Peavy has been dealing with back spasms since last Thursday, when he had to be scratched from a start at Texas. Peavy tried to play catch on Saturday, but felt a grabbing sensation when he tossed the ball. The plan was for Peavy to receive more treatment on Sunday. He has been working with a chiropractor and massage therapist.
Robert Falkoff is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.