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 0 Rating 1,362

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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.

July 2026 No new matches Change 0 Rating 1,362

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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.

June 2026 3 new matches · 6 left period Change -42 Rating 1,362

Rating-period composition

Rating matches
6 -3
Record
4–2 Previous month 6–3
Opponents
5 -1
Events
3 0

6 older matches left the 12-month period: 4 won and 2 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 28, 2026 Alexander Ciornii
ADCC AUSTRIAN OPEN 2026 Boys 9-10 years / Beginner / -32 kg
Method Points 04:00 -1–0
Marginal influence -29
Win
June 6, 2026 Nathan Goldovskiy
NEX Kids / -34,80 kg
Method Submission 2–0
Marginal influence +24
Win
June 6, 2026 Leonora Grubesic
NEX Kids / -34,80 kg
Method Submission 00:21 0–0
Marginal influence +20
May 2026 3 new matches · 11 left period Change -128 Rating 1,404

Rating-period composition

Rating matches
9 -8
Record
6–3 Previous month 15–2
Opponents
6 -5
Events
3 -1

11 older matches left the 12-month period: 11 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.
Win
Vienna Open Championship 2026 - Offene Wiener Landesmeisterschaft 2026 Jiu Jitsu Gi (BJJ Gi) - Male / U12 / Grey / Yellow Belt (Advanced Kids) / -32 kg
Method Submission 00:16 2–0
Marginal influence +17
Loss
May 16, 2026 Alexander Ciornii
Vienna Open Championship 2026 - Offene Wiener Landesmeisterschaft 2026 Jiu Jitsu Gi (BJJ Gi) - Male / U12 / Grey / Yellow Belt (Advanced Kids) / -32 kg
Method Submission 01:12 0–7
Marginal influence -12
Win
May 16, 2026 Ivan Vesely
Vienna Open Championship 2026 - Offene Wiener Landesmeisterschaft 2026 Jiu Jitsu Gi (BJJ Gi) - Male / U12 / Grey / Yellow Belt (Advanced Kids) / -32 kg
Method Submission 00:07 0–0
Marginal influence +19
April 2026 No new matches Change -1 Rating 1,532

Rating-period composition

Rating matches
17 0
Record
15–2 Previous month 15–2
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.

March 2026 No new matches Change -3 Rating 1,533

Rating-period composition

Rating matches
17 0
Record
15–2 Previous month 15–2
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.

February 2026 No new matches Change +2 Rating 1,536

Rating-period composition

Rating matches
17 0
Record
15–2 Previous month 15–2
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.

January 2026 No new matches Change -1 Rating 1,534

Rating-period composition

Rating matches
17 0
Record
15–2 Previous month 15–2
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.

December 2025 No new matches Change -3 Rating 1,535

Rating-period composition

Rating matches
17 0
Record
15–2 Previous month 15–2
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.

November 2025 No new matches · 2 left period Change +2 Rating 1,538

Rating-period composition

Rating matches
17 -2
Record
15–2 Previous month 16–3
Opponents
11 -1
Events
4 -1

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.

October 2025 No new matches Change -4 Rating 1,536

Rating-period composition

Rating matches
19 0
Record
16–3 Previous month 16–3
Opponents
12 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.

September 2025 No new matches Change 0 Rating 1,540

Rating-period composition

Rating matches
19 0
Record
16–3 Previous month 16–3
Opponents
12 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
5
Official ranking percentile
Top 39%
Performance
13.6 pp above expectation

5 weighted matches against 5 different opponents across 3 events

Weighted win rate
64.5%
Expected win rate
50.9%
Average opponent rating
1,339
Repeated-opponent share
16.7%
Network connectivity
80.9%