ST. LOUIS (AP) Tiger Woods says he is back to chipping and putting and may try to play before the U.S. Open. He spoke in a teleconference yesterday at Bellerive Country Club to promote the BMW Championship in September. It will be Woods' firsttournament in St. Louis. Woods had arthroscopic surgery April 15th and says his rehab is going well. He says he doesn't believe he has a chronic condition with his left knee and isn't worried about his health.