How Long Was The Longest 9 Inning Baseball Game?

How Long Was The Longest 9 Inning Baseball Game? Wednesday’s marathon at Progressive Field was the longest nine-inning game ever played, topping a four-hour, 45-minute epic between the Red Sox and Yankees (who else?) staged at Fenway Park on August 18, 2006. How long was the longest 9 inning game? It was the longest nine-inning