The positive momentum surrounding Jake Peavy's recovery from surgery hit a snag Sunday as the White Sox shut down the right-handed pitcher with what is believed to be rotator cuff tendinitis, according to an ESPN.com report. Peavy, who is on anti-inflammatories, will be reassessed Monday. If he's unable to make his scheduled start Thursday against the Cubs, it's doubtful he'll be on the opening day roster.