I have one too. He also was a waiver wire pickup from previous versions of OOTP. His name is Juan Carlos Medina,
When I picked him up his potential was --stuff 2(2), movement 3(3), control 1(2)-- out of the 5 scale. Somewhat promising but not all that. My scout was not too high on him but the OOTP scout loved him. I kept him for a year in my lowest minors and included him as a throw in on a trade to the Houston Texans.
Well, he went on to star for the Texans for 15 years. Winning the best pitcher award 7 times (I have a really big league and awards are hard to come by) and making 15 straight all star teams. His potential and actual ratings topped out at --stuff 4(4), movement 5(5), control 5(5)--.
I guess I can say I should not have thrown him into that trade