coco had kidney stones, which is why he wasn't running.
Coco Crisp, CF BOS
News: The mysterious ailment that put Coco Crisp's rehab on hold for the last week was a bad case of kidney stones. According to the Boston Globe, the center fielder, already on the disabled list with a broken knuckle at the base of his left index finger, has been at his Boston-area home or in the hospital for the better part of a week.
Analysis: Terry Francona, who has cited privacy laws in refusing to speak in detail about Crisp's health, does not yet know when Crisp will be able to resume baseball activities, though that should come any day now. Francona views it as a positive that Crisp's finger has had an additional week of healing. But the Sox leadoff hitter has done little cardiovascular work and still has not swung a bat since April 8. "When he gets on the field, there's going to be some rough edges," Francona said. "We can lay all the plans out we want. But he's kind of limited."