Unbelievably, it was first done by Maik Belle of East Germany at the 1987 European championships.
Click PLAY or watch it on Gymnastike.
The only other gymnast I’ve seen compete it was Olympic Silver medalist Jon Horton at Blackjack Invitational in Las Vegas. (Or was it at the Winter Cup Skills Competition?)
Click PLAY or watch it on YouTube.
Gymnastics Coaching.com 