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Jonas Naumann

NEXUS Combat Club

W–L
2–1
Won and lost rating-eligible matches in the past 12 months.
Gi
-
Rating based on Gi matches in the past 12 months.
No-Gi
1,268
Rating based on No-Gi matches in the past 12 months.
Current form
2–1
Results from the ten most recent rating-eligible matches.
Opponents
3
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

3
Indexed competition matches
Date Opponent Result Event Division
2026-06-13 Alicem Cetinkaya
Loss
DÜSSELDORF OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP No-Gi · Male No-Gi (over 16 y.o.) / White / Youth No-Gi / -69,00 kg
2026-04-18 Matthijs Claessens
Win
2026 AGF Netherlands Championships No-Gi · No Gi Juveniles - Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
2026-04-18 Yahya Develioglu
Win
2026 AGF Netherlands Championships No-Gi · No Gi Juveniles - Adults / Male / Juvenile / White / Light Feather (Up to 65.80 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 +1 Rating 1,268

Rating-period composition

Rating matches
3 0
Record
2–1 Previous month 2–1
Opponents
3 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.

July 2026 No new matches Change 0 Rating 1,267

Rating-period composition

Rating matches
3 0
Record
2–1 Previous month 2–1
Opponents
3 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.

June 2026 1 new match Change -32 Rating 1,267

Rating-period composition

Rating matches
3 +1
Record
2–1 Previous month 2–0
Opponents
3 +1
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
June 13, 2026 Alicem Cetinkaya
DÜSSELDORF OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Male No-Gi (over 16 y.o.) / White / Youth No-Gi / -69,00 kg
Method Submission 03:45 2–10
Marginal influence -54
May 2026 No new matches Change 0 Rating 1,299

Rating-period composition

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

April 2026 2 new matches Change Starting point Rating 1,299

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.
Win
April 18, 2026 Matthijs Claessens
2026 AGF Netherlands Championships No Gi Juveniles - Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
Method Submission 01:18 6–0
Marginal influence +32
Win
April 18, 2026 Yahya Develioglu
2026 AGF Netherlands Championships No Gi Juveniles - Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
Method Submission 03:00 9–0
Marginal influence +49
Relevant matches
2.7
Official ranking percentile
-
Performance
-

2.7 weighted matches against 3 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,280
Repeated-opponent share
0.0%
Network connectivity
87.6%

Classification evidence

Why U18?

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

  • U18 4 event votes Selected outcome

Registrations and outcomes

LET´S ROLL HENNEF | EBI SUB-ONLY
U18 · Counts
Teens Boys No-Gi / Beginner / 16-17 years / -70 kg
  • Competition age 16
  • Registered age: u18
  • Source category: u18
COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Male No-Gi (over 16 y.o.) / White / Youth No-Gi / -69,00 kg
  • Competition age 16
2026 AGF Hamburg Summer Open
Does not count
Competition T-shirt / Adult Small
No Gi Juveniles / Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
  • Competition age 16
DÜSSELDORF OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U18 · Counts
Male Gi (over 16 y.o.) / White / Youth (16-17y.o.) / -69,00 kg
  • Competition age 16
Male No-Gi (over 16 y.o.) / White / Youth No-Gi / -69,00 kg
  • Competition age 16
RISING BJJ DÜSSELDORF 16.05.26
U18 · Counts
Youth // Male No Gi / White / Youth Male / 66 kg
  • Competition age 16
2026 AGF Netherlands Championships
U18 · Counts
No Gi Juveniles - Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
  • Competition age 16
  • Registered age: u18
  • Source category: u18

Classification evidence

Why ≤ 66 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

  • ≤ 66 kg 1 competition event Selected outcome
  • ≤ 69 kg 1 competition event

Registrations and outcomes

LET´S ROLL HENNEF | EBI SUB-ONLY
Does not count
Teens Boys No-Gi / Beginner / 16-17 years / -70 kg
  • Registered weight class: -70 kg
  • Source competition limit: -70 kg

No matches in the rating period · no valid weight evidence

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Male No-Gi (over 16 y.o.) / White / Youth No-Gi / -69,00 kg
  • Registered weight class: -69,00 kg
  • Source competition limit: -69,00 kg

No matches in the rating period · no valid weight evidence

2026 AGF Hamburg Summer Open
Does not count
Competition T-shirt / Adult Small

No matches in the rating period · no valid weight evidence

2026 AGF Hamburg Summer Open
Does not count
No Gi Juveniles / Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
  • Registered weight class: Light Feather (Up to 65.80 kg)
  • Source competition limit: Light Feather (Up to 65.80 kg)

No matches in the rating period · no valid weight evidence

DÜSSELDORF OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Male Gi (over 16 y.o.) / White / Youth (16-17y.o.) / -69,00 kg
  • Registered weight class: -69,00 kg
  • Source competition limit: -69,00 kg

No matches in the rating period · no valid weight evidence

DÜSSELDORF OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 69 kg · Counts as a competition event
Male No-Gi (over 16 y.o.) / White / Youth No-Gi / -69,00 kg
  • Registered weight class: -69,00 kg
  • Source competition limit: -69,00 kg

1 match in the rating period

RISING BJJ DÜSSELDORF 16.05.26
Does not count
Youth // Male No Gi / White / Youth Male / 66 kg
  • Registered weight class: 66 kg
  • Source competition limit: 66 kg

No matches in the rating period · no valid weight evidence

2026 AGF Netherlands Championships
≤ 66 kg · Counts as a competition event
No Gi Juveniles - Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
  • Registered weight class: Light Feather (Up to 65.80 kg)
  • Source competition limit: Light Feather (Up to 65.80 kg)

2 matches in the rating period

Classification evidence

Why White?

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

  • white 3 matches in the rating period Selected outcome

Registrations and outcomes

DÜSSELDORF OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
white · Counts as a match
Male No-Gi (over 16 y.o.) / White / Youth No-Gi / -69,00 kg
  • Source belt category: white

1 match in the rating period

2026 AGF Netherlands Championships
white · Counts as a match
No Gi Juveniles - Adults / Male / Juvenile / White / Light Feather (Up to 65.80 kg)
  • Source belt category: white

2 matches in the rating period