The agent of top NFL prospect Da'Quan Bowers disputed reports his client's surgically repaired knee is not progressing and has caused him to delay his pro day workout in an email to media outlets including ESPN.com on Thursday. Bowers, a defensive end from Clemson who led the nation with 15½ sacks in 2010, is expected to be a top choice in next month's draft. He had arthroscopic knee surgery in January.