William Siebert

Stasis

4–1
Record
75%
Submission rate
1y 5m
Career
3:45
Avg match
1.5
Avg place

Brazilian Jiu-Jitsu competitor. 5 matches across 2 events since May 2025, from Smoothcomp results.

Provisional rating · 7 more matches to get ranked

Rating over time Rating 1438+53

Jun 14, 2025·+53 · 2–0·2025 Barrie Open Jiu Jitsu Invitational

L10 W W L W W
2-win streak
Top 3 best wins
OpponentTheir rating
  • 1
    Nathan Garrity 2025 Ontario Open International Jiu Jitsu Championship - GI Edition · May 2025
    1291
  • 2
    Kevin Marteja 2025 Barrie Open Jiu Jitsu Invitational · Jun 2025
    1202
  • 3
    Howie Ambi 2025 Ontario Open International Jiu Jitsu Championship - GI Edition · May 2025
    1177

Opponents & match history

5 matches

Newest first, grouped by tournament. Each tournament shows its rating change and the wins we expected; tournaments rated together are one entry.

2025 Barrie Open Jiu Jitsu InvitationalJun 14, 2025 · expected 1.6 wins 2–0+53 rating
W
Kevin MartejaChamps Academy Canada
submission0:55
W
Kevin MartejaChamps Academy Canada
submission3:04
Full event results →
2025 Ontario Open International Jiu Jitsu Championship - GI EditionMay 4, 2025 · expected 1.7 wins 2–1first rating
L
Jordan HowseToronto Top Team
points5:00
W
Howie AmbiLeslieville Jiu Jitsu
submission4:47
W
Nathan GarrityNew Union BJJ
points5:00
Full event results →

William Siebert is a Brazilian Jiu-Jitsu competitor out of Stasis. JitsDex holds 5 matches across 2 events, going back to May 2025 — a 4–1 record compiled from Smoothcomp tournament results. JitsDex rates William Siebert 1438 (provisional: not yet ranked on a board).

2 events · 5 matches · 1 gold · first event on record May 2025 · jitsdex.com

Rating 1438 · skill 1666 ± 136 · quality wins 0/8 · data as of 2026-10-24

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