Dude came out of nowhere as far as I'm concerned. I first saw him skate at the Van Doren Invitational, doing easily some of the best pool skating that I've ever seen. He was airing WAY higher out of the pool than anyone else that day, including Curren Caples, who has been known to blast off rocket ship-style This video is just a taste:
Congrats Greyson. I look forward to losing my mind watching footage of you in the future. In case anyone needs proof, here's my source.