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CZ

David Řezníček

Samba Jiu Jitsu

W–L
8–11
Won and lost rating-eligible matches in the past 12 months.
Gi
1,274
Rating based on Gi matches in the past 12 months.
No-Gi
1,293
Rating based on No-Gi matches in the past 12 months.
Current form
4–6
Results from the ten most recent rating-eligible matches.
Opponents
12
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
0
Silver
2
Bronze
2
Total medals
4
Events with results
5

Full career record

Wins
9
Losses
19
Matches
28
Win rate
32.1%

Ways of winning

Submission
6
Points
1
Decision
1
Disqualification
0

Personal records

Longest winning streak
2
Longest submission streak
2

Recent recorded placements

  2. N-GEN Kids BJJ Tournament #4

    CZ Event record 3–2

    • Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
    • Boys Gi / White grey / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
1
Unique opponents
12
Distinct events
4

Ways of winning

  • Submission 6 75%
  • Points 1 13%
  • Decision 1 13%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1274
Record
3–4
Win rate
43%
Submission share
100%

No-Gi

Rating
1293
Record
5–7
Win rate
42%
Submission share
60%

Win quality

Grouped by pre-match win probability. This provides context and does not award an extra rating bonus.

As underdog 0–0 Less than 35% expected win probability before the match.
Even match 0–0 Between 35% and 65% expected win probability before the match.
As favourite 0–0 More than 65% expected win probability before the match.

Development

Rating and development

The same published rating, supported by trend, opponent strength and evidence quality.

Current rating
1,348
Change over 90 days
-15
Highest rating in 12 months
1,363
Performance versus expectation
-0.8 pp
Schedule strength
Top 5%
Average opponent rating
1,421
Weighted win rate
44%
Expected win rate
44%
Repeat-opponent share
37%
Effective evidence
14.2
Confidence
93/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 4–13 4–13 across 17 rematches against 7 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #724 Tobiáš Jendrisek · N-GEN Kids BJJ Tournament #4 Sub 01:23 0–0
  2. #1494 Michal Hrnčár · TATAMY 16 KIDS (No-GI and GI round robin) Sub 01:03 0–0 Earlier · Pts 3–0 September 20, 2025 · TATAMY 16 KIDS (No-GI and GI round robin)
  3. #1656 Edita Tichá · ADCC Czech National Championship 2025 Sub 02:47 0–0
  4. #2183 Antonin Tůma · N-GEN Kids BJJ Tournament #4 Sub 00:39 0–0 Earlier · Sub 00:20 0–0 March 22, 2026 · N-GEN Kids BJJ Tournament #4
  5. #2612 Lukáš Skoumal · TATAMY 16 KIDS (No-GI and GI round robin) Sub 01:26 0–0

Full career

  1. #724 Tobiáš Jendrisek · N-GEN Kids BJJ Tournament #4 Sub 01:23 0–0
  2. #1494 Michal Hrnčár · TATAMY 16 KIDS (No-GI and GI round robin) Sub 01:03 0–0 Earlier · Pts 3–0 September 20, 2025 · TATAMY 16 KIDS (No-GI and GI round robin)
  3. #1656 Edita Tichá · ADCC Czech National Championship 2025 Sub 02:47 0–0
  4. #2183 Antonin Tůma · N-GEN Kids BJJ Tournament #4 Sub 00:39 0–0 Earlier · Sub 00:20 0–0 March 22, 2026 · N-GEN Kids BJJ Tournament #4
  5. #2612 Lukáš Skoumal · TATAMY 16 KIDS (No-GI and GI round robin) Sub 01:26 0–0

Rivals

Opponent Head-to-head record Matches
Darek Pobuda 0–3 3
Antonin Tůma 2–0 2

Around this athlete

Athlete Rank Rating
Teodor Stankovic #1336 1,348
David Řezníček #1337 1,348
Vladimír Lengál #1338 1,347

Scheduled

Recent tournaments

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 1,348

Rating-period composition

Rating matches
19 0
Record
8–11 Previous month 8–11
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.

July 2026 No new matches Change 0 Rating 1,348

Rating-period composition

Rating matches
19 0
Record
8–11 Previous month 8–11
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.

