A computer? You lost me. I'm saying that Prior is having a rough go of it because of these reasons He's young and since he hasn't ever played a full season, he's missed a lot of development time. Aside from all the time he's missed, the actual injuries have to have had a detrimental effect on his stuff, at least somewhat, considering he's injured his leg, his achilles, his shoulder and his elbow. These are actual, real reasons that you can point the finger at and say "Hey, this stuff actually happened and are actual reasons that players actually do worse than we may want/expect". Saying that "he isn't tough enough" or "he isn't mentally strong enough" or "he doesn't have enough composure" is just a guess. You can actually point to the injuries and the missed time, those are real. The rest are just stupid assumpions, and I'm sure you know what happens when you assume. When Prior went through his first real, bad injury in 2003 (shoulder) he came back and dominated. Not just pitched well, but dominated. I'd say that takes some mental toughness.