Jan Kučera - 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 0 Rating 1,280

Rating-period composition

Rating matches: 11 0
Record: 5–6 Previous month 5–6
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.

July 2026 No new matches Change 0 Rating 1,280

Rating-period composition

Rating matches: 11 0
Record: 5–6 Previous month 5–6
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.

June 2026 No new matches Change 0 Rating 1,280

Rating-period composition

Rating matches: 11 0
Record: 5–6 Previous month 5–6
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.

May 2026 2 new matches Change +69 Rating 1,280

Rating-period composition

Rating matches: 11 +2
Record: 5–6 Previous month 3–6
Opponents: 11 +2
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

May 30, 2026 Adam Drabeš

2026 AGF Czech Championships No Gi Kids Challenger / Boys / White Challenger / Heavy I (Up to 72.60 kg)

Method Submission 00:16 0–0

Marginal influence +30

Win

May 30, 2026 Jakub Kučera

2026 AGF Czech Championships No Gi Kids Challenger / Boys / White Challenger / Heavy I (Up to 72.60 kg)

Method Submission 01:06 6–2

Marginal influence +22

April 2026 2 new matches Change +36 Rating 1,211

Rating-period composition

Rating matches: 9 +2
Record: 3–6 Previous month 2–5
Opponents: 9 +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

April 11, 2026 Robin Tribula

Pardubice Grappling Open vol.6 Boys Junior No-GI / 15-17 years / -75 kg / Beginner

Method Points 05:00 2–0

Marginal influence +21

Loss

April 11, 2026 Leoš Píša

Pardubice Grappling Open vol.6 Boys Junior No-GI / 15-17 years / -75 kg / Beginner

Method Submission 00:57 0–0

Marginal influence -17

March 2026 No new matches Change +1 Rating 1,175

Rating-period composition

Rating matches: 7 0
Record: 2–5 Previous month 2–5
Opponents: 7 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.

February 2026 No new matches Change +1 Rating 1,174

Rating-period composition

Rating matches: 7 0
Record: 2–5 Previous month 2–5
Opponents: 7 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.

January 2026 No new matches Change -2 Rating 1,173

Rating-period composition

Rating matches: 7 0
Record: 2–5 Previous month 2–5
Opponents: 7 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 No new matches Change -3 Rating 1,175

Rating-period composition

Rating matches: 7 0
Record: 2–5 Previous month 2–5
Opponents: 7 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.

November 2025 2 new matches · 2 left period Change +5 Rating 1,178

Rating-period composition

Rating matches: 7 0
Record: 2–5 Previous month 2–5
Opponents: 7 0
Events: 3 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.

Loss

November 23, 2025 Filip Šťastný

ADCC Czech National Championship 2025 Boys Junior / 15-17 years / Beginner / -70 kg

Method Submission 02:47 0–0

Marginal influence -23

Loss

November 23, 2025 Martin Rokoš

ADCC Czech National Championship 2025 Boys Junior / 15-17 years / Beginner / -70 kg

Method Submission 02:38 0–0

Marginal influence -23

October 2025 5 new matches · 2 left period Change +45 Rating 1,173

Rating-period composition

Rating matches: 7 +3
Record: 2–5 Previous month 1–3
Opponents: 7 +3
Events: 3 +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.

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

October 25, 2025 Unknown opponent

N-GEN Kids BJJ Tournament #3 Boys No-Gi / All belt / Teen (14-15yrs) / +65 kg (2010,2011)

Method Submission 03:22 0–31

Marginal influence -16

Loss

October 25, 2025 Eldar Kukharenko

N-GEN Kids BJJ Tournament #3 Boys No-Gi / All belt / Teen (14-15yrs) / +65 kg (2010,2011)

Method Submission 00:30 0–2

Marginal influence -16

Loss

October 25, 2025 Levko Opáth

N-GEN Kids BJJ Tournament #3 Boys No-Gi / All belt / Teen (14-15yrs) / +65 kg (2010,2011)

Method Submission 02:05 2–6

Marginal influence -25

Win

October 5, 2025 Samuel Lux

AOM Cup Kids 3 Boys NoGi / U15 (2012,2011,2010) / -69 kg

Method Submission 00:19 6–0

Marginal influence +25

Win

October 5, 2025 Marek Lukeš

AOM Cup Kids 3 Boys NoGi / U15 (2012,2011,2010) / -69 kg

Method Submission 00:11 2–0

Marginal influence +15

September 2025 No new matches Change -3 Rating 1,128

Rating-period composition

Rating matches: 4 0
Record: 1–3 Previous month 1–3
Opponents: 4 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.

Relevant matches: 9

Official ranking percentile: -

Performance: 1.2 pp below expectation

9 weighted matches against 11 different opponents across 5 events

Weighted win rate: 45.0%
Expected win rate: 46.3%
Average opponent rating: 1,264
Repeated-opponent share: 0.0%
Network connectivity: 80.9%