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Gustav Gruß

Fennec Jiu Jitsu

W–L
4–4
Won and lost rating-eligible matches in the past 12 months.
Gi
1,314
Rating based on Gi matches in the past 12 months.
No-Gi
1,162
Rating based on No-Gi matches in the past 12 months.
Current form
4–4
Results from the ten most recent rating-eligible matches.
Opponents
5
Unique opponents faced in rating-eligible matches in the past 12 months.

Scheduled

  1. Fennec BJJ Kids Cup 10

    Germany

    Boys Gi (under 16 y.o.) / Orange / 12-13 years / -50 kg Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -50 kg
    Unconfirmed

Tournament history

Events

13
Events
Date Event Result Format Division
BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Germany · Gi · U16 · yellow/orange · ≤55 kg ; No-Gi · U16 · orange · ≤50 kg 1–2 W–L: Win / Loss GiNo-Gi
  • Boys Gi (under 16 y.o.) / Yellow / Orange / 12-13 years / -55 kg
  • Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -50 kg
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Germany · Gi · U16 · yellow · ≤45 kg ; No-Gi · U16 · yellow · ≤45 kg 1–3 W–L: Win / Loss GiNo-Gi
  • Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Boys No-Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
Fennec BJJ Kids Cup Gi & NoGi Germany · Gi · U16 · yellow · ≤42 kg ; No-Gi · U16 · yellow · ≤42 kg 3–1 W–L: Win / Loss GiNo-Gi
  • Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Fennec BJJ KIDS CUP Vol. 7 Gi and NoGi Germany · Gi · U16 · yellow · ≤42 kg 0–3 W–L: Win / Loss Gi Boys Gi (under 16 y.o.) / Yellow / 9-10 years / -42 kg
Fennec BJJ Kids Cup Vol. 6 Germany · Gi · 10 yo · yellow/orange · ≤36 kg ; No-Gi · 10 yo · yellow/orange · ≤36 kg 2–3 W–L: Win / Loss GiNo-Gi
  • Boys Gi / Junior I (9/10yrs) / Yellow/Orange / -36,00 kg
  • Boys NoGi / Junior I (9/10yrs) / Yellow/Orange / -36,00 kg
GERMAN NATIONAL OPEN CHAMPIONSHIP 2024 Germany · Gi · U16 · yellow · ≤38 kg ; No-Gi · U16 · yellow · ≤38 kg 0–5 W–L: Win / Loss GiNo-Gi
  • Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Place #4
Fennec BJJ Kids Cup Vol.5 Germany · Gi · 10 yo · yellow/orange · ≤33 kg ; No-Gi · 10 yo · yellow/orange · ≤33 kg 4–0 W–L: Win / Loss GiNo-Gi
  • Boys Gi / Junior I (9/10yrs) / Yellow/Orange (bzw. 1 bis 3 Jahre Training) / -33,00 kg
  • Boys NoGi / Junior I (9/10yrs) / Yellow/Orange (bzw. 1 bis 3 Jahre Training) / -33,00 kg
Doso Kids Cup - The Combatch Games Germany · Gi · U10 · grey · ≤30 kg 3–1 W–L: Win / Loss Gi
  • Girls & Boys (under 10) / Grey / Junior 1 (8/9yrs) / - 30 kg
Fennec BJJ Kids Cup Vol. 4 Germany · Gi · 10 yo · white/grey · ≤30 kg 4–0 W–L: Win / Loss Gi
  • Boys Gi / Junior I (9/10yrs) / White/Grey (bzw. bis 1 Jahr Training) / -30,00 kg
Doso Kids Cup Germany · Gi · U10 · grey · ≤30 kg 3–1 W–L: Win / Loss Gi
  • Girls & Boys (under 10) / Grey / Junior 1 (8/9yrs) / - 30 kg
Fennec BJJ Kids Cup Vol. 3 Germany · Gi · 8 yo · white/grey · ≤30 kg 2–1 W–L: Win / Loss Gi
  • Boys Gi / Pee Wee (7/8 yrs) / White/Grey (bzw. bis 1 Jahr Training) / -30,00 kg
Fennec BJJ Kids Cup Vol. 2 Germany · Gi · 8 yo · white/grey · ≤30 kg 2–0 W–L: Win / Loss Gi
  • Boys Gi / Pee Wee (7/8 yrs) / White/Grey (bzw. bis 1 Jahr Training) / -30,00 kg
Fennec BJJ Kids Cup Germany · Gi · 8 yo · white/grey · ≤27 kg 1–1 W–L: Win / Loss Gi
  • Boys Gi / Pee Wee (7/8 yrs) / White/Grey (bzw. bis 1 Jahr Training) / -27 kg

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 -4 Rating 1,314

Rating-period composition

Rating matches
8 0
Record
4–4 Previous month 4–4
Opponents
5 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 1,318

