Arron Oberholser pulled out of the World Cup on Monday with a recurring hand injury that will require surgery, and PGA Tour officials were searching for a replacement for the U.S. team. "I'm disappointed not to have the chance to represent my country, but I hope I'll have more chances in the future," he said. Oberholser was the highest-ranked American to accept a spot in the Omega Mission Hills World Cup, to be played Nov. 22-25 in China, and he selected Sean O'Hair as his partner.