"We'll see," manager Bob Melvin said late Monday night. "It's probably 50-50 for tomorrow now. He was a little bit sore today. Whether it was sore from the running he did yesterday, not sure. It will be a late decision tomorrow. I wasn't going to use him at all tonight."
Cespedes injured the hamstring in Thursday's game in Houston, and the injury was immediately deemed a mild one. The A's still don't believe he'll need to go on the disabled list.
They're 2-3 this year in games Cespedes doesn't start, compared to 14-7 when he does.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.