Jake Peavy threw a relaxed bullpen session Sunday morning, his first step back since suffering shoulder tendinitis. Peavy threw around 30 pitches, but didn't really let loose. Chicago pitching coach Don Cooper wasn't worried about the number of pitches thrown by Peavy, who was working from a mound for the first time in a week. "More importantly than anything else, he felt good today and we're going to untrack him from here," Cooper said. "He might throw another sideline in a day or two."