BOSTON -- Jake Peavy will start Game 3 of the World Series for the Boston Red Sox.

Red Sox manager John Farrell confirmed before Game 2 on Thursday night that he is flipping Peavy and Clay Buchholz. Farrell said Buchholz, who has an undisclosed ailment, could use an extra day of rest.

Buchholz gave up five runs in eight innings and two runs in five innings in his AL championship series starts against Detroit. Peavy gave up seven runs in three innings in his only ALCS start. Asked before the World Series opener against the Cardinals whether Buchholz had an injury, Farrell said, "Not to the point of keeping him out of starting."