TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
BE

Nyl Covyn

CMFC MMA Sambo Ju-Jitsu

W–L
15–10
Won and lost rating-eligible matches in the past 12 months.
Gi
1,458
Rating based on Gi matches in the past 12 months.
No-Gi
1,278
Rating based on No-Gi matches in the past 12 months.
Current form
3–7
Results from the ten most recent rating-eligible matches.
Opponents
17
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

8
Events
Date Event Result Format Division
2026 AGF Antwerp Championships Belgium · Gi · 12–13 yo · grey · ≤34 kg ; No-Gi · 12–13 yo · grey · ≤34 kg 1–4 W–L: Win / Loss GiNo-Gi
  • Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
2026 AGF Belgium Championships Belgium · Gi · 12–13 yo · grey · ≤34 kg ; No-Gi · 12–13 yo · grey · ≤34 kg 3–3 W–L: Win / Loss GiNo-Gi
  • Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Place #4
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 Belgium · 11–12 yo · ≤34 kg ; No-Gi · 16 yo · ≤34 kg 6–1 W–L: Win / Loss No-Gi
  • NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -34kg (cat 2 : 10-11-12)
  • BOY KID -34kg CAT 3 (11-12)
The Future League 8 – Gi & No-Gi the Netherlands · 11 ; Gi · ≤12 kg 5–2 W–L: Win / Loss Gi
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025 Belgium · Gi · 16 yo · ≤34 kg ; No-Gi · 16 yo · ≤34 kg 4–2 W–L: Win / Loss GiNo-Gi
  • NoGi DIVISION (-16years old) / KID NoGi / -34kg (cat 2 : 10-11-12)
  • BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -34kg* (cat 2 : 9-10-11- 12)
2025 AGF Antwerp Championships Belgium · Gi · 10–11 yo · white · ≤34 kg ; No-Gi · 10–11 yo · white · ≤34 kg 0–4 W–L: Win / Loss GiNo-Gi
  • Gi Kids / Boys / Pre Teen (10 - 11 yrs) / White / Feather II (Up to 34.00 kg)
  • No Gi Kids / Boys / Pre Teen (10 - 11 yrs) / White / Feather II (Up to 34.00 kg)
BRUSSELS OPEN FBJJB KID Gi & NoGi 29.03.2025 Belgium · Gi · 16 yo · ≤34 kg ; No-Gi · 16 yo · ≤34 kg 2–4 W–L: Win / Loss GiNo-Gi
  • Place #4
Belgian Championship 2024 BJJ Gi & No Gi Kids & Youth / Championnat de Belgique JJB 2024 Gi & No Gi Kids & Youth Belgium · 11–12 yo · white/grey · ≤36 kg ; No-Gi · 11–12 yo · white/grey · ≤36 kg 3–3 W–L: Win / Loss No-Gi
  • Place #4
  • Boys No Gi / White & Grey / 10-11-12 yrs / -36 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 1,435

Rating-period composition

Rating matches
25 0
Record
15–10 Previous month 15–10
Opponents
17 0
Events
5 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 1,434

Rating-period composition

Rating matches
25 0
Record
15–10 Previous month 15–10
Opponents
17 0
Events
5 0

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

June 2026 5 new matches · 4 left period Change -17 Rating 1,433

Rating-period composition

Rating matches
25 +1
Record
15–10 Previous month 14–10
Opponents
17 +2
Events
5 0

4 older matches left the 12-month period: 0 won and 4 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
June 13, 2026 Mansur Inalkayev
2026 AGF Antwerp Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Points 03:00 1–9
Marginal influence -13
Loss
June 13, 2026 Amir Khatsiev
2026 AGF Antwerp Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 01:48 0–4
Marginal influence -13
Loss
June 13, 2026 Mansur Inalkayev
2026 AGF Antwerp Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 03:00 7–2
Marginal influence -5
Win
June 13, 2026 Mansur Inalkayev
2026 AGF Antwerp Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 00:08 0–0
Marginal influence +8
Loss
June 13, 2026 Mansur Inalkayev
2026 AGF Antwerp Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 02:06 1–1
Marginal influence -5
May 2026 6 new matches Change +15 Rating 1,450

