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Fritz Staerke

Fennec Jiu Jitsu

W–L
4–7
Won and lost rating-eligible matches in the past 12 months.
Gi
1,256
Rating based on Gi matches in the past 12 months.
No-Gi
1,192
Rating based on No-Gi matches in the past 12 months.
Current form
4–6
Results from the ten most recent rating-eligible matches.
Opponents
10
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
0
Silver
4
Bronze
2
Total medals
6
Events with results
4

Full career record

Wins
9
Losses
11
Matches
20
Win rate
45.0%

Ways of winning

Submission
5
Points
1
Decision
2
Disqualification
0

Personal records

Longest winning streak
4
Longest submission streak
2

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
10
Distinct events
3

Ways of winning

  • Submission 2 50%
  • Points 0 0%
  • Decision 2 50%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1256
Record
3–4
Win rate
43%
Submission share
67%

No-Gi

Rating
1192
Record
1–3
Win rate
25%
Submission share
0%

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
1,301
Change over 90 days
-40
Highest rating in 12 months
1,338
Performance versus expectation
-3.8 pp
Schedule strength
Top 25%
Average opponent rating
1,364
Weighted win rate
38%
Expected win rate
42%
Repeat-opponent share
9%
Effective evidence
8.5
Confidence
89/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 1–4 1–4 across 5 rematches against 2 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #439 Muhammed Soyturk · BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Dec 0–0
  2. #463 Tim Libuda · Fennec BJJ Kids Cup Gi & NoGi Dec 0–0

Full career

  1. #439 Muhammed Soyturk · BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Dec 0–0
  2. #463 Tim Libuda · Fennec BJJ Kids Cup Gi & NoGi Dec 0–0
  3. #632 Henry Daiber Tran · Fennec BJJ KIDS CUP Vol. 7 Gi and NoGi Sub 00:32 0–4
  4. #1265 Joe Wiering · Fennec BJJ KIDS CUP Vol. 7 Gi and NoGi Pts 9–0

Rivals

Opponent Head-to-head record Matches
Colin Schulze 0–2 2

Around this athlete

Athlete Rank Rating
Mohammad Chlon #900 1,301
Fritz Staerke #901 1,301
Berzan Ardic #902 1,301

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 +3 Rating 1,301

Rating-period composition

Rating matches
11 0
Record
4–7 Previous month 4–7
Opponents
10 0
Events
3 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 1,298

Rating-period composition

Rating matches
11 0
Record
4–7 Previous month 4–7
Opponents
10 0
Events
3 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 0 Rating 1,298

Rating-period composition

Rating matches
11 0
Record
4–7 Previous month 4–7
Opponents
10 0
Events
3 0

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

May 2026 4 new matches Change -21 Rating 1,298

Rating-period composition

Rating matches
11 +4
Record
4–7 Previous month 3–4
Opponents
10 +4
Events
3 +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
May 23, 2026 Abdullah Soyturk
BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -38 kg
Method Submission 01:14 0–5
Marginal influence -7
Win
May 23, 2026 Muhammed Soyturk
BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -38 kg
Method Decision 03:00 0–0
Marginal influence +12
Loss
BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Points 03:00 2–8
Marginal influence -21
Loss
BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Points 03:00 0–5
Marginal influence -16
April 2026 2 new matches Change +18 Rating 1,319

Rating-period composition

Rating matches
7 +2
Record
3–4 Previous month 2–3
Opponents
6 +2
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
April 11, 2026 Henry Daiber Tran
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Boys Gi (under 16 y.o.) / Grey / 10-11 years / -46 kg
Method Submission 02:53 0–0
Marginal influence -14
Win
April 11, 2026 Maximilian Derksen
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Boys Gi (under 16 y.o.) / Grey / 10-11 years / -46 kg
Method Submission 00:26 4–0
Marginal influence +17
March 2026 No new matches · 6 left period Change -34 Rating 1,301

Rating-period composition

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

6 older matches left the 12-month period: 4 won and 2 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 +3 Rating 1,335

Rating-period composition

Rating matches
11 0
Record
6–5 Previous month 6–5
Opponents
9 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 -2 Rating 1,332

Rating-period composition

Rating matches
11 0
Record
6–5 Previous month 6–5
Opponents
9 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 -4 Rating 1,334

Rating-period composition

Rating matches
11 0
Record
6–5 Previous month 6–5
Opponents
9 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 5 new matches Change +3 Rating 1,338

Rating-period composition

Rating matches
11 +5
Record
6–5 Previous month 4–2
Opponents
9 +4
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 Colin Schulze
Fennec BJJ Kids Cup Gi & NoGi Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Points 03:00 2–4
Marginal influence -7
Loss
November 22, 2025 Colin Schulze
Fennec BJJ Kids Cup Gi & NoGi Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Points 03:00 0–2
Marginal influence -7
Win
November 22, 2025 Tim Libuda
Fennec BJJ Kids Cup Gi & NoGi Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Decision 03:00 0–0
Marginal influence +25
Win
November 22, 2025 Jonas Bittermann
Fennec BJJ Kids Cup Gi & NoGi Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Submission 01:57 0–0
Marginal influence +17
Loss
November 22, 2025 Richard Finn Gemmecker
Fennec BJJ Kids Cup Gi & NoGi Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Points 03:00 0–6
Marginal influence -6
October 2025 No new matches Change -2 Rating 1,335

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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 0 Rating 1,337

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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
8.5
Official ranking percentile
Top 61%
Performance
3.8 pp below expectation

8.5 weighted matches against 10 different opponents across 3 events

Weighted win rate
37.7%
Expected win rate
41.5%
Average opponent rating
1,364
Repeated-opponent share
9.1%
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 2 event votes Selected outcome

Registrations and outcomes

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U14 · Counts
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -38 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
U14 · Counts
Boys No-Gi (under 16 y.o.) / White / 10-11 years / -42 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -46 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Fennec BJJ Kids Cup Gi & NoGi
Does not count
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 34 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

  • ≤ 34 kg 1 competition event Selected outcome
  • ≤ 38 kg 1 competition event
  • ≤ 46 kg 1 competition event

Registrations and outcomes

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 38 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -38 kg
  • Registered weight class: -38 kg
  • Source competition limit: -38 kg

2 matches in the rating period

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 38 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Registered weight class: -38 kg
  • Source competition limit: -38 kg

2 matches in the rating period

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
Does not count
Boys No-Gi (under 16 y.o.) / White / 10-11 years / -42 kg
  • Registered weight class: -42 kg
  • Source competition limit: -42 kg

No matches in the rating period · no valid weight evidence

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
≤ 46 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -46 kg
  • Registered weight class: -46 kg
  • Source competition limit: -46 kg

2 matches in the rating period

Fennec BJJ Kids Cup Gi & NoGi
≤ 34 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

2 matches in the rating period

Fennec BJJ Kids Cup Gi & NoGi
≤ 34 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

3 matches in the rating period

Classification evidence

Why Grey?

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

  • grey 9 matches in the rating period Selected outcome
  • yellow 2 matches in the rating period

Registrations and outcomes

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
grey · Counts as a match
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -38 kg
  • Source belt category: grey

2 matches in the rating period

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
yellow · Counts as a match
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Source belt category: yellow

2 matches in the rating period

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
grey · Counts as a match
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -46 kg
  • Source belt category: grey

2 matches in the rating period

Fennec BJJ Kids Cup Gi & NoGi
grey · Counts as a match
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Source belt category: grey

2 matches in the rating period

Fennec BJJ Kids Cup Gi & NoGi
grey · Counts as a match
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Source belt category: grey

3 matches in the rating period