Youkilis suffered a left triceps contusion on the play. X-rays were negative. Manager Terry Francona did not express concern about the health of the American League Gold Glove Award-winning first baseman.
"He's OK," Francona said. "He got hit in that funny bone, and at the time, he didn't feel real good. Just checking with him now, he's OK."
He was 0-for-2 in the ballgame prior to leaving, one night after recording a career-high six RBIs in a 12-1 victory over the O's. Youkilis left Sunday's outing with the Sox up 2-0. Jed Lowrie took Youkilis' place at third base.
Youkilis, the regular first baseman for the Sox, started Saturday's game at third base in order to give Mike Lowell a day off in the field. Lowell was the starting designated hitter on Sunday.
Mark Remme is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.