1959 – The Giants and Cubs set a record for the longest 9-inning game in history, playing 3 hours and 50 minutes. Chicago wins the marathon at Wrigley Field by a score of 20 – 9, pounding out 19 hits and five home runs. Eddie Fisher takes the loss while Ed Donnelly is the winner.

This Day In Baseball

On August 13, 1959 — 1959 – The Giants and Cubs set a record for the longest 9-inning game in history, playing 3 hours and 50 minutes. Chicago wins the marathon at Wrigley Field by a score of 20 – 9, pounding out 19 hits and five home runs. Eddie Fisher takes the loss while Ed Donnelly is the winner.

Source:
Baseball Reference August 13
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game