St. Louis Browns hurler Ernie Koob pitches a complete game going all 17 innings in 0 – 0 tie. Boston Red Sox Carl Mays pitches the first 15 innings with Dutch Leonard finishing the game.

On July 14, 1916 St. Louis Browns hurler Ernie Koob pitches a complete game going all 17 innings in 0 – 0 tie. Boston Red Sox Carl Mays pitches the first 15 innings with Dutch Leonard finishing the game.

Source
Baseball Reference July 14