TopBJJ Index Youth
Language selector
Menu

Calculation details

Rating breakdown for the past 12 months

Close

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 · 5 left period Change -9 Rating 1,470

Rating-period composition

Rating matches
30 -5
Record
17–13 Previous month 21–14
Opponents
18 -2
Events
8 -1

5 older matches left the 12-month period: 4 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

July 2026 No new matches Change -1 Rating 1,479

Rating-period composition

Rating matches
35 0
Record
21–14 Previous month 21–14
Opponents
20 0
Events
9 0

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

June 2026 9 new matches Change -6 Rating 1,480

Rating-period composition

Rating matches
35 +9
Record
21–14 Previous month 19–7
Opponents
20 +2
Events
9 +2

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 28, 2026 Rayan Mouhdad
All Stars BJJ Netherlands Mightyabsolute / Male / Grey / Teen / Under 50kg
Method Points 04:00 0–6
Marginal influence -4
Win
June 28, 2026 Maximus Lee
All Stars BJJ Netherlands Mightyabsolute / Male / Grey / Teen / Under 50kg
Method Points 04:00 12–2
Marginal influence +10
Loss
June 28, 2026 Rayan Mouhdad
All Stars BJJ Netherlands Juniornogi / Intermediate / Teen 2 / 50kg or less / Male
Method Disqualification 01:45 0–6
Marginal influence -5
Loss
June 28, 2026 Rayan Mouhdad
All Stars BJJ Netherlands Junior / Grey / Teen 2 / 50kg or less / Male
Method Submission 01:46 0–0
Marginal influence -4
Loss
June 6, 2026 Rayan Mouhdad
Cauliflower Cup Circuit 2 Boys No-Gi / Grey / Teen I (13yrs) / -51,00 kg
Method Submission 02:54 2–2
Marginal influence -4
Win
June 6, 2026 Kyano Keyzer
Cauliflower Cup Circuit 2 Boys No-Gi / Grey / Teen I (13yrs) / -51,00 kg
Method Submission 03:19 0–2
Marginal influence +5
Loss
June 6, 2026 Rayan Mouhdad
Cauliflower Cup Circuit 2 Boys No-Gi / Grey / Teen I (13yrs) / -51,00 kg
Method Points 05:00 0–2
Marginal influence -4
Loss
June 6, 2026 Rayan Mouhdad
Cauliflower Cup Circuit 2 Boys Gi / Grey / Teen I (13yrs) / -52,60 kg
Method Submission 03:11 0–0
Marginal influence -5
Loss
June 6, 2026 Rayan Mouhdad
Cauliflower Cup Circuit 2 Boys Gi / Grey / Teen I (13yrs) / -52,60 kg
Method Decision 05:00 0–0
Marginal influence -5
May 2026 3 new matches · 2 left period Change +24 Rating 1,486

Rating-period composition

Rating matches
26 +1
Record
19–7 Previous month 17–8
Opponents
18 +2
Events
7 0

2 older matches left the 12-month period: 1 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
May 30, 2026 Sandro Rubino
Nijmegen Open BJJ 2026 Kids / 10 - 12 years boys / Grey / -50 & -55kg
Method Submission 00:57 7–0
Marginal influence +9
Win
May 30, 2026 Alexander Klak
Nijmegen Open BJJ 2026 Kids / 10 - 12 years boys / Grey / -50 & -55kg
Method Submission 00:16 0–0
Marginal influence +7
Win
May 30, 2026 Mads Van Staveren
Nijmegen Open BJJ 2026 Kids / 10 - 12 years boys / Grey / -50 & -55kg
Method Submission 00:16 0–0
Marginal influence +9
April 2026 4 new matches · 4 left period Change -13 Rating 1,462

Rating-period composition

Rating matches
25 0
Record
17–8 Previous month 17–8
Opponents
16 -2
Events
7 0

4 older matches left the 12-month period: 3 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
April 18, 2026 Rayan Mouhdad
2026 AGF Netherlands Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Light III (Up to 52.20 kg)
Method Points 03:00 2–2
Marginal influence +3
Loss
April 18, 2026 Rayan Mouhdad
2026 AGF Netherlands Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Light III (Up to 52.20 kg)
Method Points 03:00 0–2
Marginal influence -3
Win
April 18, 2026 Rayan Mouhdad
2026 AGF Netherlands Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Gray / Light III (Up to 52.20 kg)
Method Points 03:00 2–2
Marginal influence +3
Win
April 18, 2026 Luuk Van Der Put
2026 AGF Netherlands Championships Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
Method Submission 01:42 1–2
Marginal influence +4
March 2026 5 new matches Change +56 Rating 1,475

