UFC fighter Jon Jones' B sample reportedly tested positive for a banned substance.
Brett Okamoto of ESPN.com reported the news Tuesday, noting the B sample was for Jones' failed drug test from July 28. According to Okamoto, the United States Anti-Doping Agency (USADA) in August told Jones he tested positive for the anabolic steroid Turinabol on July 28.
This comes after Ariel Helwani of MMA Fighting reported on Sept. 1 Jones passed a blood test in the immediate aftermath of UFC 214 on July 29. Helwani also noted Jones passed tests on July 6 and July 7, although his July 28 urine test came back positive.