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Calculation details

Rating breakdown for the past 12 months

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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 +1 Rating 1,284

Rating-period composition

Rating matches
19 0
Record
6–13 Previous month 6–13
Opponents
15 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.

July 2026 No new matches Change -1 Rating 1,283

Rating-period composition

Rating matches
19 0
Record
6–13 Previous month 6–13
Opponents
15 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.

June 2026 No new matches Change -3 Rating 1,284

Rating-period composition

Rating matches
19 0
Record
6–13 Previous month 6–13
Opponents
15 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.

May 2026 1 new match · 1 left period Change -5 Rating 1,287

Rating-period composition

Rating matches
19 0
Record
6–13 Previous month 6–13
Opponents
15 0
Events
7 0

1 older matches left the 12-month period: 0 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.
Loss
May 2, 2026 Unknown opponent
Valachien Challenge Gi 2026 Boys 13-14 years / Yellow, orange, green belts / -50 kg
Method Submission 00:37 0–0
Marginal influence -7
April 2026 No new matches · 2 left period Change -10 Rating 1,292

Rating-period composition

Rating matches
19 -2
Record
6–13 Previous month 7–14
Opponents
15 -2
Events
7 -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.

March 2026 No new matches · 5 left period Change +21 Rating 1,302

Rating-period composition

Rating matches
21 -5
Record
7–14 Previous month 8–18
Opponents
17 -3
Events
8 -2

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

February 2026 2 new matches · 4 left period Change 0 Rating 1,281

Rating-period composition

Rating matches
26 -2
Record
8–18 Previous month 9–19
Opponents
20 -3
Events
10 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
February 21, 2026 Nikolas Soudný
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Points 04:00 0–4
Marginal influence -7
Win
February 21, 2026 Ludvík Šandor
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Points 04:00 3–0
Marginal influence +12
January 2026 6 new matches Change +12 Rating 1,281

Rating-period composition

Rating matches
28 +6
Record
9–19 Previous month 7–15
Opponents
23 +4
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.
Loss
January 24, 2026 Nikolas Soudný
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -45 kg / Beginner
Method Submission 00:38 0–0
Marginal influence -6
Win
January 24, 2026 Samuel Plechatý
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -45 kg / Beginner
Method Submission 03:49 0–0
Marginal influence +15
Win
January 24, 2026 Vojtěch Tesařík
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -45 kg / Beginner
Method Points 04:00 3–0
Marginal influence +11
Loss
January 24, 2026 Alexandr Rác
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -45 kg / Beginner
Method Points 04:00 2–4
Marginal influence -11
Loss
January 24, 2026 Tom Pavek
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) No-Gi / 13-14 years / Boy / -45 kg / Beginners
Method Submission 01:12 0–0
Marginal influence -10
Loss
January 24, 2026 Nikolas Soudný
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) No-Gi / 13-14 years / Boy / -45 kg / Beginners
Method Submission 00:41 0–0
Marginal influence -8
December 2025 2 new matches Change -13 Rating 1,269

Rating-period composition

Rating matches
22 +2
Record
7–15 Previous month 7–13
Opponents
19 +2
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.
Loss
December 6, 2025 Ludvík Šandor
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Submission 03:31 0–0
Marginal influence -14
Loss
December 6, 2025 Václav Bednář
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Submission 01:16 0–0
Marginal influence -12
November 2025 6 new matches Change +52 Rating 1,282

Rating-period composition

Rating matches
20 +6
Record
7–13 Previous month 5–9
Opponents
17 +5
Events
8 +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.
Loss
November 23, 2025 Unknown opponent
ADCC Czech National Championship 2025 Boys Junior / 13-14 years / Intermediate / -45 kg
Method Submission 00:11 0–0
Marginal influence -6
Loss
November 23, 2025 Jan Kubín
ADCC Czech National Championship 2025 Boys Junior / 13-14 years / Intermediate / -45 kg
Method Submission 00:22 0–0
Marginal influence -2
Loss
November 1, 2025 Vlad Chonka
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Submission 02:24 0–0
Marginal influence -7
Loss
November 1, 2025 Matvii Pryhodko
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Submission 02:22 0–0
Marginal influence -6
Win
November 1, 2025 Unknown opponent
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Points 04:00 12–0
Marginal influence +13
Win
November 1, 2025 Vlad Chonka
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -45 kg
Method Decision 04:00 0–0
Marginal influence +12
October 2025 2 new matches Change +23 Rating 1,230

Rating-period composition

Rating matches
14 +2
Record
5–9 Previous month 4–8
Opponents
12 +1
Events
6 +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
October 5, 2025 Tomáš Mitlehner
AOM Cup Kids 3 Boys Gi / white, Grey / U15 (2012,2011,2010) / -44 kg
Method Points 04:00 8–0
Marginal influence +15
Loss
October 5, 2025 Zdeněk Vlček
AOM Cup Kids 3 Boys Gi / white, Grey / U15 (2012,2011,2010) / -44 kg
Method Submission 01:32 0–0
Marginal influence -4
September 2025 No new matches Change +2 Rating 1,207

Rating-period composition

Rating matches
12 0
Record
4–8 Previous month 4–8
Opponents
11 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
13.7
Official ranking percentile
Top 66%
Performance
10.5 pp below expectation

13.7 weighted matches against 15 different opponents across 7 events

Weighted win rate
30.1%
Expected win rate
40.6%
Average opponent rating
1,332
Repeated-opponent share
21.1%
Network connectivity
80.9%