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Gatame Online

Kosen Judo groundwork, evaluated and ranked.

Learn Kosen Judo.
Submit videos. Get ranked.

Why Gatame Online?

Independent Criteria

Ranked under Gatame's own criteria, built specifically for Kosen Judo groundwork.

Anywhere Evaluation

Independent from dojo affiliation or location.

Kosen Judo Ranking

A ranking framework based on the structure of Kosen Judo groundwork.

Gatame Kosen Judo
Black Belt System
Black Belt System image

A ranking system dedicated to Kosen Judo groundwork.

Clear levels, clear progression, starting from Sankyu.

Earn recognition through rank, not just experience.

Active Challengers: 21
See Black Belt System

Qualified Dojo

From Shodan onward, you are qualified to teach Kosen Judo.

Qualified Dojo

Practitioners ranked Shodan or higher in the Gatame Kosen Judo Black Belt System gain the qualification to teach Kosen Judo groundwork and operate or join a Gatame Qualified Dojo.

Qualification begins with the Black Belt System.

Learn About Qualified Dojo

How the Gatame
Ranking Works

  1. Submit your groundwork
  2. get evaluated against set criteria
  3. move up the ranks.

Kosen Judo
Technique Video

Kosen Judo technique video

Technical resources for Kosen Judo groundwork. Used to prepare for evaluations and rank progression. Study the positions, structures, and transitions required.

Access to these resources is included with the Annual Membership.

Explore Video Library

About Us

Joichi Hirao

Joichi Hirao

  • 5th Dan Kodokan Judo
  • Coaching experience with the Canadian National Judo Team (training partner)
  • Coaching experience at Club de Judo Shidokan and Club de Judo Gatamé
  • Competitive achievements: European Open Lisbon 2014 — Gold Medalist

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AND Activity

FAQ

Q. Is this an official Kodokan black belt?
No. This is Gatame's independent ranking system focused on Kosen Judo groundwork.
Q. Do I need to belong to a dojo?
No. You can submit your groundwork videos from anywhere.
Q. Do I need to start from Sankyu?
Yes, the system starts at Sankyu and progresses through clear levels.
Q. What kind of videos do I submit?
You submit videos demonstrating the required groundwork positions, structures, and transitions for your level.
Q. What happens if I don't pass an evaluation?
You'll receive feedback and can resubmit after improving the required points.
See FAQ
See Black Belt System