The one thing Westbrook has going for him is that the NFL has placed such an emphasis on preventing concussions, so he faces less of a likelihood of getting a hit to the head. The two concussions he suffered in a 3 week span make him prone to future concussions, if he suffers one this year he's probably done for the season, and I hope he calls it a career. Aside from concussions, Westbrook has always had injury problems. Granted we're talking about him finishing out 4 or 5 games, so it's not an impossibility that he'll finish, but if I were a Westbrook owner I'd probably stash Dixon on my bench.