Angels manager Mike Scioscia has admitted that Vladimir Guerrero's return from a torn chest muscle "could take a while." The team has had difficulty putting a date on Guerrero's return to the field. "Right now he's at risk even swinging the bat," Scioscia said. "This is a significant injury he has. It doesn't look like surgery was needed, but it should get to a point where the doctor is going to feel comfortable that he'll swing the bat before he's able to throw. "And when that day comes, he'll be in our lineup."