"He called this morning and kept enough food down where he felt strong enough and felt good enough where he's ready to go," manager Terry Francona said.
Youkilis went 2-for-4 with an RBI in his last outing, an 8-0 win over Chicago on Friday. On the year, he's batting .318 with 24 home runs and 94 RBIs.
Mark Remme is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.