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CZ

Šimon Mareček

Choketopus gym

W–L
10–24
Won and lost rating-eligible matches in the past 12 months.
Gi
1,237
Rating based on Gi matches in the past 12 months.
No-Gi
1,285
Rating based on No-Gi matches in the past 12 months.
Current form
3–7
Results from the ten most recent rating-eligible matches.
Opponents
21
Unique opponents faced in rating-eligible matches in the past 12 months.

Scheduled

  1. GRIND 15 Kids

    CZ

    Gi / 10-12 years / Boy / -32 kg / Advanced No-Gi / 10-12 years / Boy / -32 kg / Advanced
    Unconfirmed

  2. 2026 AGF Prague Open

    CZ

    Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Yellow / Feather II (Up to 34.00 kg)
    Unconfirmed

Tournament history

Events

16
Events
Date Event Result Format Division
GRIND 14 Kids CZ · Gi · 10–12 yo · ≤36 kg ; No-Gi · 10–12 yo · ≤36 kg 2–6 W–L: Win / Loss GiNo-Gi
  • Place #5
  • Place #5
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) CZ · Gi · 7–9 yo · ≤32 kg ; No-Gi · 7–9 yo · ≤32 kg 5–4 W–L: Win / Loss GiNo-Gi
  • Place #4
  • No-Gi / 7-9 years / Mixed (4 - 9 years) / -32 kg / Mixed (4 - 9 years)
TATAMY 20: PRAGUE - KIDS (round robin) CZ · Gi · 7–9 yo · ≤32 kg 0–4 W–L: Win / Loss Gi
  • Place #9
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) CZ · Gi · 7–9 yo · ≤32 kg 3–3 W–L: Win / Loss Gi
  • Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
TATAMY 18 KIDS (No-GI and GI round robin) CZ · Gi · 7–9 yo · ≤32 kg 2–2 W–L: Win / Loss Gi
  • Place #7
TATAMY 17 KIDS (No-GI and GI round robin) CZ · Gi · 7–9 yo · ≤32 kg 1–3 W–L: Win / Loss Gi
  • Place #6
AOM Cup Kids 3 CZ · Gi · U9 · grey/yellow · ≤30 kg 0–4 W–L: Win / Loss Gi
  • Place #5
TATAMY 16 KIDS (No-GI and GI round robin) CZ · Gi · 7–9 yo · ≤32 kg 0–4 W–L: Win / Loss Gi
  • Place #6
GRIND 11 Kids (NO-GI & GI ROUND ROBIN) CZ · Gi · 7–9 yo · ≤32 kg 1–2 W–L: Win / Loss Gi
  • Kids Gi / 7-9 years / Mixed (4 - 9 years) / -32 kg / Mixed (4 - 9 years)
GRIND 9 NO-GI & GI ROUND ROBIN with kids CZ · Gi · 7–9 yo · ≤28 kg 1–5 W–L: Win / Loss Gi
  • Place #4
2025 AGF Prague Jiu Jitsu Championships CZ · Gi · 8–9 yo · yellow · ≤29.5 kg 0–2 W–L: Win / Loss Gi
  • Gi Kids / Boys / Kids (8 - 9 yrs) / Yellow / Feather I (Up to 29.50 kg)
TATAMY 13 KIDS (No-GI and GI round robin) CZ · Gi · 7–9 yo · ≤28 kg 1–3 W–L: Win / Loss Gi
  • Place #8
Pardubice Grappling Open vol.3 CZ · Gi · 6–8 yo · ≤28 kg 0–3 W–L: Win / Loss Gi
  • Place #4
TATAMY 12 (No-GI and GI round robin) CZ · Gi · 7–9 yo · ≤28 kg 0–4 W–L: Win / Loss Gi
  • Place #10
2024 Prague Open CZ · Gi · 10–11 yo · yellow · ≤29.5 kg 0–2 W–L: Win / Loss Gi
  • Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Yellow / Feather I (Up to 29.50 kg)
Pardubice Grappling Open vol.2 CZ · Gi · 7–10 yo · ≤28 kg 0–2 W–L: Win / Loss Gi
  • Place #4

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 · 3 left period Change -3 Rating 1,296

Rating-period composition

Rating matches
34 -3
Record
10–24 Previous month 11–26
Opponents
21 0
Events
7 -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.

July 2026 No new matches Change -1 Rating 1,299

Rating-period composition

Rating matches
37 0
Record
11–26 Previous month 11–26
Opponents
21 0
Events
8 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 +1 Rating 1,300

Rating-period composition

Rating matches
37 0
Record
11–26 Previous month 11–26
Opponents
21 0
Events
8 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 0 Rating 1,299

Rating-period composition

Rating matches
37 0
Record
11–26 Previous month 11–26
Opponents
21 0
Events
8 0

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

April 2026 8 new matches Change +80 Rating 1,299

Rating-period composition

Rating matches
37 +8
Record
11–26 Previous month 7–22
Opponents
21 +3
Events
8 +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 25, 2026 Kryštof Kubák
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) No-Gi / 7-9 years / Mixed (4 - 9 years) / -32 kg / Mixed (4 - 9 years)
Method Submission 01:40 0–0
Marginal influence +13
Win
April 25, 2026 Matyas Habich
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) No-Gi / 7-9 years / Mixed (4 - 9 years) / -32 kg / Mixed (4 - 9 years)
Method Decision 03:00 0–0
Marginal influence +18
Loss
April 25, 2026 Vojtěch Šatava
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) No-Gi / 7-9 years / Mixed (4 - 9 years) / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 2–7
Marginal influence +1
Loss
April 25, 2026 Filip Daruda
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 0–7
Marginal influence -3
Loss
April 25, 2026 Emma Netíková
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 2–7
Marginal influence -4
Win
April 25, 2026 Oliver Brychcin
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Submission 00:35 0–2
Marginal influence +11
Win
April 25, 2026 Matyas Habich
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Submission 02:26 0–0
Marginal influence +9
Loss
April 25, 2026 Filip Daruda
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 0–6
Marginal influence -3
March 2026 4 new matches · 8 left period Change -31 Rating 1,219

