Under The Knife 5/11/22

Fatigue is The Arm Killer

Pitch counts shouldn’t be used at the major league level, but they are. Even the biomechanical tools in place, as they are in terms of accuracy, are barely usable for the purpose most would like - detecting changes in the arm slot and action of a pitcher.

But all of these are proxies for fatigue and in baseball, there’s not even an agreement on what that…