Ferguson tested positive for the steroid nandrolone, as well as elevated testosterone-to-epitestosterone ratio. Shamrock two-upped the former street fighter by registering for nandrolone, methadone and elevated testosterone-to-epitestosterone ratio.
Ferguson’s testosterone-to-epitestosterone ratio 6.4:1. The 52-year-old Shamrock nearly doubled that with a 12.4:1 ratio. The World Anti-Doping Agency limit is 4:1.
Ferguson and Shamrock have 10 days to file to have their B sample tested, if they choose. Both are facing at least yearlong suspensions.
It was reported 10 days ago that the heavyweights had flunked their pre-fight drug tests, which were administered by the Texas Department of Licensing and Regulation, who sanctioned the February 19 event inside Toyota Center in Houston.