Cliff Lee will throw a side bullpen session Sunday when Philadelphia's pitchers throw to hitters for the first time in camp. Lee is nursing a minor abdominal injury. Although Lee has had abdominal injuries that have led to trips to the disabled list in the past, he shrugged off his current pain as "just a precautionary deal." "It's similar to the ab strains I've had in the past," Lee said. "Basically the early stages of that in the past I tried to power through it. I'm trying to be smarter with it now and keep it a small issue."