“That’s a big f*cking dude!” ONE flyweight champion Demetrious Johnson realized he may have bit off more than he could chew as he approached the mats. Michael Sante Medina, a 6-foot-3, 248-pound BJJ heavyweight champion, stood in position waiting for “Mighty Mouse’s” arrival for the open-weight tournament at the 2024 Pan IBJJF Championships. Johnson, who stands at 5-foot-3, weighed in at 155 pounds for the event