Chael Sonnen fails drug test, pulled from UFC 175 in Las Vegas

File this one under "disaster."

Ultimate Fighting Championship (UFC) middleweight and part-time light heavyweight Chael Sonnen has failed a random drug test and as a result, has been pulled from his upcoming fight at the UFC 175 pay-per-view (PPV) event on July 5, 2014, in Las Vegas, Nevada.

ESPN.com brought word of the change on Tuesday.

The test was administered by Nevada State Athletic Commission (NSAC) last month when "The American Gangster" was in town for his UFC 175 press conference, and returned traces of Anastrozole and Clomiphene. The former is used to treat early stages of breast cancer, according to the report, while the latter is often prescribed in cases of female infertility.

Sonnen is expected to issue a statement later today and will not appeal the findings.

What is particularly troubling about Sonnen's slip-up is that he now becomes the third fighter assigned to the "Weidman vs. Machida" mixed martial arts (MMA) event to run afoul of NSAC. Vitor Belfort failed his surprise drug test back in February (more on that here) while Wanderlei Silva chose to flee the premises instead of handing over a cup of Brazilian lemonade.

It should be noted that Sonnen also failed a post-fight drug test following his loss to Anderson Silva at UFC 117.

Sonnen was forced to give up testosterone replacement therapy (TRT) earlier this year after Belfort's run-in with the commission caused a statewide ban (details). The FOX Sports analyst initially considered hanging up the gloves, but reconsidered after embarking on a new training regimen without the controversial treatment.

Where he goes from here, remains to be seen.