The Red Sox will turn to left-hander Eduardo Rodriguez to start Game 4 of the World Series at Dodger Stadium on Saturday.
Nathan Eovaldi had been scheduled to start, but he was called in to pitch six-plus innings of relief as Friday's Game 3 stretched to 18 innings before the Dodgers won 3-2 on Max Muncy's walk-off homer.
Rodriguez pitched one-third of an inning in Game 3, coming on for starter Rick Porcello with two outs in the fifth inning and striking out Joc Pederson on six pitches.