The 1920 Brooklyn Robins, also known as the Dodgers, won 16 of their final 18 games to pull away from a tight pennant race and earn a trip to their second World Series against the Cleveland Indians. They lost the series in seven games.

The team featured four Hall of Famers: manager Wilbert Robinson, pitchers Burleigh Grimes and Rube Marquard, and outfielder Zack Wheat. Grimes anchored a pitching staff that allowed the fewest runs in the majors.

• January 1920: Frank O'Rourke was purchased from the Robins by the Washington Senators.^[1]
• January 12, 1920: Mack Wheat was purchased from the Robins by the Philadelphia Phillies.^[2]
• March 1920: Bill Lamar was purchased by the Robins from the Boston Red Sox.^[3]

On May 1, Brooklyn and the Boston Braves played what remains the longest major league baseball game, tied 1 to 1 at the end of nine innings and then going scoreless for 17 more until the game 26-inning game was called because of darkness ^[4]

On October 10, 1920, which was the fifth game of the World Series, Elmer Smith of the Indians hit the first grand slam in World Series history. On the same day, Bill Wambsganss of the Indians had an unassisted triple play. He caught a liner, touched second base, and tagged the runner coming from first base.^[8] During that same game, Indians pitcher Jim Bagby became the first pitcher to hit a home run in World Series history.^[9]