Beanie Wells had arthroscopic surgery on his right knee after he was injured in the team's final preseason game, which was kept secret until Friday. Cardinals coach Ken Whisenhunt confirmed Friday that Wells had surgery but said it was not a serious procedure and there was no reason to believe the running back would be out more than on a week-to-week basis. Wells told reporters that the surgery was performed to repair a torn meniscus. The issue was raised after a reporter from CBSSports.com noticed incision marks on Wells' knee.