The B sample of UFC light heavyweight champion Jon Jones's failed drug test from July 28 in Anaheim has confirmed the presence of a banned substance.
Multiple sources informed ESPN of the development on Tuesday. Last month, the United States Anti-Doping Agency (USADA) informed Jones he'd tested positive for Turinabol, an anabolic steroid, on July 28. Jones has been notified of the B sample's confirmation, per sources.
Jones (23-1), who reclaimed his UFC title by knocking out Daniel Cormier at UFC 214, has denied knowingly taking a banned substance. His team is currently investigating how the steroid entered his system.