Who was the pitching coach for the Cubs in 1998? No way in hell would I allow a pitcher to take the mound with those mechanics. Oscar Acosta, with whom Kerry was very close by all accounts. Acosta wasn't afraid to get in Kerry's face and give him straight info. I have no doubt Acosta let Wood know about the risks in throwing his big hook. I'll give you the benefit of the doubt and assume you're not one of the many pitching mechanics "experts" that came out of the woodwork since 2003. Would YOU have ordered Kerry to stop throwing his slurve after he struck out 20 in his 5th major league start? Good luck with that one. At the time no one could say with certainty what damage (if any) he was doing with his motion. In 1999 Kerry freely admitted his slurve was a big factor in his injury. My point is, you never can tell. Put ten pitching coaches together in the same room and you'll get ten different opinions on good pitching mechanics - it's notoriusly subjective. Did Bob Gibson have great mechanics? How bout Warren Spahn - would you have let him take the mound? Just by watching that YouTube video of Kerry Wood striking out 20 batters you could see all of his flaws in his motion. Throwing across his body, really poor weight transfer, rushing throughout his delivery, not keeping his head lined up with his belly button, lifting his elbow above his shoulder are a few flaws I seen just by watching that video. When he rushes his movement towards home plate, his arm is trying to keep up with his body. That puts alot of stress on the shoulder and elbow region.