+1 to riggs
I bowled with Rick in a pro-am a while back and he was a great guy, him and Steve Wilson (who I also bowled with on the same occasion) were 2 of the nicest people I have ever met. Back when Rick first came out he had so much power it was stupid... because of injuries he had to tone down his game a lot, but has always been silky smooth and his release is amazing. I would also agree that he is one of the biggest "what if" cases of all time!