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 1,380

Rating-period composition

Rating matches
21 0
Record
12–9 Previous month 12–9
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.

July 2026 No new matches Change 0 Rating 1,380

Rating-period composition

Rating matches
21 0
Record
12–9 Previous month 12–9
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.

June 2026 No new matches Change +1 Rating 1,380

Rating-period composition

Rating matches
21 0
Record
12–9 Previous month 12–9
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.

May 2026 No new matches · 4 left period Change +22 Rating 1,379

Rating-period composition

Rating matches
21 -4
Record
12–9 Previous month 12–13
Opponents
13 0
Events
4 -1

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.

April 2026 5 new matches · 2 left period Change +68 Rating 1,357

Rating-period composition

Rating matches
25 +3
Record
12–13 Previous month 8–14
Opponents
13 +2
Events
5 0

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.

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 Alex Mráz
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 00:47 2–0
Marginal influence +5
Loss
April 18, 2026 Samuel Cetkovsky
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Points 03:00 0–4
Marginal influence -8
Win
April 18, 2026 Adam Klega
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Points 03:00 16–4
Marginal influence +7
Win
April 18, 2026 Alex Mráz
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
Method Submission 01:11 0–0
Marginal influence +11
Win
April 18, 2026 Tadeáš Bábíček
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
Method Points 03:00 0–0
Marginal influence +13
March 2026 6 new matches · 3 left period Change +33 Rating 1,289

Rating-period composition

Rating matches
22 +3
Record
8–14 Previous month 6–13
Opponents
11 +1
Events
5 0

3 older matches left the 12-month period: 2 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
March 22, 2026 Tadeáš Bábíček
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Points 03:00 2–2
Marginal influence +7
Loss
March 22, 2026 Samuel Cetkovsky
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 01:14 0–4
Marginal influence -7
Loss
March 22, 2026 Maxim Krmela
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 00:33 0–0
Marginal influence -6
Win
March 22, 2026 Jan Šprla
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Points 03:00 2–2
Marginal influence +4
Win
March 22, 2026 Jan Šprla
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
Method Points 03:00 11–0
Marginal influence +11
Win
March 22, 2026 Simona Kowolowská
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
Method Points 03:00 6–0
Marginal influence +15
February 2026 No new matches Change -7 Rating 1,256

Rating-period composition

Rating matches
19 0
Record
6–13 Previous month 6–13
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.

January 2026 No new matches Change 0 Rating 1,263

Rating-period composition

Rating matches
19 0
Record
6–13 Previous month 6–13
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.

December 2025 7 new matches · 4 left period Change -10 Rating 1,263

Rating-period composition

Rating matches
19 +3
Record
6–13 Previous month 6–10
Opponents
10 0
Events
5 0

4 older matches left the 12-month period: 2 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
December 20, 2025 Dominik Bátrla
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 02:23 2–2
Marginal influence -14
Loss
December 20, 2025 Antonin Tůma
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Points 03:00 2–9
Marginal influence -19
Loss
December 20, 2025 Samuel Cetkovsky
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 01:38 2–2
Marginal influence -8
Win
December 20, 2025 Matyáš Sztefek
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 01:07 9–0
Marginal influence +8
Loss
December 20, 2025 Filip Martinec
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Points 03:00 7–11
Marginal influence -15
Win
December 20, 2025 Samuel Cetkovsky
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Points 03:00 4–0
Marginal influence +11
Loss
December 20, 2025 Dominik Bátrla
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Points 03:00 2–6
Marginal influence -9
November 2025 No new matches · 4 left period Change +13 Rating 1,273

Rating-period composition

Rating matches
16 -4
Record
6–10 Previous month 7–13
Opponents
10 -3
Events
5 -1

4 older matches left the 12-month period: 1 won and 3 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

October 2025 3 new matches · 4 left period Change +25 Rating 1,260

Rating-period composition

Rating matches
20 -1
Record
7–13 Previous month 7–14
Opponents
13 -1
Events
6 -1

4 older matches left the 12-month period: 2 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.
Win
October 25, 2025 Lukáš Černoch
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2016,2017,2018)
Method Points 03:00 7–2
Marginal influence +12
Win
October 25, 2025 Dominik Bátrla
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2016,2017,2018)
Method Points 03:00 2–2
Marginal influence +10
Loss
October 25, 2025 Hynek Muroň
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2016,2017,2018)
Method Submission 02:23 4–4
Marginal influence -16
September 2025 No new matches Change -5 Rating 1,235

Rating-period composition

Rating matches
21 0
Record
7–14 Previous month 7–14
Opponents
14 0
Events
7 0

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

Relevant matches
14.5
Official ranking percentile
Top 33%
Performance
6.3 pp above expectation

14.5 weighted matches against 13 different opponents across 4 events

Weighted win rate
62.2%
Expected win rate
55.9%
Average opponent rating
1,257
Repeated-opponent share
38.1%
Network connectivity
80.9%