Rating-period composition

Rating matches
25 +5
Record
17–8 Previous month 12–8
Opponents
18 +3
Events
7 +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
March 22, 2026 Keano Koevoets
The Future League 9 - Gi & NoGi Gi - 46
Method Submission 00:23 0–0
Marginal influence +7
Win
March 22, 2026 Ties Serton
The Future League 9 - Gi & NoGi Gi - 46
Method Submission 00:06 0–0
Marginal influence +5
Win
March 22, 2026 Harun Ibrahim
The Future League 9 - Gi & NoGi Gi - 46
Method Submission 01:18 2–0
Marginal influence +10
Win
March 22, 2026 Harun Ibrahim
The Future League 9 - Gi & NoGi NoGi - 14
Method Points 03:00 6–0
Marginal influence +8
Win
March 22, 2026 Keano Koevoets
The Future League 9 - Gi & NoGi NoGi - 14
Method Submission 00:18 0–0
Marginal influence +3
February 2026 2 new matches · 1 left period Change +3 Rating 1,419

Rating-period composition

Rating matches
20 +1
Record
12–8 Previous month 12–7
Opponents
15 0
Events
6 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.
Loss
February 22, 2026 Euan Besems
GrappleCity: Rotterdam Spring Open Teens NoGi / Grey / 12-13 years / -50kg / Boy
Method Points 04:00 0–6
Marginal influence -8
Loss
February 22, 2026 Euan Besems
GrappleCity: Rotterdam Spring Open Teens Gi / Grey / 12-13 years / -50kg / Boy
Method Submission 03:11 0–4
Marginal influence -9
January 2026 No new matches Change -3 Rating 1,416

Rating-period composition

Rating matches
19 0
Record
12–7 Previous month 12–7
Opponents
15 0
Events
6 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 1,419

Rating-period composition

Rating matches
19 0
Record
12–7 Previous month 12–7
Opponents
15 0
Events
6 0

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

November 2025 2 new matches Change +2 Rating 1,419

Rating-period composition

Rating matches
19 +2
Record
12–7 Previous month 11–6
Opponents
15 +2
Events
6 +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 9, 2025 Parsa Kashani Nejad
GrappleCity: Rotterdam Winter Open Teens Gi / Grey / 12-13 years / -50kg / Boy
Method Points 04:00 4–10
Marginal influence -11
Win
November 9, 2025 Skyler Van Daalen
GrappleCity: Rotterdam Winter Open Teens Gi / Grey / 12-13 years / -50kg / Boy
Method Submission 01:00 0–0
Marginal influence +9
October 2025 5 new matches · 2 left period Change +28 Rating 1,417

Rating-period composition

Rating matches
17 +3
Record
11–6 Previous month 9–5
Opponents
13 +3
Events
5 0

2 older matches left the 12-month period: 1 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.
Loss
October 25, 2025 Noah Mason
Lion Cub Jiu Jitsu Competition 5 Boys & Girls GI / 12 - 14 years old (DAY 1: Saturday) / White & Grey belt / -46 & -50 & -55 kg
Method Submission 02:18 0–2
Marginal influence -9
Win
October 25, 2025 Amy Broodkoorn
Lion Cub Jiu Jitsu Competition 5 Boys & Girls GI / 12 - 14 years old (DAY 1: Saturday) / White & Grey belt / -46 & -50 & -55 kg
Method Points 03:00 6–2
Marginal influence +16
Loss
October 25, 2025 Mouad Zouggari
Lion Cub Jiu Jitsu Competition 5 Boys & Girls GI / 12 - 14 years old (DAY 1: Saturday) / White & Grey belt / -46 & -50 & -55 kg
Method Submission 01:42 0–0
Marginal influence -11
Win
October 25, 2025 Anouar Mokhtar
Lion Cub Jiu Jitsu Competition 5 Boys NO-GI / 12 years old (DAY 1: Saturday) / Grey belt / -46 & -50 kg
Method Points 03:00 4–0
Marginal influence +7
Win
October 25, 2025 Romaoric Van Rijnsoever
Lion Cub Jiu Jitsu Competition 5 Boys NO-GI / 12 years old (DAY 1: Saturday) / Grey belt / -46 & -50 kg
Method Points 03:00 18–0
Marginal influence +3
September 2025 No new matches Change +2 Rating 1,389

Rating-period composition

Rating matches
14 0
Record
9–5 Previous month 9–5
Opponents
10 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.

Relevant matches
20
Official ranking percentile
Top 12%
Performance
13.3 pp above expectation

20 weighted matches against 18 different opponents across 8 events

Weighted win rate
63.4%
Expected win rate
50.1%
Average opponent rating
1,385
Repeated-opponent share
40.0%
Network connectivity
80.9%