Nate Diaz is not suspended by USADA
“I’m not gonna play their game and try and hide it or keep quiet, as they suggested.”

Nate Diaz tested positive for trace amounts of a selective androgen receptor modulator (SARM) but he has not been provisionally suspended by USADA. Similarly, in May welterweight Neil Magny tested positive for low levels of a SARM, and announced the news himself on his social network. In September USADA cleared Magny to fight, as the amounts were so low, and because Magny was believed to have taken a tainted supplement.
USADA no longer announces adverse test results, and the New York State Athletic Commission was unaware of Diaz’s result until the fighter himself made it public:
I’m not gonna make it out to NYC for fight week next week because they say I tested with elevated levels that they say might be from some tainted supplements. I call false on that cause I only take Whole Food or natural food supplements. I don’t even eat meat. So until UFC, Usada or whoever is F***ing with me fixes it, I won’t be competing. I’m not gonna play their game and try and hide it or keep quiet, as they suggested. I’m not gonna have my name as tainted as a cheater like these other motherf***ers who keep quiet until after the fight just so they can get paid. f***in cheaters. I don’t give a f*** about some money over my dignity and my legacy. I’m not playing along with this bulls***. I’m not staying quiet and figuring it out after the fight. That’s cheating. So fight game I’ll see you when I see you. Sincerely, The releast baddest mother f***er in the game.”
There had been reports the Leon Edwards was available to step in for Diaz, but he’s not.
https://twitter.com/Leon_edwardsmma/status/1187675704382636034
As of now, whether or not the fight takes place remains fluid.
h/t ESPN



