Boston Braves play the longest game in major league baseball history.

May 1, 1920

The Braves and Brooklyn Dodgers play to a 1-1 tie in 26 innings at Braves Field. Although the longest in terms of innings played, the game takes only 3 hours and 50 minutes to play Boston’s Joe Oeschger and Brooklyn’s Leon Cadore each pitch complete games.

Sources
  • Boston Herald