Silva, Diaz TKO by Failed Drug Test

Mike Schultz | Updated Oct 04, 2017


News broke on Tuesday from the UFC reporting that both Anderson Silva and Nick Diaz both failed drug tests after their UFC 183 fight in which Silva defeated Diaz in a unanimous decision at the MGM Grand Arena.

The UFC announced that Silva,39, tested positive for Drostanolone in a pre-fight drug test administered by the Nevada State Athletic Commission on January 9th. NSAC provided additional information, claiming to also have found traces of Androstane in Silva’s system.

This is the first time in Silva’s long and successful career spanning over 18 years and 40 fights that he has tested positive for a banned substance. It is likely that the Commission will suspend Silva until a more comprehensive hearing can be held in the future. A disciplinary hearing could be held in March or April at which the Commission could also decide to overturn Silva’s win over Diaz to a no-contest.

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While this looks bad for Silva, Diaz also tested positive for marijuana in his post-fight drug test. This latest offense marks the third marijuana related positive drug test for Diaz. Multiple offenses are sure to land Diaz in more trouble; especially considering the Commission recently raised the legal amounts of marijuana for athletes to be compliant and Diaz was still found to be over that limit.

The UFC confirmed that it had been notified about the failed tests in a statement. “UFC’s understanding is that further testing will be conducted by the Commission to confirm these preliminary results.”

Commission chairman Francisco Aguilar seemed to have no explanation for why results on Silva’s failed January 9th test sooner. Aguilar went as far as saying he would have had no issue cancelling the fight between Silva and Diaz if he were made aware of the test results.

The UFC has also stated it’s willingness to “fully respect” any suspension that the Commission hands down to both Silva and Diaz.