best-of-seven series. Based on the playoffs format arrangement, game seven — when necessary — is played in the ballpark of the team holding home-field advantage for the series.

The World Series first employed a best-of-seven format in 1905. That format has been used annually since then, with three exceptions: 1919, 1920, and 1921, which were contested as best-of-nine series. While it was played with the best-of-seven format, the 1912 World Series went to eight games due to one of the earlier games ending in a tie, necessitating a tiebreaker.
The League Championship Series began as best-of-five series, in both the American League and the National League, in 1969. Since the 1985 season, they have used a best-of-seven format.
A game seven cannot occur in earlier rounds of the MLB postseason, as the Division Series (best-of-five) and Wild Card Series (best-of-three) use shorter formats.
Key
| (#) | Extra innings (the number indicates the number of extra innings played) |
|---|---|
| † | Indicates the team that won a game seven after coming back from an 0–3 series deficit |
| § | Indicates the team that lost a game seven after coming back from an 0–3 series deficit |
| Road* | Indicates a game seven that was won by the road team |
| Year (X) | Indicates the number of game sevens played in that year's World Series or LCS:
|
| Team (#) | Indicates team and the number of game sevens played by that team at that point |
All-time game sevens
World Series
League Championship Series
All-time standings
Recurring game seven matchups
| Count | Matchup | Record | Years Played |
|---|---|---|---|
| 4 | Brooklyn/ Los Angeles Dodgers vs. New York Yankees | Yankees, 3–1 | 1947, 1952, 1955, 1956 |
| 2 | New York Yankees vs. St. Louis Cardinals | Cardinals, 2–0 | 1926, 1964 |
| 2 | Detroit Tigers vs. St. Louis Cardinals | Tie, 1–1 | 1934, 1968 |
| 2 | Boston Red Sox vs. St. Louis Cardinals | Cardinals, 2–0 | 1946, 1967 |
| 2 | Atlanta/ Milwaukee Braves vs. New York Yankees | Tie, 1–1 | 1957, 1958 |
| 2 | Baltimore Orioles vs. Pittsburgh Pirates | Pirates, 2–0 | 1971, 1979 |
| 2 | San Francisco Giants vs. St. Louis Cardinals | Tie, 1–1 | 1987, 2012 |
| 2 | Atlanta Braves vs. Pittsburgh Pirates | Braves, 2–0 | 1991, 1992 |
| 2 | Boston Red Sox vs. New York Yankees | Tie, 1–1 | 2003, 2004 |