MMA Fighting Share this story For those looking forward to Gordon Ryan making his MMA debut, it appears that won’t be happening anytime soon, if ever. Ryan recently signed a deal with ONE Championship to compete in grappling and MMA. The multi-time ADCC gold medalist, who earned his black belt under Garry Tonon—a 6-0 fighter under the ONE banner—has talked about competing in MMA for a few years now but hasn’t made the full-on switch. As he revealed to MMA Fighting, discussions with ONE Championship have been going on for several years and should he make the decision to fight, it will exclusively happen with ONE.