Former UFC light heavyweight champ Forrest Griffin is one of the most popular fighters on the organization’s roster and a major reason MMA has grown into the global entity it is today. However, he’s also guilty of failing a drug test the public was never informed about…until today.

According to Griffin, he tested positive for Xanax after his infamous scrap with Anderson Silva at UFC 101. In the bout, Silva famously played with Griffin for three-and-a-half minutes before putting him him away with strikes in one of the most lopsided fights of either man’s career.

“I failed my drug test I think for Xanax,” Griffin admitted earlier today on The MMA Hour. “I had a doctor’s prescription (but) I did it the night before (the fight). I was nervous and I couldn’t sleep.”

Some might argue Griffin caught some shuteye during the match-up with Silva too, landing 3 out of 43 strikes he threw which made for such a silly affair Silva dropped his hands and taunted Griffin to hit him.  As far his reason for keeping things quiet over the past few years, Griffin asked, “What’s the point? Why add humiliation to a bad situation?”

While Griffin makes a valid point about why he didn’t say anything, the question is still why didn’t anyone else bring the issue to light, especially considering the Ultimate Fighter original went on to fight Tito Ortiz three months later.