He hasn't been healthy in many years. He's coming to a couple of age-related realizations: 1. You can never get back to where you were physically at age 25 2. Just because you have a bunch of seemingly random injuries doesn't mean they are random. His body is breaking down and he has a high-maintenance game. He isn't one of those guys that can hang around for years like Miguel Angel Jiminez or El Pato or Kenny Perry with their simple, natural swings.