Leon Bagniewski
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3 GoldJJWL 3Fighter Intelligence
6 TournamentsGet notified when Leon Bagniewski's rankings update
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Malegrey BeltAges 10-1129,089 FightersRanked #1958 of 29,089 grey belts. 85% win rate across 13 matches.
Fighter History
| Result | Method | Fighter | JITS | Academy | Bracket | Video | Tournament | Format | Date |
|---|---|---|---|---|---|---|---|---|---|
| W | PTS 4-0 | 1440+270 | Gracie Barra Roseville CA | Grey Pre Teen · 50-59 | JJWLGS XV Gi Youth | Gi | Jan 31, 2026 | ||
| W | SUB 4-0 | 1021+300 | Charles Gracie Academy | Grey Pre Teen · 50-59 | JJWLGS XV Gi Youth | Gi | Jan 31, 2026 | ||
| W | SUB 12-0 | 1013+350 | Guerrilla Jiu Jitsu Turlock | Grey Pre Teen · 50-59 | JJWLGS XV Gi Youth | Gi | Jan 31, 2026 | ||
| W | SUB 4-0 | 1021+410 | Charles Gracie Academy | Grey Pre Teen · 50-59 | JJWLGS XV NoGi Youth | Gi | Jan 31, 2026 | ||
| W | SUB 12-0 | 1013+430 | Guerrilla Jiu Jitsu Turlock | Grey Pre Teen · 50-59 | JJWLGS XV NoGi Youth | Gi | Jan 31, 2026 | ||
| W | PTS 4-0 | 1967+500 | Salinas Jiu Jitsu | Grey Pre Teen · 50-59 | JJWLGS XIII Gi Youth | Gi | May 17, 2025 | ||
| L | PTS 0-0 | 1147-740 | Ta Danado Jiu Jitsu | Grey Pre Teen · 50-59 | JJWLGS XIII Gi Youth | Gi | May 17, 2025 | ||
| W | PTS 2-0 | 1944+710 | Sama BJJ | Grey Pre Teen · 50-59 | Gi | Mar 22, 2025 | |||
| W | SUB 13-0 | 1010+920 | North Bay Jiu Jitsu | Grey Pre Teen · 50-59 | Gi | Mar 22, 2025 | |||
| W | PTS 2-0 | 1225+450 | Mat Marauders | Grey Pre Teen · 50-59 | Gi | Mar 22, 2025 |
From Marco Nascimento BJJ
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Stats verified from completed tournaments only, may not represent a fighter's true record.
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About
Leon Bagniewski is a Grey belt from Marco Nascimiento BJJ in San Mateo, CA with an and 3 gold medals across 4 tournaments. His 50% submission rate ranks in the top 6% of Grey belts—5 points above the 45% belt average—and his 80% win rate nearly doubles the 50% belt standard. At 3026 JITS rating, Bagniewski places #1214 in his belt tier and #2293 globally, positioning him in the 94th percentile among Grey belts.
All 8 of Bagniewski's wins came against higher-rated opponents, including an upset victory over Kcee Adams (−770 rating gap). His Development Velocity Index sits at +161.1 pts/month, placing him in the 89th percentile for competitive growth trajectory. Competing exclusively in gi format across JJWL events, Bagniewski has logged 10 matches with his strongest performances at GS XV Gi Youth (2 golds) and Pacific Cup VI Gi Youth (1 gold).