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 1,363

Rating-period composition

Rating matches
11 0
Record
8–3 Previous month 8–3
Opponents
8 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.

July 2026 No new matches Change -4 Rating 1,363

Rating-period composition

Rating matches
11 0
Record
8–3 Previous month 8–3
Opponents
8 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.

June 2026 No new matches Change +3 Rating 1,367

Rating-period composition

Rating matches
11 0
Record
8–3 Previous month 8–3
Opponents
8 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.

May 2026 No new matches · 4 left period Change -55 Rating 1,364

Rating-period composition

Rating matches
11 -4
Record
8–3 Previous month 11–4
Opponents
8 -4
Events
2 -1

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.

April 2026 No new matches Change -1 Rating 1,419

Rating-period composition

Rating matches
15 0
Record
11–4 Previous month 11–4
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.

March 2026 7 new matches Change +81 Rating 1,420

Rating-period composition

Rating matches
15 +7
Record
11–4 Previous month 6–2
Opponents
12 +5
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.
Win
March 21, 2026 Alessandro Vaňátko
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
Method Points 04:00 29–0
Marginal influence +13
Win
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
Method Points 04:00 18–4
Marginal influence +14
Win
March 21, 2026 Artem Bondarenko
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -60 kg
Method Submission 02:39 14–0
Marginal influence +22
Win
March 21, 2026 Denis Krejčík
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -60 kg
Method Submission 01:56 4–0
Marginal influence +16
Loss
March 21, 2026 Jan Vaculík
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -60 kg
Method Disqualification 00:34 2–0
Marginal influence -23
Win
March 21, 2026 Vojtěch Kotula
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -60 kg
Method Submission 00:24 4–0
Marginal influence +21
Loss
March 21, 2026 Denis Krejčík
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -60 kg
Method Submission 01:06 0–0
Marginal influence -19
February 2026 No new matches · 2 left period Change +29 Rating 1,339

Rating-period composition

Rating matches
8 -2
Record
6–2 Previous month 6–4
Opponents
7 -1
Events
2 -1

2 older matches left the 12-month period: 0 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

January 2026 No new matches Change -1 Rating 1,310

Rating-period composition

Rating matches
10 0
Record
6–4 Previous month 6–4
Opponents
8 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 -21 Rating 1,311

Rating-period composition

Rating matches
10 0
Record
6–4 Previous month 6–4
Opponents
8 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 -3 Rating 1,332

Rating-period composition

Rating matches
10 0
Record
6–4 Previous month 6–4
Opponents
8 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 No new matches Change +2 Rating 1,335

Rating-period composition

Rating matches
10 0
Record
6–4 Previous month 6–4
Opponents
8 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.

September 2025 4 new matches Change +33 Rating 1,333

Rating-period composition

Rating matches
10 +4
Record
6–4 Previous month 3–3
Opponents
8 +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.
Win
September 20, 2025 Jaroslav Tobiška
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -55 kg
Method Submission 00:15 0–0
Marginal influence +7
Loss
September 20, 2025 Jan Vaculík
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -55 kg
Method Points 0–4
Marginal influence -26
Win
September 20, 2025 Milan Mozol
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -50 kg
Method Submission 01:38 0–0
Marginal influence +11
Win
September 20, 2025 Milan Mozol
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Boys / White/grey belt / -50 kg
Method Submission 00:24 0–0
Marginal influence +11
Relevant matches
6
Official ranking percentile
Top 39%
Performance
-

6 weighted matches against 8 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,257
Repeated-opponent share
27.3%
Network connectivity
80.9%