June 2026 5 new matches Change -19 Rating 1,348

Rating-period composition

Rating matches
19 +5
Record
8–11 Previous month 7–7
Opponents
12 +3
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
June 20, 2026 Alexander Polák
Open Czech championship submission only 2026 GI Litle Kids Boy 7-9 years / -32kg / Grey belt
Method Decision 03:10 0–0
Marginal influence -10
Loss
June 20, 2026 Vojtěch Šatava
Open Czech championship submission only 2026 GI Litle Kids Boy 7-9 years / -32kg / Grey belt
Method Decision 03:44 0–0
Marginal influence -6
Win
June 20, 2026 Michal Šabata
Open Czech championship submission only 2026 NOGI Litle Kids Boy 7-9 years / -32kg
Method Decision 03:04 0–0
Marginal influence +10
Loss
June 20, 2026 Alexander Polák
Open Czech championship submission only 2026 NOGI Litle Kids Boy 7-9 years / -32kg
Method Submission 02:40 0–0
Marginal influence -11
Loss
June 20, 2026 Vojtěch Šatava
Open Czech championship submission only 2026 NOGI Litle Kids Boy 7-9 years / -32kg
Method Submission 01:57 0–0
Marginal influence -9
May 2026 No new matches Change -1 Rating 1,367

Rating-period composition

Rating matches
14 0
Record
7–7 Previous month 7–7
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.

April 2026 No new matches Change +5 Rating 1,368

Rating-period composition

Rating matches
14 0
Record
7–7 Previous month 7–7
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.

March 2026 5 new matches Change +56 Rating 1,363

Rating-period composition

Rating matches
14 +5
Record
7–7 Previous month 4–5
Opponents
9 +2
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
March 22, 2026 Antonin Tůma
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
Method Submission 00:39 0–0
Marginal influence +10
Loss
March 22, 2026 Darek Pobuda
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
Method Points 03:00 0–2
Marginal influence -4
Win
March 22, 2026 Antonin Tůma
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
Method Submission 00:20 0–0
Marginal influence +9
Loss
March 22, 2026 Darek Pobuda
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
Method Submission 01:12 0–5
Marginal influence -4
Win
March 22, 2026 Tobiáš Jendrisek
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
Method Submission 01:23 0–0
Marginal influence +13
February 2026 No new matches Change +1 Rating 1,307

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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.

January 2026 No new matches Change -2 Rating 1,306

Rating-period composition

Rating matches
9 0
Record
4–5 Previous month 4–5
Opponents
7 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.

December 2025 No new matches · 7 left period Change +41 Rating 1,308

Rating-period composition

Rating matches
9 -7
Record
4–5 Previous month 4–12
Opponents
7 -4
Events
2 -1

7 older matches left the 12-month period: 0 won and 7 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

November 2025 2 new matches Change +5 Rating 1,267

Rating-period composition

Rating matches
16 +2
Record
4–12 Previous month 3–11
Opponents
11 +2
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
November 23, 2025 Edita Tichá
ADCC Czech National Championship 2025 Boys Junior / 7-8 years / Intermediate / -28 kg
Method Submission 02:47 0–0
Marginal influence +11
Loss
November 23, 2025 Darek Pobuda
ADCC Czech National Championship 2025 Boys Junior / 7-8 years / Intermediate / -28 kg
Method Submission 01:06 0–0
Marginal influence -5
October 2025 No new matches Change +1 Rating 1,262

Rating-period composition

Rating matches
14 0
Record
3–11 Previous month 3–11
Opponents
9 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 7 new matches Change +65 Rating 1,261

Rating-period composition

Rating matches
14 +7
Record
3–11 Previous month 0–7
Opponents
9 +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 Unknown opponent
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:24 0–0
Marginal influence -6
Win
September 20, 2025 Michal Hrnčár
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 01:03 0–0
Marginal influence +10
Win
September 20, 2025 Lukáš Skoumal
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 01:26 0–0
Marginal influence +11
Win
September 20, 2025 Michal Hrnčár
TATAMY 16 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Points 03:00 3–0
Marginal influence +13
Loss
September 20, 2025 Unknown opponent
TATAMY 16 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:24 0–0
Marginal influence -12
Loss
September 20, 2025 Vojtěch Jána
TATAMY 16 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:34 0–0
Marginal influence -8
Loss
September 20, 2025 Ivan Avramenko
TATAMY 16 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:35 0–0
Marginal influence -10
Relevant matches
14.2
Official ranking percentile
Top 44%
Performance
0.8 pp below expectation

14.2 weighted matches against 12 different opponents across 4 events

Weighted win rate
43.7%
Expected win rate
44.5%
Average opponent rating
1,421
Repeated-opponent share
36.8%
Network connectivity
80.9%

Classification evidence

Why U10?

