TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
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 · 2 left period Change -6 Rating 1,671

Rating-period composition

Rating matches
37 -2
Record
37–0 Previous month 39–0
Opponents
27 -1
Events
9 -1

2 older matches left the 12-month period: 2 won and 0 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 1,677

Rating-period composition

Rating matches
39 0
Record
39–0 Previous month 39–0
Opponents
28 0
Events
10 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 · 4 left period Change -19 Rating 1,678

Rating-period composition

Rating matches
39 -4
Record
39–0 Previous month 43–0
Opponents
28 -3
Events
10 -1

4 older matches left the 12-month period: 4 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

May 2026 No new matches Change +8 Rating 1,697

Rating-period composition

Rating matches
43 0
Record
43–0 Previous month 43–0
Opponents
31 0
Events
11 0

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

April 2026 6 new matches Change +15 Rating 1,689

Rating-period composition

Rating matches
43 +6
Record
43–0 Previous month 37–0
Opponents
31 +4
Events
11 +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
April 12, 2026 Jirka Prošek
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 MMA Light / U15 Junioři chlapci / -50 kg
Method Points 02:00 1–0
Marginal influence +3
Win
April 12, 2026 Unknown opponent
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 MMA Light / U15 Junioři chlapci / -50 kg
Method Points 02:00 1–0
Marginal influence +5
Win
April 12, 2026 Maxmilián Kain
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling Gi / U15 Junioři chlapci / -50 kg
Method Submission 00:17 0–0
Marginal influence +2
Win
April 12, 2026 Maxmilián Kain
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling Gi / U15 Junioři chlapci / -50 kg
Method Submission 00:28 0–0
Marginal influence +2
Win
April 12, 2026 Simon Falešník
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling Gi / U15 Junioři chlapci / -55 kg
Method Submission 00:40 6–0
Marginal influence +2
Win
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling Gi / U15 Junioři chlapci / -55 kg
Method Submission 00:12 0–0
Marginal influence +3
March 2026 4 new matches · 9 left period Change -15 Rating 1,674

Rating-period composition

Rating matches
37 -5
Record
37–0 Previous month 42–0
Opponents
27 -2
Events
10 0

9 older matches left the 12-month period: 9 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
March 21, 2026 Lukáš Kubín
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / Yellow/orange/green belt / -55 kg
Method Submission 01:21 0–0
Marginal influence +6
Win
March 21, 2026 Dmytro Yankovyi
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / Yellow/orange/green belt / -55 kg
Method Submission 00:15 0–0
Marginal influence +3
Win
March 7, 2026 Nikolas Soudný
2026 AGF Prague Championships No Gi Kids Challenger / Boys / Regular Challenger / Light III (Up to 52.20 kg)
Method Submission 00:29 0–0
Marginal influence +4
Win
March 7, 2026 Nikolas Soudný
2026 AGF Prague Championships Gi Kids Challenger / Boys / Regular Challenger / Light III (Up to 52.20 kg)
Method Submission 00:47 2–0
Marginal influence +6
February 2026 13 new matches Change +45 Rating 1,689

Rating-period composition

Rating matches
42 +13
Record
42–0 Previous month 29–0
Opponents
29 +8
Events
10 +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.
Win
February 28, 2026 Simon Falešník
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling NoGi / U15 Junioři chlapci / -55 kg
Method Submission 00:45 6–0
Marginal influence +2
Win
February 28, 2026 Samuel Němec
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling NoGi / U15 Junioři chlapci / -55 kg
Method Submission 01:43 6–0
Marginal influence +4
Win
February 28, 2026 Jiří Chudý
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling Gi / U15 Junioři chlapci / -55 kg
Method Submission 00:16 0–1
Marginal influence +4
Win
February 28, 2026 Adam Nguyen
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling Gi / U15 Junioři chlapci / -55 kg
Method Submission 00:23 0–0
Marginal influence +3
Win
February 28, 2026 Martin Čermák
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling Gi / U15 Junioři chlapci / -50 kg
Method Submission 00:32 0–0
Marginal influence +2
Win
February 28, 2026 Simon Falešník
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling Gi / U15 Junioři chlapci / -50 kg
Method Submission 00:14 0–0
Marginal influence +3
Win
February 21, 2026 Musa Dogan
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / Yellow/orange/green belt / -50 kg
Method Submission 01:18 0–0
Marginal influence +4
Win
February 21, 2026 Adam Dockal
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / Yellow/orange/green belt / -50 kg
Method Submission 01:20 0–0
Marginal influence +6
Win
February 21, 2026 Adam Dockal
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 13-14 years / Boys / Intermediate / -50 kg
Method Submission 00:12 0–0
Marginal influence +3
Win
February 21, 2026 Musa Dogan
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 13-14 years / Boys / Intermediate / -50 kg
Method Submission 00:33 0–0
Marginal influence +2
Win
February 21, 2026 Patrik Trávníček
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 13-14 years / Boys / Intermediate / -50 kg
Method Submission 00:22 0–0
Marginal influence +3
Win
February 21, 2026 Sergei Kovalev
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 13-14 years / Boys / Intermediate / -50 kg
Method Submission 00:47 0–0
Marginal influence +1
Win
February 21, 2026 Adam Dockal
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 13-14 years / Boys / Intermediate / -50 kg
Method Submission 00:29 0–0
Marginal influence +3
January 2026 No new matches · 4 left period Change -6 Rating 1,644