Rating-period composition

Rating matches
8 0
Record
4–4 Previous month 4–4
Opponents
5 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 -1 Rating 1,318

Rating-period composition

Rating matches
8 0
Record
4–4 Previous month 4–4
Opponents
5 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 2 new matches Change -29 Rating 1,319

Rating-period composition

Rating matches
8 +2
Record
4–4 Previous month 4–2
Opponents
5 +1
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 Fynn Quilitz
BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -50 kg
Method Points 04:00 2–10
Marginal influence -27
Loss
May 23, 2026 Fynn Quilitz
BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Yellow / Orange / 12-13 years / -55 kg
Method Points 04:00 0–2
Marginal influence -9
April 2026 2 new matches Change +4 Rating 1,348

Rating-period composition

Rating matches
6 +2
Record
4–2 Previous month 3–1
Opponents
4 +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 Béla Steinkretzer
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Boys No-Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
Method Points 04:00 0–9
Marginal influence -20
Win
April 11, 2026 Alexis Alfano
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
Method Points 04:00 2–0
Marginal influence +22
March 2026 No new matches Change +1 Rating 1,344

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

February 2026 No new matches Change -1 Rating 1,343

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

January 2026 No new matches Change 0 Rating 1,344

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

December 2025 No new matches Change +3 Rating 1,344

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

November 2025 4 new matches · 5 left period Change +51 Rating 1,341

Rating-period composition

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

5 older matches left the 12-month period: 2 won and 3 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

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 Martin Silin
Fennec BJJ Kids Cup Gi & NoGi Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Submission 02:55 7–2
Marginal influence -25
Win
November 22, 2025 Thore Hoffmann
Fennec BJJ Kids Cup Gi & NoGi Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Submission 00:11 0–0
Marginal influence +8
Win
November 22, 2025 Martin Silin
Fennec BJJ Kids Cup Gi & NoGi Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Points 03:00 5–0
Marginal influence +30
Win
November 22, 2025 Thore Hoffmann
Fennec BJJ Kids Cup Gi & NoGi Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Submission 00:18 0–0
Marginal influence +21
October 2025 No new matches Change -1 Rating 1,290

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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.

September 2025 No new matches Change 0 Rating 1,291

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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.

Relevant matches
7.4
Official ranking percentile
Top 56%
Performance
1.5 pp below expectation

7.4 weighted matches against 5 different opponents across 3 events

Weighted win rate
47.1%
Expected win rate
48.7%
Average opponent rating
1,330
Repeated-opponent share
37.5%
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.) / Orange / 12-13 years / -50 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Boys Gi (under 16 y.o.) / Yellow / Orange / 12-13 years / -55 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
U14 · Counts
Boys No-Gi (under 16 y.o.) / Yellow / 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
Fennec BJJ Kids Cup Gi & NoGi
Does not count
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 42 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

  • ≤ 42 kg 1 competition event Selected outcome
  • ≤ 45 kg 1 competition event

Registrations and outcomes

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 50 kg · Does not count
Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -50 kg
  • Registered weight class: -50 kg
  • Source competition limit: -50 kg

1 match in the rating period · conflicting upper weight limits make this event ambiguous

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 55 kg · Does not count
Boys Gi (under 16 y.o.) / Yellow / Orange / 12-13 years / -55 kg
  • Registered weight class: -55 kg
  • Source competition limit: -55 kg

1 match in the rating period · conflicting upper weight limits make this event ambiguous

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
≤ 45 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

1 match in the rating period

Fennec BJJ Kids Cup Vol. 9 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

1 match in the rating period

Fennec BJJ Kids Cup Gi & NoGi
≤ 42 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Registered weight class: -42 kg
  • Source competition limit: -42 kg

2 matches in the rating period

Fennec BJJ Kids Cup Gi & NoGi
≤ 42 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Registered weight class: -42 kg
  • Source competition limit: -42 kg

2 matches in the rating period

Classification evidence

Why Yellow?

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

  • yellow 7 matches in the rating period Selected outcome
  • orange 1 match in the rating period

Registrations and outcomes

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
orange · Counts as a match
Boys No-Gi (under 16 y.o.) / Orange / 12-13 years / -50 kg
  • Source belt category: orange

1 match in the rating period

BERLIN OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
yellow · Counts as a match
Boys Gi (under 16 y.o.) / Yellow / Orange / 12-13 years / -55 kg
  • Source belt category: yellow

1 match in the rating period

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
yellow · Counts as a match
Boys No-Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Source belt category: yellow

1 match in the rating period

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
yellow · Counts as a match
Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Source belt category: yellow

1 match in the rating period

Fennec BJJ Kids Cup Gi & NoGi
yellow · Counts as a match
Boys No-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 Gi & NoGi
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