ARDMORE, Pa. (AP) -- Webb Simpson already played for an amateur championship at Merion. He's ready to win a major there on his next visit. Simpson is one of the few active PGA Tour members to play at the suburban Philadelphia course, competing at the 2005 U.S. Amateur. When he returns in June, Simpson has a grander goal in mind for his return visit than finishing 72: Simpson wants to defend his U.S. Open championship.