Rating-period composition

Rating matches
24 +6
Record
14–10 Previous month 11–7
Opponents
15 +3
Events
5 +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 10, 2026 Tommy Tyrrell
2026 AGF Belgium Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 00:57 2–0
Marginal influence -12
Win
May 10, 2026 Aaron Hussain
2026 AGF Belgium Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 02:30 2–2
Marginal influence +9
Loss
May 10, 2026 Mesa Vermin
2026 AGF Belgium Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Points 03:00 0–2
Marginal influence -12
Win
May 10, 2026 Aaron Hussain
2026 AGF Belgium Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 00:37 0–1
Marginal influence +10
Loss
May 10, 2026 Tommy Tyrrell
2026 AGF Belgium Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 01:55 4–6
Marginal influence -11
Win
May 10, 2026 Mesa Vermin
2026 AGF Belgium Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
Method Submission 00:51 0–2
Marginal influence +14
April 2026 No new matches Change -1 Rating 1,435

Rating-period composition

Rating matches
18 0
Record
11–7 Previous month 11–7
Opponents
12 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.

March 2026 4 new matches · 6 left period Change +18 Rating 1,436

Rating-period composition

Rating matches
18 -2
Record
11–7 Previous month 10–10
Opponents
12 -1
Events
4 0

6 older matches left the 12-month period: 2 won and 4 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.
Win
March 14, 2026 Harun Ahmed Egal
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -34kg (cat 2 : 10-11-12)
Method Submission 00:48 0–0
Marginal influence +3
Win
March 14, 2026 Tomasz Kowalczyk
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -34kg (cat 2 : 10-11-12)
Method Submission 00:11 0–0
Marginal influence +4
Loss
March 14, 2026 Colin Schulze
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -34kg (cat 2 : 10-11-12)
Method Points 03:00 2–6
Marginal influence -13
Win
March 14, 2026 Harun Ahmed Egal
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -34kg (cat 2 : 10-11-12)
Method Submission 00:36 5–0
Marginal influence +3
February 2026 No new matches Change +1 Rating 1,418

Rating-period composition

Rating matches
20 0
Record
10–10 Previous month 10–10
Opponents
13 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.

January 2026 No new matches Change -4 Rating 1,417

Rating-period composition

Rating matches
20 0
Record
10–10 Previous month 10–10
Opponents
13 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.

December 2025 No new matches Change -2 Rating 1,421

Rating-period composition

Rating matches
20 0
Record
10–10 Previous month 10–10
Opponents
13 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.

November 2025 4 new matches · 1 left period Change +74 Rating 1,423

Rating-period composition

Rating matches
20 +3
Record
10–10 Previous month 6–11
Opponents
13 +3
Events
4 0

1 older matches left the 12-month period: 0 won and 1 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.
Win
November 30, 2025 Aaron Imamdi
The Future League 8 – Gi & No-Gi Gi-12
Method Submission 01:39 6–0
Marginal influence +12
Win
November 30, 2025 Tygo Berkelaar
The Future League 8 – Gi & No-Gi Gi-12
Method Submission 01:57 9–0
Marginal influence +10
Win
November 30, 2025 Leen Franssen
The Future League 8 – Gi & No-Gi Gi-12
Method Submission 01:02 5–0
Marginal influence +7
Win
November 30, 2025 Lennon Carr
The Future League 8 – Gi & No-Gi Gi-12
Method Submission 00:31 0–0
Marginal influence +8
October 2025 No new matches Change +1 Rating 1,349

Rating-period composition

Rating matches
17 0
Record
6–11 Previous month 6–11
Opponents
10 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.

September 2025 6 new matches Change +88 Rating 1,348

Rating-period composition

Rating matches
17 +6
Record
6–11 Previous month 2–9
Opponents
10 +4
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.
Loss
September 20, 2025 Bruce Broekhuizen
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025 NoGi DIVISION (-16years old) / KID NoGi / -34kg (cat 2 : 10-11-12)
Method Submission 00:55 0–6
Marginal influence -7
Win
September 20, 2025 Guy Lev
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025 NoGi DIVISION (-16years old) / KID NoGi / -34kg (cat 2 : 10-11-12)
Method Submission 00:44 9–0
Marginal influence +4
Win
September 20, 2025 Arsène De Liedekerke
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -34kg* (cat 2 : 9-10-11- 12)
Method Points 03:00 5–0
Marginal influence +13
Win
September 20, 2025 Mohamed Bensiali El Hakiki
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -34kg* (cat 2 : 9-10-11- 12)
Method Submission 00:56 3–0
Marginal influence +9
Loss
September 20, 2025 Bruce Broekhuizen
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -34kg* (cat 2 : 9-10-11- 12)
Method Submission 00:30 0–0
Marginal influence -4
Win
September 20, 2025 Ibrahim Maajam
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -34kg* (cat 2 : 9-10-11- 12)
Method Submission 00:33 0–0
Marginal influence +10
Relevant matches
17.3
Official ranking percentile
Top 19%
Performance
9.2 pp above expectation

