Despite being retired Chael Sonnen has failed two drug tests in recent months, the results of the second test being made public just now by the NSAC. Sonnen failed a test administered in February, testing positive for banned substances Clomiphene and Anastrozole. He claimed that he was using those drugs to help him get off his TRT regime, and there seemed to be some credibility to that since those drugs are used in such a capacity. But Sonnen was actually issued a second test later on, before he was formally taken-off the UFC 175 card. Sonnen's second test showed both HGH and EPO, strictly performance enhancers. Sonnen joins the repeat offenders club along with the likes of Josh Barnett and Stephan Bonnar. Should be interesting going forward to see how the UFC utilizes him.