Skip to main content
Mateusz Szczecinski fixes your shotgun armbar from k-guard | @marekhealth 🔥

Mateusz Szczecinski fixes your shotgun armbar from k-guard | @marekhealth 🔥

From FloGrappling

August 6, 2026

Mentioned in this video

People (1)

Mateusz Szczeciński Poland flag

Mateusz Szczeciński

×8 ×5
Trains at Academia Gorila Koszalin

Published by

FloGrappling

More from FloGrappling

View all

Report an Issue

Found outdated information, a broken link, or incorrect data? Let us know and we'll fix it.

0 characters (minimum 10)

We'll use this to follow up if needed

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gyms, belts and nationalities are pieced together from public and community sources, so some of it is incomplete, outdated, or flat-out wrong.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.