You can blame his play on his ex-wife, but I still think it's the fear of re-injuring his surgically repaired knee, there so important in golf, if you notice he's not driving the ball like he did before the operation, and that was the best part of his game.
8) He's still driving about as long but there are young bucks out there now that blow it 25-30 yards past him. Also, driving has never been the best part of his game.