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DE

Willi Birkigt

Grizzly Gym SBK

W–L
0–4
Won and lost rating-eligible matches in the past 12 months.
Gi
1,120
Rating based on Gi matches in the past 12 months.
No-Gi
1,109
Rating based on No-Gi matches in the past 12 months.
Current form
0–4
Results from the ten most recent rating-eligible matches.
Opponents
3
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
0
Silver
2
Bronze
2
Total medals
4
Events with results
3

Full career record

Wins
5
Losses
7
Matches
12
Win rate
41.7%

Ways of winning

Submission
4
Points
0
Decision
0
Disqualification
0

Personal records

Longest winning streak
2
Longest submission streak
2

Recent recorded placements

  1. Fennec BJJ Kids Cup Gi & NoGi

    DE Event record 0–4

    • Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -45 kg
    • Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg

  3. Fennec BJJ Kids Cup Vol. 4

    DE Event record 3–2

    • Boys Gi / Junior I (9/10yrs) / White/Grey (bzw. bis 1 Jahr Training) / -39,00 kg

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
3
Distinct events
1

Ways of winning

  • Submission 0
  • Points 0
  • Decision 0
  • Other recorded result 0

Gi versus No-Gi

Gi

Rating
1120
Record
0–2
Win rate
0%
Submission share
-

No-Gi

Rating
1109
Record
0–2
Win rate
0%
Submission share
-

Win quality

Grouped by pre-match win probability. This provides context and does not award an extra rating bonus.

As underdog 0–0 Less than 35% expected win probability before the match.
Even match 0–0 Between 35% and 65% expected win probability before the match.
As favourite 0–0 More than 65% expected win probability before the match.

Development

Rating and development

The same published rating, supported by trend, opponent strength and evidence quality.

Current rating
1,202
Change over 90 days
-18
Highest rating in 12 months
1,234
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,395
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
25%
Effective evidence
3.4
Confidence
54/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 3–3 3–3 across 6 rematches against 3 repeat opponents.
Most-faced opponent Fuga Sakai 1–1 · 2 matches

Top 10 highest-ranked defeated opponents

Past 12 months

No win over a currently ranked opponent in this period.

Full career

  1. #783 Fuga Sakai · Fennec BJJ Kids Cup Vol. 4 Sub 01:14 3–2

Rivals

Opponent Head-to-head record Matches
Fuga Sakai 1–1 2
Fynn Quilitz 0–2 2
Karl Weide 2–0 2

Recent tournaments

Calculation details

Rating breakdown for the past 12 months

See the published month-end rating and the rating-eligible matches added in each month. Open a month for details.

August 2026 No new matches Change 0 Rating 1,202

Rating-period composition

Rating matches
4 0
Record
0–4 Previous month 0–4
Opponents
3 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

July 2026 No new matches Change 0 Rating 1,202

Rating-period composition

Rating matches
4 0
Record
0–4 Previous month 0–4
Opponents
3 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

June 2026 No new matches Change -2 Rating 1,202

Rating-period composition

Rating matches
4 0
Record
0–4 Previous month 0–4
Opponents
3 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

May 2026 No new matches Change +8 Rating 1,204

Rating-period composition

Rating matches
4 0
Record
0–4 Previous month 0–4
Opponents
3 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

April 2026 No new matches Change +4 Rating 1,196

Rating-period composition

Rating matches
4 0
Record
0–4 Previous month 0–4
Opponents
3 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

March 2026 No new matches · 2 left period Change -26 Rating 1,192

Rating-period composition

Rating matches
4 -2
Record
0–4 Previous month 1–5
Opponents
3 -2
Events
1 -1

2 older matches left the 12-month period: 1 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

February 2026 No new matches Change +2 Rating 1,218

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

January 2026 No new matches Change -1 Rating 1,216

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

December 2025 No new matches Change +1 Rating 1,217

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 0
Events
2 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

November 2025 4 new matches Change -18 Rating 1,216

Rating-period composition

Rating matches
6 +4
Record
1–5 Previous month 1–1
Opponents
5 +3
Events
2 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Loss
November 22, 2025 L. Valtis
Fennec BJJ Kids Cup Gi & NoGi Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -45 kg
Method Submission 01:19 0–2
Marginal influence -17
Loss
November 22, 2025 Fynn Quilitz
Fennec BJJ Kids Cup Gi & NoGi Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -45 kg
Method Points 04:00 2–8
Marginal influence -14
Loss
November 22, 2025 Fynn Quilitz
Fennec BJJ Kids Cup Gi & NoGi Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
Method Submission 03:46 5–2
Marginal influence -9
Loss
November 22, 2025 Unknown User
Fennec BJJ Kids Cup Gi & NoGi Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
Method Submission 01:16 0–7
Marginal influence -9
October 2025 No new matches Change -1 Rating 1,234

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
Opponents
2 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

September 2025 No new matches Change +1 Rating 1,235

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
Opponents
2 0
Events
1 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

Relevant matches
3.4
Official ranking percentile
-
Performance
-

3.4 weighted matches against 3 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,395
Repeated-opponent share
25.0%
Network connectivity
87.6%

Classification evidence

Why U14?

Within the published period from 2025-09-01 through 2026-08-31, only competition ages recorded at events in the calculation year determine this outcome, with at most one vote per event. Without such an age, the most recent unambiguous earlier competition age is projected to the calculation year; bracket evidence is the final fallback. The newest evidence breaks a tie.

Evidence outcome

  • U14 1 event vote Selected outcome

Registrations and outcomes

Fennec BJJ Kids Cup Gi & NoGi
U14 · Counts
Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -45 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14

Classification evidence

Why ≤ 45 kg?

This outcome uses at most one unambiguous upper weight limit per completed ranking event from 2025-09-01 through 2026-08-31. Only the three most recent eligible events are considered, and the lightest verified upper limit is selected. A higher division is not treated as measured body weight.

Evidence outcome

  • ≤ 45 kg 1 competition event Selected outcome

Registrations and outcomes

Fennec BJJ Kids Cup Gi & NoGi
≤ 45 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period

Fennec BJJ Kids Cup Gi & NoGi
≤ 45 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period

Classification evidence

Why Orange?

This outcome uses the belt category of every rating-eligible match from 2025-09-01 through 2026-08-31. The most-fought category is selected; the newest evidence breaks a tie.

Evidence outcome

  • orange 2 matches in the rating period Selected outcome
  • yellow 2 matches in the rating period

Registrations and outcomes

Fennec BJJ Kids Cup Gi & NoGi
orange · Counts as a match
Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -45 kg
  • Source belt category: orange

2 matches in the rating period

Fennec BJJ Kids Cup Gi & NoGi
yellow · Counts as a match
Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Source belt category: yellow

2 matches in the rating period