Willingham then made a costly gaffe in the eighth, as he attempted to catch a deep line drive hit by Dustin Pedroia, but it went off his wrist and over the fence for a two-run homer.
"He's been fighting it a little bit," Twins manager Ron Gardenhire said. "He was pretty fired up last night and you don't see that too often. So just take a break."
Doumit was given the day off after catching in Saturday's slugfest that lasted three hours and 53 minutes. He was also involved in a collision at home plate with Red Sox catcher Ryan Lavarnway in the sixth inning.
"He played a four-hour baseball game and had a collision at home plate, so he was really beat up after the game," Gardenhire said. "So I think that's the best thing for him just to back off and give him a little bit of a break."
With Doumit out, Joe Mauer started behind the plate for the first time since missing Friday's game with back stiffness. Mauer started at designated hitter on Saturday and went 2-for-5 to extend his season-long hit streak to 15 games, but went 0-for-4 with three strikeouts on Sunday to end the streak.
Rhett Bollinger is a reporter for MLB.com. Read his blog, Bollinger Beat, and follow him on Twitter @RhettBollinger. This story was not subject to the approval of Major League Baseball or its clubs.