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 Change 0 Rating 1,385

Rating-period composition

Rating matches
21 0
Record
12–9 Previous month 12–9
Opponents
16 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.

July 2026 No new matches Change -2 Rating 1,385

Rating-period composition

Rating matches
21 0
Record
12–9 Previous month 12–9
Opponents
16 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.

June 2026 4 new matches Change +42 Rating 1,387

Rating-period composition

Rating matches
21 +4
Record
12–9 Previous month 8–9
Opponents
16 +3
Events
5 +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
June 20, 2026 Michal Chuda
Open Czech championship submission only 2026 NOGI - Kids boys 10-13y / -36 kg / Beginner (<2 years of training)
Method Submission 00:31 0–0
Marginal influence +7
Win
June 20, 2026 Michael Goroĺ Dudy
Open Czech championship submission only 2026 NOGI - Kids boys 10-13y / -36 kg / Beginner (<2 years of training)
Method Submission 02:26 0–0
Marginal influence +9
Win
Open Czech championship submission only 2026 GI - Kids girls 10-13y / -36 kg / Grey belt
Method Submission 02:57 0–0
Marginal influence +8
Win
June 20, 2026 Unknown opponent
Open Czech championship submission only 2026 GI - Kids girls 10-13y / -36 kg / Grey belt
Method Submission 01:27 0–0
Marginal influence +6
May 2026 4 new matches Change +88 Rating 1,345

Rating-period composition

Rating matches
17 +4
Record
8–9 Previous month 4–9
Opponents
13 +4
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.
Win
May 30, 2026 Maksym Kalynych
2026 AGF Czech Championships No Gi Kids / Mixed / Pre Teen (10 - 11 yrs) / Gray / Feather III (Up to 38.60 kg)
Method Points 03:00 8–5
Marginal influence +15
Win
2026 AGF Czech Championships No Gi Kids / Mixed / Pre Teen (10 - 11 yrs) / Gray / Feather III (Up to 38.60 kg)
Method Points 03:00 13–1
Marginal influence +10
Win
May 30, 2026 Unknown opponent
2026 AGF Czech Championships Gi Kids / Girls / Pre Teen (10 - 11 yrs) / Gray / Feather III (Up to 38.60 kg)
Method Points 02:00 6–0
Marginal influence +6
Win
2026 AGF Czech Championships Gi Kids / Girls / Pre Teen (10 - 11 yrs) / Gray / Feather III (Up to 38.60 kg)
Method Points 02:00 5–2
Marginal influence +11
April 2026 No new matches · 3 left period Change -3 Rating 1,257

Rating-period composition

Rating matches
13 -3
Record
4–9 Previous month 5–11
Opponents
9 -3
Events
3 -1

3 older matches left the 12-month period: 1 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

March 2026 No new matches Change -8 Rating 1,260

Rating-period composition

Rating matches
16 0
Record
5–11 Previous month 5–11
Opponents
12 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 4 new matches Change -23 Rating 1,268

Rating-period composition

Rating matches
16 +4
Record
5–11 Previous month 5–7
Opponents
12 +2
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
February 21, 2026 Zoe Horvatova
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 10-12 years / Girls / Beginner / -36 kg
Method Points 04:00 0–6
Marginal influence -17
Loss
February 21, 2026 Adéla Gutov Jeličová
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 10-12 years / Girls / Beginner / -36 kg
Method Submission 02:30 0–0
Marginal influence -4
Loss
February 21, 2026 Liliana Rduchová
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 10-12 years / Girls / White/grey belt / -36 kg
Method Submission 00:48 0–9
Marginal influence -10
Loss
February 21, 2026 Liliana Rduchová
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 10-12 years / Girls / White/grey belt / -36 kg
Method Points 04:00 0–15
Marginal influence -10
January 2026 No new matches Change +3 Rating 1,291

Rating-period composition

Rating matches
12 0
Record
5–7 Previous month 5–7
Opponents
10 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 7 new matches Change +61 Rating 1,288

Rating-period composition

Rating matches
12 +7
Record
5–7 Previous month 2–3
Opponents
10 +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
December 6, 2025 Ivana Slavikova
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Girls / White/grey belt / -32 kg
Method Points 04:00 4–0
Marginal influence +12
Loss
December 6, 2025 Zuzana Dornakova
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Girls / White/grey belt / -32 kg
Method Decision 04:00 0–0
Marginal influence -10
Loss
December 6, 2025 Ria Očadlíková
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Girls / White/grey belt / -32 kg
Method Decision 04:00 0–0
Marginal influence -11
Win
December 6, 2025 Adela Schwarc
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Girls / White/grey belt / -36 kg
Method Submission 02:58 5–0
Marginal influence +4
Win
December 6, 2025 Adela Schwarc
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 10-12 years / Girls / White/grey belt / -36 kg
Method Points 04:00 4–3
Marginal influence +4
Loss
December 6, 2025 Adéla Gutov Jeličová
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 10-12 years / Girls / Beginner / -36 kg
Method Submission 00:23 0–0
Marginal influence -4
Loss
December 6, 2025 Adéla Gutov Jeličová
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 10-12 years / Girls / Beginner / -36 kg
Method Submission 00:20 0–0
Marginal influence -4
November 2025 2 new matches Change +36 Rating 1,227

Rating-period composition

Rating matches
5 +2
Record
2–3 Previous month 1–2
Opponents
5 +2
Events
2 +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
November 23, 2025 Ondrej Kolman
ADCC Czech National Championship 2025 Boys Junior / 9-10 years / Intermediate / -36 kg
Method Decision 04:00 2–2
Marginal influence +9
Loss
November 23, 2025 Alex Janda
ADCC Czech National Championship 2025 Boys Junior / 9-10 years / Intermediate / -36 kg
Method Submission 01:17 0–0
Marginal influence -15
October 2025 No new matches Change +7 Rating 1,191

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
3 0
Events
1 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 +1 Rating 1,184

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
3 0
Events
1 0

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

Relevant matches
14.4
Official ranking percentile
Top 32%
Performance
4.6 pp above expectation

14.4 weighted matches against 16 different opponents across 5 events

Weighted win rate
59.8%
Expected win rate
55.2%
Average opponent rating
1,320
Repeated-opponent share
23.8%
Network connectivity
80.9%