TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
BE

Gorkem Coban

Aorta Team

W–L
4–9
Won and lost rating-eligible matches in the past 12 months.
Gi
1,130
Rating based on Gi matches in the past 12 months.
No-Gi
1,211
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
11
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
0
Silver
3
Bronze
1
Total medals
4
Events with results
4

Full career record

Wins
4
Losses
9
Matches
13
Win rate
30.8%

Ways of winning

Submission
3
Points
1
Decision
0
Disqualification
0

Personal records

Longest winning streak
2
Longest submission streak
1

Recent recorded placements

  1. 2026 AGF Antwerp Championships

    BE Event record 2–2

    • No Gi Kids Challenger / Boys / White Challenger / Light I (Up to 43.10 kg)
    • No Gi Kids / Boys / Juniors (12 - 13 yrs) / White / Light I (Up to 43.10 kg)

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
11
Distinct events
4

Ways of winning

  • Submission 3 75%
  • Points 1 25%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1130
Record
1–4
Win rate
20%
Submission share
100%

No-Gi

Rating
1211
Record
3–5
Win rate
38%
Submission share
67%

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
1,247
Change over 90 days
+39
Highest rating in 12 months
1,248
Performance versus expectation
-12.2 pp
Schedule strength
Top 82%
Average opponent rating
1,273
Weighted win rate
33%
Expected win rate
45%
Repeat-opponent share
15%
Effective evidence
9.2
Confidence
91/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 0–4 0–4 across 4 rematches against 2 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1491 Mete Simsek · 2026 AGF Antwerp Championships Sub 02:09 12–3

Full career

  1. #1491 Mete Simsek · 2026 AGF Antwerp Championships Sub 02:09 12–3

Rivals

Opponent Head-to-head record Matches
Nolan Kint 0–2 2

Around this athlete

Athlete Rank Rating
Jade Brasdefer #1121 1,247
Gorkem Coban #1122 1,247
Ali El Bouroumi #1123 1,247

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 1,247

Rating-period composition

Rating matches
13 0
Record
4–9 Previous month 4–9
Opponents
11 0
Events
4 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 -1 Rating 1,247

Rating-period composition

Rating matches
13 0
Record
4–9 Previous month 4–9
Opponents
11 0
Events
4 0

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

June 2026 4 new matches Change +34 Rating 1,248

Rating-period composition

Rating matches
13 +4
Record
4–9 Previous month 2–7
Opponents
11 +3
Events
4 +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.
Win
June 13, 2026 Amin Isayev
2026 AGF Antwerp Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / White / Light I (Up to 43.10 kg)
Method Points 03:00 3–2
Marginal influence +17
Loss
June 13, 2026 Nolan Kint
2026 AGF Antwerp Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / White / Light I (Up to 43.10 kg)
Method Points 03:00 4–7
Marginal influence -6
Loss
June 13, 2026 Nolan Kint
2026 AGF Antwerp Championships No Gi Kids Challenger / Boys / White Challenger / Light I (Up to 43.10 kg)
Method Submission 01:40 2–2
Marginal influence -6
Win
June 13, 2026 Mete Simsek
2026 AGF Antwerp Championships No Gi Kids Challenger / Boys / White Challenger / Light I (Up to 43.10 kg)
Method Submission 02:09 12–3
Marginal influence +9
May 2026 2 new matches Change +6 Rating 1,214

Rating-period composition

Rating matches
9 +2
Record
2–7 Previous month 2–5
Opponents
8 +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
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -43kg (cat 2 : 12-13-14-15)
Method Submission 02:53 2–2
Marginal influence -7
Loss
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -43kg (cat 2 : 12-13-14-15)
Method Submission 01:05 0–0
Marginal influence -7
April 2026 No new matches Change -1 Rating 1,208

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
Opponents
7 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.

March 2026 5 new matches Change +99 Rating 1,209

Rating-period composition

Rating matches
7 +5
Record
2–5 Previous month 0–2
Opponents
7 +5
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
March 14, 2026 Mohamed Najdaoui
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -38kg (cat 2 :10-11-12-13)
Method Points 04:00 0–6
Marginal influence -14
Win
March 14, 2026 Juul Ottoy
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -38kg (cat 2 :10-11-12-13)
Method Submission 00:47 2–0
Marginal influence +9
Loss
March 14, 2026 Mansur Inalkayev
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -38kg (cat 2 :10-11-12-13)
Method Submission 00:24 0–4
Marginal influence -9
Win
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -38kg (cat 2 : 10-11-12-13)
Method Submission 00:20 0–0
Marginal influence +19
Loss
March 14, 2026 Naim Bouaziz
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -38kg (cat 2 : 10-11-12-13)
Method Submission 01:18 0–2
Marginal influence -18
February 2026 No new matches Change -3 Rating 1,110

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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 -1 Rating 1,113

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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 0 Rating 1,114

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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 No new matches Change -1 Rating 1,114

Rating-period composition

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

October 2025 2 new matches Change Starting point Rating 1,115

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
October 18, 2025 Souhayb Fellah
INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10 Boys Youth Gi / White & Grey / 13-15 / -44kg
Method Submission 03:25 0–15
Marginal influence -15
Loss
October 18, 2025 Moadh Harrar
INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10 Boys Youth Gi / White & Grey / 13-15 / -44kg
Method Submission 02:03 0–2
Marginal influence -11
Relevant matches
9.2
Official ranking percentile
Top 76%
Performance
12.2 pp below expectation

9.2 weighted matches against 11 different opponents across 4 events

Weighted win rate
32.8%
Expected win rate
45.0%
Average opponent rating
1,273
Repeated-opponent share
15.4%
Network connectivity
87.6%

Classification evidence

Why U16?

