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Ranks & Achievements
Purple BeltVerified
Brazilian Jiu-JitsuLineage
Carlos Gracie Jr trained under his father Carlos Gracie Sr.
Rigan Machado trained under Carlos Gracie Jr lineage.
Bill Hosken — under Rigan Machado. Now Coral Belt.
RKRobert K KoskiThis memberPurple BeltBrazilian Jiu-Jitsu
Share your passport
Your belt, school, and lineage on one shareable credential.
PassportRK
RKRobert K Koski
Purple Belt
Lineage
Carlos Gracie SrCarlos Gracie JrRigan MachadoBill HoskenRobert K Koski
Related Profiles
PassportRK
RKRobert K Koski
Purple Belt
Lineage
Carlos Gracie SrCarlos Gracie JrRigan MachadoBill HoskenRobert K Koski