ONE on TNT debuts live on April 7 feat. return of Demetrious Johnson and Eddie Alvarez Share this story Photo by Dennis Jerome Acosta/Pacific Press/LightRocket via Getty Images ONE Championship will bring its unique brand of mixed martial arts (MMA) to stateside audiences beginning April 7, directly following AEW wrestling, with “ONE on TNT” featuring the return of former UFC champions Demetrious Johnson and Eddie Alvarez. Johnson (30-3-1) will challenge Adriano Moraes (18-3) for the promotion's flyweight strap in the live ONE on TNT headliner. “Mighty Mouse” has not competed since Oct. 2019 thanks to the coronavirus pandemic that shut down global operations.