Demetrious “Mighty Mouse” Johnson is no stranger to elite competition, but his latest competition on the Jiu-Jitsu mats didn’t go his way.

The former UFC champion competed at the 2025 IBJJF Pan Championship, entering the Master 2 black belt featherweight division…
Where he suffered a narrow first-round loss by points.

Johnson’s transition from MMA to Jiu-Jitsu has been impressive.
He initially made waves as a brown belt, winning a world title at Master 2 and proving he could hold his own in this new chapter of his life.

He was promoted to black belt less than a year ago, and the step up in difficulty has been clear.
While brown belt matches pit him against athletes with several years of training, black belt opponents often bring decades of experience.

This tournament marked his second attempt at black belt gold, but he ran into tough opposition in his very first match.
He was eliminated by Leon Amancio, who continued his run all the way to the final before settling for silver.

It was a tough break, but Johnson has made it clear he’s in Jiu-Jitsu for the long haul.
Competing is no longer about legacy – it’s about passion.

Watch the match on the video below: