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Black Belt Practitioners

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Jakub Wiklacz Poland flag

Jakub Wiklacz

Trains at Czerwony Smok
Matilda Reid

Matilda Reid Australia flag

Trains at Kumite Jiu Jitsu
Chris Brennan

Chris Brennan United States flag

Nyjah Easton

Nyjah Easton United States flag

Yuji Arai

Yuji Arai Japan flag

Jeff Curran

Jeff Curran United States flag

Marcos Avellan

Marcos Avellan United States flag

Mraz Avdoyan

Mraz Avdoyan Germany flag

Roman Dolidze

Roman Dolidze Georgia flag

Shayna Baszler

Shayna Baszler United States flag

Dan Schon

Dan Schon Mexico flag

Rosi Sexton

Rosi Sexton United Kingdom flag

Sanshiro Nakakura

Sanshiro Nakakura Japan flag

Tom Lawlor United States flag

Tom Lawlor

Eric Dahlberg

Eric Dahlberg United States flag

David Bielkheden

David Bielkheden Sweden flag

Yuki Sasaki

Yuki Sasaki Japan flag

Misha Cirkunov

Misha Cirkunov Canada flag

Denis Kang

Denis Kang Canada flag

Soa Palalei

Soa Palalei Australia flag

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It's a mess, I know.

My goal is to build the most comprehensive BJJ encyclopedia anywhere — but good, accurate data is genuinely hard to come by. Records, gyms, belts and nationalities are pieced together from public and community sources, so some of it is incomplete, outdated, or flat-out wrong.

That's where you come in. If you spot something off, tell me and I'll fix it — every correction makes this better for everyone. This website wouldn't be possible without the community.