Within the published period from 2025-09-01 through 2026-08-31, only competition ages recorded at events in the calculation year determine this outcome, with at most one vote per event. Without such an age, the most recent unambiguous earlier competition age is projected to the calculation year; bracket evidence is the final fallback. The newest evidence breaks a tie.

Evidence outcome

  • U10 2 event votes Selected outcome

Registrations and outcomes

Open Czech championship submission only 2026
U10 · Counts
NOGI Litle Kids Boy 7-9 years / -32kg
  • Competition age 9
GI Litle Kids Boy 7-9 years / -32kg / Grey belt
  • Competition age 9
N-GEN Kids BJJ Tournament #4
U10 · Counts
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
  • Competition age 9
Boys Gi / White grey / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
  • Competition age 9
ADCC Czech National Championship 2025
Does not count
Boys Junior / 7-8 years / Intermediate / -28 kg
  • Competition age 8
TATAMY 16 KIDS (No-GI and GI round robin)
Does not count
Kids / Gi / 7-9 years / Mix / All levels / -28 kg
  • Competition age 8
Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
  • Competition age 8

Classification evidence

Why ≤ 28 kg?

This outcome uses at most one unambiguous upper weight limit per completed ranking event from 2025-09-01 through 2026-08-31. Only the three most recent eligible events are considered, and the lightest verified upper limit is selected. A higher division is not treated as measured body weight.

Evidence outcome

  • ≤ 28 kg 1 competition event Selected outcome
  • ≤ 29 kg 1 competition event
  • ≤ 32 kg 1 competition event

Registrations and outcomes

Open Czech championship submission only 2026
≤ 32 kg · Counts as a competition event
NOGI Litle Kids Boy 7-9 years / -32kg
  • Registered weight class: -32kg
  • Source competition limit: -32kg

3 matches in the rating period

Open Czech championship submission only 2026
≤ 32 kg · Counts as a competition event
GI Litle Kids Boy 7-9 years / -32kg / Grey belt
  • Registered weight class: -32kg
  • Source competition limit: -32kg

2 matches in the rating period

N-GEN Kids BJJ Tournament #4
≤ 29 kg · Counts as a competition event
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
  • Registered weight class: -29 kg (2017,2018,2019)
  • Source competition limit: -29 kg (2017,2018,2019)

3 matches in the rating period

N-GEN Kids BJJ Tournament #4
≤ 29 kg · Counts as a competition event
Boys Gi / White grey / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
  • Registered weight class: -29 kg (2017,2018,2019)
  • Source competition limit: -29 kg (2017,2018,2019)

2 matches in the rating period

ADCC Czech National Championship 2025
≤ 28 kg · Counts as a competition event
Boys Junior / 7-8 years / Intermediate / -28 kg
  • Registered weight class: -28 kg
  • Source competition limit: -28 kg

2 matches in the rating period

TATAMY 16 KIDS (No-GI and GI round robin)
≤ 28 kg · Does not count
Kids / Gi / 7-9 years / Mix / All levels / -28 kg
  • Registered weight class: -28 kg
  • Source competition limit: -28 kg

3 matches in the rating period · outside the three most recent unambiguous events

TATAMY 16 KIDS (No-GI and GI round robin)
≤ 28 kg · Does not count
Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
  • Registered weight class: -28 kg
  • Source competition limit: -28 kg

4 matches in the rating period · outside the three most recent unambiguous events

Classification evidence

Why Grey?

This outcome uses the belt category of every rating-eligible match from 2025-09-01 through 2026-08-31. The most-fought category is selected; the newest evidence breaks a tie.

Evidence outcome

  • grey 4 matches in the rating period Selected outcome

Registrations and outcomes

Open Czech championship submission only 2026
grey · Counts as a match
GI Litle Kids Boy 7-9 years / -32kg / Grey belt
  • Source belt category: grey

2 matches in the rating period

N-GEN Kids BJJ Tournament #4
grey · Counts as a match
Boys Gi / White grey / Pee Wee (7-9 yrs) / -29 kg (2017,2018,2019)
  • Source belt category: grey

2 matches in the rating period