Tigers manager Jim Leyland said before Saturday's game the Tigers could be getting back to full strength soon. With center fielder Austin Jackson (mild abdominal strain) and closer Jose Valverde (back strain) out, the Tigers have had to look to others to fill their roles. Jackson has missed the last three games, Valverde the last four. "Valverde is day-to-day, but he is going to throw (Sunday) and see how he feels. If he feels great, he may be available (Sunday)," Leyland said. "I doubt that. I think it'll be Tuesday in Cleveland. He's a gamer; he's a tough guy. If he throws and tells me he's ready, he may go (Sunday)." Leyland, meanwhile, said Jackson is improving but he doesn't want to take any chances with trying to bring him back too early.