Lukas Čupak - Rating | TopBJJ Index

Calculation details

Rating breakdown for the past 12 months

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 -3 Rating 1,398

Rating-period composition

Rating matches: 14 0
Record: 10–4 Previous month 10–4
Opponents: 11 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 1,401

Rating-period composition

Rating matches: 14 0
Record: 10–4 Previous month 10–4
Opponents: 11 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 +2 Rating 1,401

Rating-period composition

Rating matches: 14 0
Record: 10–4 Previous month 10–4
Opponents: 11 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 Change -1 Rating 1,399

Rating-period composition

Rating matches: 14 0
Record: 10–4 Previous month 10–4
Opponents: 11 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.

April 2026 No new matches Change -2 Rating 1,400

Rating-period composition

Rating matches: 14 0
Record: 10–4 Previous month 10–4
Opponents: 11 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.

March 2026 3 new matches Change +62 Rating 1,402

Rating-period composition

Rating matches: 14 +3
Record: 10–4 Previous month 7–4
Opponents: 11 +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.

Win

March 21, 2026 Damian Trnka

TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Submission 00:50 3–0

Marginal influence +8

Win

March 21, 2026 Marcus ŠOUN

TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Submission 02:12 12–0

Marginal influence +18

Win

March 21, 2026 David Rosenbaum

TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Submission 00:47 6–0

Marginal influence +12

February 2026 5 new matches · 4 left period Change +74 Rating 1,340

Rating-period composition

Rating matches: 11 +1
Record: 7–4 Previous month 3–7
Opponents: 9 0
Events: 3 0

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.

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 21, 2026 Teodor Stankovic

TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Points 04:00 13–4

Marginal influence +8

Win

February 21, 2026 Teodor Stankovic

TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Submission 03:35 10–0

Marginal influence +8

Win

February 21, 2026 Lukáš Šabo

TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Points 04:00 10–0

Marginal influence +13

Win

February 21, 2026 Konrad Groß

TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Points 04:00 7–4

Marginal influence +19

Loss

February 21, 2026 Damian Trnka

TATAMY 19: Czech Open Championship (kids) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Disqualification 01:15 6–7

Marginal influence -18

January 2026 No new matches Change 0 Rating 1,266

Rating-period composition

Rating matches: 10 0
Record: 3–7 Previous month 3–7
Opponents: 9 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 2 new matches Change +39 Rating 1,266

Rating-period composition

Rating matches: 10 +2
Record: 3–7 Previous month 1–7
Opponents: 9 +1
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 Ionut Iovănică

TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / +65 kg

Method Points 04:00 6–0

Marginal influence +2

Win

December 6, 2025 Ionut Iovănică

TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / +65 kg

Method Submission 03:39 0–0

Marginal influence +2

November 2025 No new matches Change +6 Rating 1,227

Rating-period composition

Rating matches: 8 0
Record: 1–7 Previous month 1–7
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.

October 2025 No new matches Change -2 Rating 1,221

Rating-period composition

Rating matches: 8 0
Record: 1–7 Previous month 1–7
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.

September 2025 4 new matches Change +109 Rating 1,223

Rating-period composition

Rating matches: 8 +4
Record: 1–7 Previous month 0–4
Opponents: 8 +4
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.

Loss

September 20, 2025 Rudolf Nemcek

TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Points 04:00 2–4

Marginal influence -20

Win

September 20, 2025 Karel Kurka

TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Decision 04:00 0–0

Marginal influence +17

Loss

September 20, 2025 Oliver Martinec

TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Points 04:00 0–3

Marginal influence -22

Loss

September 20, 2025 Unknown opponent

TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / +65 kg

Method Submission 03:59 2–4

Marginal influence -16

Relevant matches: 8.8

Official ranking percentile: Top 28%

Performance: 19.9 pp above expectation

8.8 weighted matches against 11 different opponents across 4 events

Weighted win rate: 70.6%
Expected win rate: 50.7%
Average opponent rating: 1,304
Repeated-opponent share: 21.4%
Network connectivity: 80.9%