Former UFC champ Demetrious Johnson suffers submission defeat after epic run at IBJJF World Masters Championships
Demetrious Johnson recently competed at the IBJJF Masters World Championships, making his debut appearance as a black belt. Having secured gold at the IBJFF World Championships as a brown belt, the MMA fighter was hoping to secure back-to-back gold medals. After winning his first three matches, ‘Mighty Mouse’ faced off against Tomoya Yanagisawa in his…