Youkilis will work out at Fenway on Monday during the team's off-day, and he could return to the lineup as early as Tuesday. But it all depends on his symptoms.
Manager Terry Francona also confirmed that Youkilis has the onset of a sports hernia, which might require a surgical procedure once the season is over.
"Saying that, it's kind of a general term, which means he has a weakening of an area, which we already knew," Francona said. "It's not really news. I think we're going to have to certainly check him out when the season's over to see what needs to be done -- if anything. For now, he'll play as tolerated. I think they believe he can play. If he needs us to give him a day off, we can certainly do that."
It has been a tough few weeks for Youkilis, who recently served a 15-day stint on the disabled list with lower back woes.
"He's been diving, falling -- he's been tender in so many areas," Francona said. "I think that's what a sports hernia is. Like a real hernia is like when something comes bulging out. This is a term that's used that I think has kind of got a life of its own. I'm glad they were diligent enough to look and it gives Youk a little bit of peace of mind. Again, when the season is over, I think you have an obligation to say, 'OK, where do we go from here?'"
With Youkilis out, the Red Sox again played Jed Lowrie at third and Marco Scutaro at short. Dustin Pedroia, who hit cleanup on Friday, moved back to the No. 2 spot in the batting order. David Ortiz hit fourth.