About

One number from every match

JitsDex rates BJJ competitors from their match results. Win and your rating goes up; lose and it goes down. Beating someone rated above you counts for more.

Ranked after: 12
Against: 5
Uncertainty: ±110
Active: 18

What the number means

Everyone starts near 1500. A 200-point gap means the higher-rated athlete wins about 76% of the time; 400 points, about 91%. Beating someone you were expected to beat earns very little, so a pile of wins over beginners won’t make you elite.

Your whole history counts

Ratings are worked out from all results together, not one event at a time. If someone you beat goes on to beat the best, your old win is worth more. Your rating chart shows where you stood at each event, using only what was known then.

Getting ranked

New athletes show a ? and sit on the Provisional list until they have 12 rated matches against 5 different opponents and their uncertainty (the ±) is ±110 or less (kids ±115). Boards also ask for a few wins over strong opponents, so a short streak against weak brackets can’t top a board.

Active and all-time

Boards show athletes who competed in the last 18 months (since 2025-04-24). Ratings never fade: stop competing and you keep your number on the All-time board.

Who is rated with whom

Kids and adults are rated separately. All adults — men and women, Gi and No-Gi, every belt and weight — share one scale. Belt, weight and division are never used. The location filter only changes who is listed, never anyone’s rating. An athlete’s home province is where their gym is; if we don’t know the gym, it’s where they mostly compete.

Gyms

A gym’s rating is the average Rating of its best 5 ranked adults — the same 5 shown on the gym’s page. A gym needs 5 ranked adults to be rated; gyms with 3–4 are listed under “Not enough ranked athletes yet”. Kids gyms work the same way with ranked kids.

Results, win method and dates only, from events in Canada, the US and beyond in our data. Data as of 2026-10-24.