Henderson: Belfort was abusing, obviously doing more than TRT in our last fight

When Dan Henderson and Vitor Belfort step into the Octagon this Saturday in Sao Paulo, Brazil, not only will it be a rubber match between two experienced Pride and UFC veterans, but also of two former participants of the now-banned testosterone-replacement therapy. When both men met the last time in 2013, they both used the advantages of the infamous TRT program.

But Henderson, who never failed drug tests during his long UFC stint, isn't so sure that legal testosterone shots were the only thing helping Belfort perform the way he did, when he got knocked out with a head kick from the Brazilian "Phenom" in the first round.

"By the looks of it, yeah, obviously he was doing more than just TRT," Henderson said during media day on Thursday. "He was abusing something. Obviously, we won't know for sure unless somebody comes out and says they know, but I have no idea. I can only speculate."

Belfort tested positive for elevated testosterone levels after their first fight in 2006, in Pride FC's first and only event in the United States. Their second fight took place in Brazil, and there is no actual evidence that Belfort took any performance-enhancing substance besides his TRT medication. Although after Belfort's controversial, three-year-old pre-UFC 152 drug test just became public, you never know, says "Hendo".

"A lot of times the truth tends to come out eventually, like Lance Armstrong," he said. "He's also tested positive for steroids in the past, and since he's tested for TRT and other things too -- I think that if you look at the picture of both of us when we fought then, and a picture of both of us now, I mean, a picture says a lot. Obviously, he was doing a lot more than I was, my body hasn't changed at all. I was barely doing any TRT, and I wasn't abusing anything."

Henderson and Belfort will headline UFC Fight Night 77 at the Ginasio do Ibirapuera in Sao Paulo, Brazil, this Saturday.