Analytics preferences

Allow privacy-masked PostHog analytics and session replay so we can see which parts of the reference are useful and where people get stuck. We never send searches, route identifiers, or form contents. Vercel's anonymous traffic and performance measurement remains active either way.

jiu-jitsu reference

Athletes Events Organizations Matches Knowledge Graph About Support

jiu-jitsu reference

© 2026 Jiu Jitsu Reference. All rights reserved.

Apple, the Apple logo, and App Store are trademarks of Apple Inc., registered in the U.S. and other countries.

Privacy Terms Support

Sotaro Yamada vs Yoichi Fukumoto ("Yo") | Jiu-Jitsu Reference

Matches/Nov 30, 2019

Sotaro Yamada vs Yoichi Fukumoto ("Yo")

Quintet Fight Night 4: Asian Jiu Jitsu Wars

WinnerSotaro Yamada

versus

Yoichi Fukumoto ("Yo")“Yo”

Match result

SubmissionAnkle Lock

Winner: Sotaro Yamada
Method: Ankle Lock
Stage: Not recorded
Weight class: lightweight

Event context

Date: November 30, 2019
Location: Akita City, Japan
Organization: Quintet
Division: lightweight