Since the series has shifted to St. Louis, both Boston Red Sox starters have lasted four innings. This has caused the Red Sox bullpen to see a lot of action over the past few days.
Boston's relievers have been key to their success this postseason as they have allowed just seven earned runs over 45.2 innings. That has allowed them to hold onto to leads as well as keep games close to enable comebacks such as the one in Game 2 of the ALCS.
Three Red Sox relievers have appeared in at least three World Series games thus far. In fact, the Red Sox have turned to Junichi Tazawa in all four games of the series and a total of 12 times in the postseason.
While Craig Breslow was lights out during the regular season and the first two rounds of the playoffs, he has struggled in the World Series. The Red Sox have called on him three times, and he has only managed to record one out while giving up three hits, two walks and two earned runs.
Based on how close the World Series games have been following Game 1, it seems likely that the bullpen will play a big role in Game 5. The lack of innings from the Red Sox starters in the past two games could come back to bite them.