Where he stands
Demetrious Johnson is 6-1 across 7 fights on our tape. Our rating has him at 1661 — it moves with every result and weights who he beat, so a win over a ranked opponent counts for far more than one over a debutant. A record on its own says very little in this sport — two fighters at 12-3 can have faced completely different opposition, which is exactly the gap the rating is built to close.
He wants the fight on the mat
Demetrious lands 3.5 takedowns per 15 minutes and threatens 0.7 submissions in the same span. That's the profile the model reads first, because grappling decides where a fight happens and where it happens decides most of the rest. His matchups turn on one number more than any other — the opponent's takedown defense. Against 85%-plus defense the same fighter looks ordinary; against a striker who can't stop it he looks unbeatable.
Age matters more here than in most sports
Demetrious is 40. MMA decline tends to arrive suddenly rather than gradually — durability goes before output does, so a fighter can look sharp on the stats right up until he doesn't. The model factors age in, and it's one of the places we'd trust the number least on any individual fight.
How the model reads him
Demetrious's rating updates after every result and weights the quality of the opponent. Against a specific opponent it becomes a win probability, adjusted for the stylistic matchup — striking output against absorption, takedown rate against takedown defense — plus age and layoff. The weighting is ours; the output is published on the fight board and graded.
What we'd flag
The tape starts in 2015 and covers UFC and Contender Series only, so career records elsewhere aren't reflected. Beyond that: MMA has the highest single-event variance of anything we model, and no rating survives contact with a flush shot.