Nick Diaz tested positive for drug at UFC 143
Nick Diaz tested positive for marijuana at UFC 143, Nevada Athletic Commission executive director Keith Kizer said in a statement:
"The following athletes were tested: Nick Diaz, Carlos Condit, Fabricio Werdum, Josh Koscheck, Renan Barao, Ed Herman, Dustin Poirier, Max Hollaway, Matt Riddle, Henry Martinez, Edwin Figueroa, Alex Caceres, Matt Brown, Chris Cope, Rafael Natal, Michael Kuiper, Stephen Thompson and Dan Stittgen. All results received thus far have been negative, except Mr. Diaz tested positive for marijuana metabolites. A complaint for disciplinary action against Mr. Diaz has been filed."
This is Diaz's second positive test. He first tested positive in 2007 for marijuana when he fought Takanori Gomi at Pride 33, also in Las Vegas. Diaz's submission win over Gomi was overturned because of the positive test.
Had Diaz won his interim welterweight title fight against Carlos Condit at UFC 143 this past weekend, that victory would have been overturned as well.
Diaz might have suspected the test would come back positive, and that might have been his reason for not accepting a rematch with Condit.