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 Change +1 Rating 1,456

Rating-period composition

Rating matches
21 0
Record
14–7 Previous month 14–7
Opponents
16 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 0 Rating 1,455

Rating-period composition

Rating matches
21 0
Record
14–7 Previous month 14–7
Opponents
16 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 No new matches Change 0 Rating 1,455

Rating-period composition

Rating matches
21 0
Record
14–7 Previous month 14–7
Opponents
16 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.

May 2026 5 new matches · 3 left period Change -38 Rating 1,455

Rating-period composition

Rating matches
21 +2
Record
14–7 Previous month 15–4
Opponents
16 +3
Events
4 0

3 older matches left the 12-month period: 3 won and 0 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
May 9, 2026 Muhammad Hotak
Lion Cub Jiu Jitsu Competition 6 Boys NO-GI / 9 years old (DAY 2: Sunday) / Yellow belt / -34 & -38 kg
Method Submission 01:17 2–3
Marginal influence -12
Loss
May 9, 2026 Vova Petrunin
Lion Cub Jiu Jitsu Competition 6 Boys NO-GI / 9 years old (DAY 2: Sunday) / Yellow belt / -34 & -38 kg
Method Points 03:00 2–2
Marginal influence -15
Loss
May 9, 2026 Muhammad Hotak
Lion Cub Jiu Jitsu Competition 6 Boys GI / 9 years old (DAY 2: Sunday) / Yellow belt / -38 & -42 kg
Method Submission 00:37 0–0
Marginal influence -11
Win
May 9, 2026 Max Hollander
Lion Cub Jiu Jitsu Competition 6 Boys GI / 9 years old (DAY 2: Sunday) / Yellow belt / -38 & -42 kg
Method Submission 00:36 2–0
Marginal influence +7
Win
May 9, 2026 Kaan De Keijzer
Lion Cub Jiu Jitsu Competition 6 Boys GI / 9 years old (DAY 2: Sunday) / Yellow belt / -38 & -42 kg
Method Submission 00:39 3–0
Marginal influence +10
April 2026 No new matches Change -7 Rating 1,493

Rating-period composition

Rating matches
19 0
Record
15–4 Previous month 15–4
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.

March 2026 5 new matches Change +36 Rating 1,500

Rating-period composition

Rating matches
19 +5
Record
15–4 Previous month 11–3
Opponents
13 +1
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
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids GI / 8 - 9 years / White & Grey & Yellow / -38 kg
Method Submission 00:13 0–0
Marginal influence -6
Win
March 28, 2026 Franco Hendriks
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids GI / 8 - 9 years / White & Grey & Yellow / -38 kg
Method Points 03:00 4–0
Marginal influence +8
Win
March 28, 2026 Rheyven Tsang
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids GI / 8 - 9 years / White & Grey & Yellow / -38 kg
Method Points 03:00 5–2
Marginal influence +14
Win
March 28, 2026 Franco Hendriks
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids No-GI / 8 - 9 years boys / Grey & Yellow / -38 kg
Method Points 03:00 10–0
Marginal influence +3
Win
March 28, 2026 Rheyven Tsang
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids No-GI / 8 - 9 years boys / Grey & Yellow / -38 kg
Method Points 03:00 2–0
Marginal influence +4
February 2026 No new matches Change +3 Rating 1,464

Rating-period composition

Rating matches
14 0
Record
11–3 Previous month 11–3
Opponents
12 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.

January 2026 No new matches Change -2 Rating 1,461

Rating-period composition

Rating matches
14 0
Record
11–3 Previous month 11–3
Opponents
12 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.

December 2025 No new matches Change 0 Rating 1,463

Rating-period composition

Rating matches
14 0
Record
11–3 Previous month 11–3
Opponents
12 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.

November 2025 No new matches Change +8 Rating 1,463

Rating-period composition

Rating matches
14 0
Record
11–3 Previous month 11–3
Opponents
12 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.

October 2025 8 new matches · 4 left period Change +5 Rating 1,455

Rating-period composition

Rating matches
14 +4
Record
11–3 Previous month 8–2
Opponents
12 +2
Events
3 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.
Loss
October 25, 2025 Ayoub El Atrach
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / Grey belt / -34 kg
Method Points 03:00 0–2
Marginal influence -8
Win
October 25, 2025 Jamie Van Der Arend
Lion Cub Jiu Jitsu Competition 5 Boys NO-GI / 8 & 9 years old (DAY 2: Sunday) / Grey & Yellow belt / -34 & -38 kg
Method Points 03:00 2–0
Marginal influence +4
Win
October 25, 2025 Rheyven Tsang
Lion Cub Jiu Jitsu Competition 5 Boys NO-GI / 8 & 9 years old (DAY 2: Sunday) / Grey & Yellow belt / -34 & -38 kg
Method Points 03:00 4–0
Marginal influence +4
Win
October 25, 2025 Jefta Vis
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / Grey belt / -34 kg
Method Submission 01:19 5–0
Marginal influence +9
Win
October 25, 2025 Ayoub El Atrach
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / Grey belt / -34 kg
Method Points 03:00 4–2
Marginal influence +10
Win
October 25, 2025 Klaas Buwalda
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / Grey belt / -34 kg
Method Submission 00:42 0–0
Marginal influence +7
Loss
October 25, 2025 Zachary CARLHIAN
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / Grey belt / -34 kg
Method Points 03:00 0–5
Marginal influence -13
Win
October 25, 2025 Seymen Efe CAGLAR
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / Grey belt / -34 kg
Method Points 03:00 8–0
Marginal influence +8
September 2025 3 new matches Change +14 Rating 1,450

Rating-period composition

Rating matches
10 +3
Record
8–2 Previous month 6–1
Opponents
10 +3
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
September 7, 2025 Daniël Van Drie
Gelders Open BJJ Kids / 8 - 9 years boys / White & Grey / -34 & -38 kg
Method Points 03:00 2–6
Marginal influence -15
Win
September 7, 2025 Jaxon Van Den Top
Gelders Open BJJ Kids / 8 - 9 years boys / White & Grey / -34 & -38 kg
Method Submission 00:21 0–0
Marginal influence +9
Win
September 7, 2025 Jinte Hurkens
Gelders Open BJJ Kids / 8 - 9 years boys / White & Grey / -34 & -38 kg
Method Points 03:00 11–0
Marginal influence +19
Relevant matches
14.9
Official ranking percentile
Top 14%
Performance
10.0 pp above expectation

14.9 weighted matches against 16 different opponents across 4 events

Weighted win rate
66.0%
Expected win rate
56.0%
Average opponent rating
1,339
Repeated-opponent share
23.8%
Network connectivity
80.9%