Anderson Silva and Stephan Bonnar square off prior to their UFC 153 showdown in Brazil.

Stephan Bonnar Fails UFC 153 Drug Test; Tests Positive For Steroids

UFC light-heavyweight Stephan Bonnar was set up for a potential Rocky moment when he stepped up on short notice at UFC 153 in Brazil to save the card and take on the best fighter of all-time, UFC middleweight champion Anderson Silva, in the main event on short notice.

Unfortunately, there is now a stain on Bonnar’s legacy and his courage to take the fight has taken a backseat in the minds o fight fans thanks to the news of a failed drug test following UFC 153.


Bonnar tested positive for Drostanolone, an anabolic steroid, while Herman’s screen was flagged for marijuana metabolites.

With the lack of an athletic commission to govern the event, UFC officials took the role of overseeing the fight card. A suspension to the fighters is expected sometime next week.

Bonnar earlier this week announced his retirement.

UFC heavyweight Dave Herman also failed his drug test after testing positive for marijuana.

Both Bonnar and Herman lost their respective fights. Bonnar was knocked down with a shot to the body before Silva threw a flurry of punches as the ref stopped the fight. Herman was submitted by mixed martial arts legend Antonio Rodrigo Nogueira.

Unfortunately for both fighters, this isn’t the first time they have been popped for the illegal substances.

Herman was scratched from a planned 2011 fight with Mike Russow after failing a pre-fight drug screening administered by the Texas Department of Licensing and Regulation. Marijuana was the drug that cost Herman the scheduled fight.

For Bonnar, he tested positive for a Boldenone metabolite that resulted from anabolic-steroid use.

Tags: MMA Stephan Bonnar UFC UFC 153

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