On October 26, 2018, the Los Angeles Dodgers and Boston Red Sox began Game 3 of the World Series, which became the longest World Series game in MLB history at 18 innings and 7 hours, 20 minutes. Max Muncy hit a walk-off home run in the 18th inning to give the Dodgers the victory, only the second walk-off homer in Dodgers World Series history.
From the collection: Max Muncy fan-cave plaque →
Source: Historical record