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

  • U16 3 event votes Selected outcome

Registrations and outcomes

2026 AGF Antwerp Championships
U16 · Counts
No Gi Kids Challenger / Boys / White Challenger / Light I (Up to 43.10 kg)
  • Competition age 14
  • Registered age: u16
  • Source category: u16
Competition T-shirt / Youth Medium
No Gi Kids / Boys / Juniors (12 - 13 yrs) / White / Light I (Up to 43.10 kg)
  • Competition age 14
  • Registered age: u14
  • Source category: u14
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026
U16 · Counts
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -43kg (cat 2 : 12-13-14-15)
  • Competition age 14
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
U16 · Counts
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -38kg (cat 2 : 10-11-12-13)
  • Competition age 14
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -38kg (cat 2 :10-11-12-13)
  • Competition age 14
Grappling Industries BRUSSELS
Does not count
No Gi Kids / Beginner (White) / 12 - 13 years (Male) / -85 lbs
  • Competition age 13
  • Registered age: u14
  • Source category: u14
Gi Kids / White / 12 - 13 years (Male) / -95 lbs
  • Competition age 13
  • Registered age: u14
  • Source category: u14
INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10
Does not count
Boys Youth Gi / White & Grey / 13-15 / -44kg
  • Competition age 13

Classification evidence

Why ≤ 38 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

  • ≤ 38 kg 1 competition event Selected outcome
  • ≤ 43 kg 2 competition events

Registrations and outcomes

2026 AGF Antwerp Championships
≤ 43 kg · Counts as a competition event
No Gi Kids Challenger / Boys / White Challenger / Light I (Up to 43.10 kg)
  • Registered weight class: Light I (Up to 43.10 kg)
  • Source competition limit: Light I (Up to 43.10 kg)

2 matches in the rating period

2026 AGF Antwerp Championships
Does not count
Competition T-shirt / Youth Medium

No matches in the rating period · no valid weight evidence

2026 AGF Antwerp Championships
≤ 43 kg · Counts as a competition event
No Gi Kids / Boys / Juniors (12 - 13 yrs) / White / Light I (Up to 43.10 kg)
  • Registered weight class: Light I (Up to 43.10 kg)
  • Source competition limit: Light I (Up to 43.10 kg)

2 matches in the rating period

OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026
≤ 43 kg · Counts as a competition event
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -43kg (cat 2 : 12-13-14-15)
  • Registered weight class: -43kg (cat 2 : 12-13-14-15)
  • Source competition limit: -43kg (cat 2 : 12-13-14-15)

2 matches in the rating period

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
≤ 38 kg · Counts as a competition event
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -38kg (cat 2 : 10-11-12-13)
  • Registered weight class: -38kg (cat 2 : 10-11-12-13)
  • Source competition limit: -38kg (cat 2 : 10-11-12-13)

2 matches in the rating period

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
≤ 38 kg · Counts as a competition event
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -38kg (cat 2 :10-11-12-13)
  • Registered weight class: -38kg (cat 2 :10-11-12-13)
  • Source competition limit: -38kg (cat 2 :10-11-12-13)

3 matches in the rating period

Grappling Industries BRUSSELS
Does not count
No Gi Kids / Beginner (White) / 12 - 13 years (Male) / -85 lbs
  • Registered weight class: -85 lbs
  • Source competition limit: -85 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries BRUSSELS
Does not count
Gi Kids / White / 12 - 13 years (Male) / -95 lbs
  • Registered weight class: -95 lbs
  • Source competition limit: -95 lbs

No matches in the rating period · no valid weight evidence

INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10
Does not count
Boys Youth Gi / White & Grey / 13-15 / -44kg

2 matches in the rating period · weight class could not be normalized reliably

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 4 matches in the rating period Selected outcome
  • grey 2 matches in the rating period

Registrations and outcomes

2026 AGF Antwerp Championships
white · Counts as a match
No Gi Kids Challenger / Boys / White Challenger / Light I (Up to 43.10 kg)
  • Source belt category: white

2 matches in the rating period

2026 AGF Antwerp Championships
white · Counts as a match
No Gi Kids / Boys / Juniors (12 - 13 yrs) / White / Light I (Up to 43.10 kg)
  • Source belt category: white

2 matches in the rating period

INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10
grey · Counts as a match
Boys Youth Gi / White & Grey / 13-15 / -44kg
  • Source belt category: grey

2 matches in the rating period