17.3 weighted matches against 17 different opponents across 5 events

Weighted win rate
60.0%
Expected win rate
50.9%
Average opponent rating
1,366
Repeated-opponent share
32.0%
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 3 event votes Selected outcome

Registrations and outcomes

2026 AGF Antwerp Championships
U14 · Counts
Competition T-shirt / Youth Medium
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
2026 AGF Belgium Championships
U14 · Counts
Competition T-shirt / Youth Medium
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
U14 · Counts
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -34kg (cat 2 : 10-11-12)
  • Competition age 12
BOY KID -34kg CAT 3 (11-12)
  • Competition age 12
The Future League 8 – Gi & No-Gi
Does not count
Gi-12
  • Competition age 11
  • Registered age: u14
  • Source category: u14
11
  • Competition age 11
  • Registered age: u12
  • Source category: u12
BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025
Does not count
NoGi DIVISION (-16years old) / KID NoGi / -34kg (cat 2 : 10-11-12)
  • Competition age 11
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -34kg* (cat 2 : 9-10-11- 12)
  • Competition age 11

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 3 competition events Selected outcome

Registrations and outcomes

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
≤ 34 kg · Counts as a competition event
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Registered weight class: Feather II (Up to 34.00 kg)
  • Source competition limit: Feather II (Up to 34.00 kg)

2 matches in the rating period

2026 AGF Antwerp Championships
≤ 34 kg · Counts as a competition event
Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Registered weight class: Feather II (Up to 34.00 kg)
  • Source competition limit: Feather II (Up to 34.00 kg)

3 matches in the rating period

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

No matches in the rating period · no valid weight evidence

2026 AGF Belgium Championships
≤ 34 kg · Counts as a competition event
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Registered weight class: Feather II (Up to 34.00 kg)
  • Source competition limit: Feather II (Up to 34.00 kg)

3 matches in the rating period

2026 AGF Belgium Championships
≤ 34 kg · Counts as a competition event
Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Registered weight class: Feather II (Up to 34.00 kg)
  • Source competition limit: Feather II (Up to 34.00 kg)

3 matches in the rating period

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
≤ 34 kg · Counts as a competition event
NoGi DIVISION (-16years old) / KID NoGi / KID (-16years old) / -34kg (cat 2 : 10-11-12)
  • Registered weight class: -34kg (cat 2 : 10-11-12)
  • Source competition limit: -34kg (cat 2 : 10-11-12)

4 matches in the rating period

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
Does not count
BOY KID -34kg CAT 3 (11-12)
  • Registered weight class: BOY KID -34kg CAT 3 (11-12)
  • Source competition limit: BOY KID -34kg CAT 3 (11-12)

No matches in the rating period · no valid weight evidence

The Future League 8 – Gi & No-Gi
Does not count
Gi-12

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

The Future League 8 – Gi & No-Gi
Does not count
11

No matches in the rating period · no valid weight evidence

BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025
≤ 34 kg · Does not count
NoGi DIVISION (-16years old) / KID NoGi / -34kg (cat 2 : 10-11-12)
  • Registered weight class: -34kg (cat 2 : 10-11-12)
  • Source competition limit: -34kg (cat 2 : 10-11-12)

2 matches in the rating period · outside the three most recent unambiguous events

BRUSSELS KID (-16y) FBJJB OPEN 1 - Gi & NoGi 20.09.2025
≤ 34 kg · Does not count
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -34kg* (cat 2 : 9-10-11- 12)
  • Registered weight class: -34kg (cat 2 : 9-10-11- 12)
  • Source competition limit: -34kg (cat 2 : 9-10-11- 12)

4 matches in the rating period · outside the three most recent unambiguous events

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
  • white 2 matches in the rating period

Registrations and outcomes

2026 AGF Antwerp Championships
white · Counts as a match
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Source belt category: white

2 matches in the rating period

2026 AGF Antwerp Championships
grey · Counts as a match
Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Source belt category: grey

3 matches in the rating period

2026 AGF Belgium Championships
grey · Counts as a match
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Source belt category: grey

3 matches in the rating period

2026 AGF Belgium Championships
grey · Counts as a match
Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Feather II (Up to 34.00 kg)
  • Source belt category: grey

3 matches in the rating period