QUOTE (TaylorStSox @ May 22, 2013 -> 09:18 PM)
Fastball/change is the same delivery. That slider puts that torque on the arm. He doesn't want to throw it. Elbow.
He almost certainly screwballs his changeup like a lot of guys do, considering its movement, but yeah. If something is hurting, probably elbow. If just general exertion is the issue, then he might be happy to just let off the gas on his changeups and achieve the desired effect