Max Muncy hit a walk-off home run against the Boston Red Sox in the 18th inning of Game 3 of the 2018 World Series, capping off the longest game in World Series history at 7 hours and 20 minutes. The game began on October 26 and finished in the early morning hours of October 27 at Dodger Stadium.
From the collection: Max Muncy fan-cave plaque →
Source: Historical record