Gotta add Jonathin Meloan from the Dodgers, check out his strike out rates last year. another one could be Brian Akin in the dodgers organization. This next one is questionable and might be a stretch but id keep an eye on Dallas Buck from ARI. he didnt pitch last year due to injury, but if he can come back healthy the kid has what it takes. He'll need to get his velocity up but he has the make up.
also Jonah Nickerson, who did well last year i believe, showed the heart of a champ in the CWS. This is a guy who might be nothing more than a control pitcher down the line cause i dont know if he really has the stuff to be a dominant guy, but he could be another sleeper. if he can pick up a few mph, he has all the make up to become a top guy down the line