UFC heavyweight and coach of this upcoming season of The Ultimate Fighter (TUF) Roy Nelson just tweeted a photo of himself after a swim practice with Nick Diaz, Nate Diaz and Gilbert Melendez. Says Nelson, "Now I'm ready for my first triathlon." If there was any doubt that the Cesar Gracie team would be participating with Nelson to help coach this upcoming season of The Ultimate Fighter, I think this picture puts that to rest. By the way, judging from the photo, how crazy is it that the Diaz brothers fight in different weight classes?