Rating-period composition

Rating matches
29 -4
Record
29–0 Previous month 33–0
Opponents
21 -1
Events
8 -1

4 older matches left the 12-month period: 4 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

December 2025 4 new matches Change +18 Rating 1,650

Rating-period composition

Rating matches
33 +4
Record
33–0 Previous month 29–0
Opponents
22 +4
Events
9 +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
December 20, 2025 Zdeněk Vlček
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Junior I (12-13 yrs) / -46 kg (2012,2013)
Method Submission 00:15 0–0
Marginal influence +6
Win
December 20, 2025 Václav Bednář
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Junior I (12-13 yrs) / -46 kg (2012,2013)
Method Submission 00:13 0–0
Marginal influence +3
Win
December 20, 2025 Šimon Janků
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Junior I (12-13 yrs) / -46 kg (2012,2013)
Method Submission 00:57 9–0
Marginal influence +1
Win
December 20, 2025 Mathias Mičian
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Junior I (12-13 yrs) / -46 kg (2012,2013)
Method Submission 00:32 7–0
Marginal influence +2
November 2025 3 new matches · 2 left period Change +3 Rating 1,632

Rating-period composition

Rating matches
29 +1
Record
29–0 Previous month 28–0
Opponents
18 0
Events
8 0

2 older matches left the 12-month period: 2 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
November 23, 2025 Matyáš Barák
ADCC Czech National Championship 2025 Boys Junior / 13-14 years / Intermediate / -45 kg
Method Submission 01:07 0–0
Marginal influence +10
Win
November 23, 2025 Martin Jurečka
ADCC Czech National Championship 2025 Boys Junior / 13-14 years / Intermediate / -45 kg
Method Submission 00:22 0–0
Marginal influence +1
Win
November 23, 2025 Šimon Dyntar
ADCC Czech National Championship 2025 Boys Junior / 13-14 years / Intermediate / -45 kg
Method Submission 01:59 0–0
Marginal influence +3
October 2025 2 new matches · 6 left period Change -18 Rating 1,629

Rating-period composition

Rating matches
28 -4
Record
28–0 Previous month 32–0
Opponents
18 -3
Events
8 -2

6 older matches left the 12-month period: 6 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
October 5, 2025 Jakub Komárek
AOM Cup Kids 3 Boys Gi / Yellow, Orange, Green / U15 (2012,2011,2010) / -48 kg
Method Submission 00:57 10–0
Marginal influence +2
Win
October 5, 2025 Jan Drahý
AOM Cup Kids 3 Boys Gi / Yellow, Orange, Green / U15 (2012,2011,2010) / -48 kg
Method Submission 00:17 0–0
Marginal influence +3
September 2025 5 new matches Change +37 Rating 1,647

Rating-period composition

Rating matches
32 +5
Record
32–0 Previous month 27–0
Opponents
21 +3
Events
10 +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 Unknown opponent
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / Yellow/orange/green belt / -45 kg
Method Submission 00:12 0–0
Marginal influence +6
Win
September 20, 2025 Adam Dockal
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / Yellow/orange/green belt / -45 kg
Method Submission 01:57 0–0
Marginal influence +5
Win
September 20, 2025 Boris Myakishev
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / Yellow/orange/green belt / -45 kg
Method Submission 01:14 0–0
Marginal influence +6
Win
September 20, 2025 Adam Dockal
TATAMY 16 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Intermediate / -45 kg
Method Submission 00:42 0–0
Marginal influence +4
Win
September 20, 2025 Adam Dockal
TATAMY 16 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Intermediate / -45 kg
Method Submission 00:26 0–0
Marginal influence +4
Relevant matches
25.1
Official ranking percentile
Top 1%
Performance
21.6 pp above expectation

25.1 weighted matches against 27 different opponents across 9 events

Weighted win rate
100.0%
Expected win rate
78.4%
Average opponent rating
1,334
Repeated-opponent share
27.0%
Network connectivity
80.9%