Following a UFC 120 preliminary card loss to Rob Broughton, Brazilian heavyweight Vinicius Quieroz (5-2 MMA, 0-1 UFC) tested positive for the banned substance Stanozolol.
MMAjunkie.com today confirmed the finding with the UFC's Vice President of Regulatory Affairs, Marc Ratner.
UFC 120 took place Oct. 16 in London, England. Without a regulatory body in place to oversee the event, the UFC acted as its own regulatory body for the event.
Main event fighters Michael Bisping and Yoshihiro Akiyama were both screened, as were six fighters selected on a random basis. Quieroz was the only fighter to test positive.
According to the UFC's U.K. president, Marshall Zelaznik, Quieroz forfeited an undisclosed discretionary bonus from the UFC and has also been released from the promotion. The UFC will also relay the findings to the Nevada State Athletic Commission, which could affect Quieroz's ability to gain a license to fight in the U.S.
Ratner said that the UFC is concerned with the use of performance-enhancing drugs in MMA and will continue to police its fighters at events that lack an overseeing commission.
"The UFC enforces the same rules and regulations as the Nevada State Athletic Commission and takes this responsibility to the fighters and the sport very seriously," Ratner said.
Stanozolol, which is often sold under the brand name Winstrol, is a synthetic anabolic steroid derived from testosterone that is usually prescribed to treat anaemia and hereditary angioedema in humans, though it's also available for veterinary uses. The drug is popular in the bodybuilding world, though MMA fighters such as Phil Baroni, Chris Leben, Kimo Leopoldo and Tim Sylvia have tested positive for it in the past.
A 6-foot-7 Chute Boxe product, Quieroz struck an imposing figure over Broughton at UFC 120. The Brazilian came out throwing heavy leather, though Broughton weathered the early storm.
With "Spartan" visibly fatigued, Broughton changed the flow of the fight in a gutsy performance and eventually locked in a fight-ending rear-naked choke in the third round.
The loss came in Quieroz's UFC debut and snapped a four-fight win streak.
Source: http://mmajunkie.com/news/21245/viniciu ... 0-loss.mma