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

Matches/Mar 1, 2019

Jason Butcher vs Robert Yamashita

Fight 2 Win 103

versus

WinnerRobert Yamashita

Match result

SubmissionArmbar

Winner: Robert Yamashita
Method: Armbar
Stage: Not recorded
Weight class: Featherweight

Event context

Jason Butcher vs Robert Yamashita | Jiu-Jitsu Reference

Date: March 1, 2019
Location: Houston, Texas
Organization: Fight 2 Win Promotions
Division: Featherweight