Anderson Silva and Nick Diaz After more than a half-year in limbo, ex-UFC middleweight champion Anderson Silva and onetime welterweight title challenger Nick Diaz finally will go before the Nevada State Athletic Commission. NSAC Executive Director Bob Bennett today confirmed to MMAjunkie that the fighters are scheduled for their respective hearings during the commission’s Aug. 13 meeting in Las Vegas. Silva (34-6 MMA, 17-2 UFC), who outpointed Diaz (26-10 MMA, 7-7 UFC)) in the headliner of January’s UFC 183 at MGM Grand Garden Arena in Las Vegas, tested positive for multiple banned substances, failing pre- and post-fight drug tests . Diaz flunked his third post-fight test for marijuana . The fighters, who were temporarily suspended in February, face longer formal suspensions, fines and attorney’s fees, while Silva could have his win overturned