It was that motorcycle accident he had with the Giants. He lost his fastball after that but I didn't expect him to completely fall off a cliff. Letting him go when they did was one of the smarter things the Giants have done in years because they knew he was done.
The Giants staff was so loaded back during their WS runs when they had MadBum, the kid from Dazed and Confused and Romo in their prime and several others Cain, Hudson, etc