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WI

William J O'Brien

Black Belt

Associations

CT SUD Brazilian Jiu-Jitsu
CT SUD Brazilian Jiu-Jitsu
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Major Titles
Verified achievements recognized on the rankings.
  • 1x National Bronze Medalist Gi 2025 (Feather - 3rd)
  • 1x National Bronze Medalist Gi 2025 (Light - 3rd)
  • 1x National Bronze Medalist No-Gi 2025 (Light - 3rd)
  • 1x National Champion No-Gi 2025 (Light - 1st)
  • 1x National Silver Medalist No-Gi 2025 (Open Class - 2nd)
  • 1x National Bronze Medalist No-Gi 2025 (Open Class - 3rd)
Performance scorecardOverall 90
Performance Scorecard
Dynamic skill index based on verified matches and accomplishments.
90Overall Score
D
Performance Rank
Gi BJJ13
No-Gi / Submission Grappling77