Two UFC 153 main card fighters have tested positive for banned substances.
Bonnar tested positive for Drostanolone, an anabolic steroid used mainly in the "cutting cycles." Herman tested positive for marijuana metabolites.
Bonnar came out of retirement to face Anderson Silva in the main event of UFC 153. It was a favor to the promotion that made him a star and the kind of fight he had been begging Joe Silva to make. By most accounts, it was the biggest fight of his career and put him back in the public eye.
This is the second time in his UFC career that he has tested positive for a steroid. The first time was after the second Forrest Griffin fight when he tested positive for Boldenone.
This is also the second offense for Dave Herman. He tested positive for marijuana metabolites prior to his scheduled bout at UFC 136. That positive test forced him from the card.
Bonnar announced earlier this week that he will be retiring once more from MMA. After this positive test, one would expect this retirement to be permanent.
Without question, this positive test tarnishes his legacy. Even with the first positive test, I still believed that Bonnar had a place in the UFC Hall of Fame because of his first fight with Griffin. This test all but ensures that he won't get into the Hall.
As for Herman? This is the straw that breaks the camel's back. He's 1-3 in the UFC and the headache just doesn't seem to be worth it.