Rating-period composition

Rating matches
29 -4
Record
7–22 Previous month 8–25
Opponents
18 -1
Events
7 -1

8 older matches left the 12-month period: 1 won and 7 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
March 21, 2026 Adélka Bugnerová
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Submission 02:35 0–0
Marginal influence -12
Loss
March 21, 2026 Filip Daruda
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Points 03:00 0–7
Marginal influence -3
Loss
March 21, 2026 Šimon Huráb
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Points 03:00 0–7
Marginal influence -5
Loss
March 21, 2026 Vojtěch Šatava
TATAMY 20: PRAGUE - KIDS (round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Points 03:00 0–13
Marginal influence -4
February 2026 No new matches · 4 left period Change +7 Rating 1,250

Rating-period composition

Rating matches
33 -4
Record
8–25 Previous month 9–28
Opponents
19 -2
Events
8 -1

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

January 2026 6 new matches · 3 left period Change +64 Rating 1,243

Rating-period composition

Rating matches
37 +3
Record
9–28 Previous month 6–28
Opponents
21 +2
Events
9 0

3 older matches left the 12-month period: 0 won and 3 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
January 24, 2026 Matyas Habich
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 0–0
Marginal influence +9
Loss
January 24, 2026 Unknown opponent
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 0–5
Marginal influence -5
Win
January 24, 2026 Matyas Habich
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Submission 01:47 0–0
Marginal influence +9
Loss
January 24, 2026 Filip Daruda
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 0–11
Marginal influence -3
Win
January 24, 2026 Šimon Huráb
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 2–0
Marginal influence +11
Loss
January 24, 2026 Unknown opponent
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
Method Points 03:00 0–3
Marginal influence -5
December 2025 4 new matches · 4 left period Change +76 Rating 1,179

Rating-period composition

Rating matches
34 0
Record
6–28 Previous month 4–30
Opponents
19 -1
Events
9 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
December 6, 2025 Alexander Millner
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Submission 00:24 0–0
Marginal influence +9
Win
December 6, 2025 Daniil Prokopenko
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Points 03:00 8–0
Marginal influence +16
Loss
December 6, 2025 Alexander Polák
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Points 03:00 0–3
Marginal influence -6
Loss
December 6, 2025 Jiří Polzer
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Submission 01:00 0–0
Marginal influence -3
November 2025 4 new matches · 2 left period Change +33 Rating 1,103

Rating-period composition

Rating matches
34 +2
Record
4–30 Previous month 3–29
Opponents
20 0
Events
9 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 1, 2025 Unknown opponent
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Points 03:00 2–5
Marginal influence -5
Loss
November 1, 2025 Vojtěch Jána
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Submission 00:13 0–0
Marginal influence -1
Win
November 1, 2025 Mahulena Pirklová
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Decision 03:00 0–0
Marginal influence +15
Loss
November 1, 2025 Filip Daruda
TATAMY 17 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Submission 00:20 0–0
Marginal influence -3
October 2025 4 new matches · 2 left period Change -10 Rating 1,070

Rating-period composition

Rating matches
32 +2
Record
3–29 Previous month 3–27
Opponents
20 +2
Events
9 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
AOM Cup Kids 3 Boys Gi / Grey, Yellow / U09 (2017,2016) / -30 kg
Method Submission 02:58 0–8
Marginal influence -11
Loss
October 5, 2025 Sebastian Petrovický
AOM Cup Kids 3 Boys Gi / Grey, Yellow / U09 (2017,2016) / -30 kg
Method Submission 01:04 0–7
Marginal influence -6
Loss
October 5, 2025 Darek Pobuda
AOM Cup Kids 3 Boys Gi / Grey, Yellow / U09 (2017,2016) / -30 kg
Method Submission 01:01 0–4
Marginal influence -3
Loss
October 5, 2025 Vojtěch Jána
AOM Cup Kids 3 Boys Gi / Grey, Yellow / U09 (2017,2016) / -30 kg
Method Submission 00:15 0–0
Marginal influence -2
September 2025 4 new matches Change -22 Rating 1,080

Rating-period composition

Rating matches
30 +4
Record
3–27 Previous month 3–23
Opponents
18 +3
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
September 20, 2025 Mikołaj Jeznach
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Submission 01:33 0–0
Marginal influence -8
Loss
September 20, 2025 Unknown opponent
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Decision 03:00 0–0
Marginal influence -5
Loss
September 20, 2025 Illia Slyvka
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Decision 03:00 0–0
Marginal influence -8
Loss
September 20, 2025 Alex Martiník
TATAMY 16 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -32 kg
Method Submission 00:36 0–0
Marginal influence -5
Relevant matches
18.7
Official ranking percentile
Top 61%
Performance
3.3 pp below expectation

18.7 weighted matches against 21 different opponents across 7 events

Weighted win rate
31.9%
Expected win rate
35.2%
Average opponent rating
1,400
Repeated-opponent share
38.2%
Network connectivity
80.9%

Classification evidence

Why U12?

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

  • U12 3 event votes Selected outcome

Registrations and outcomes

GRIND 13 Kids (NO-GI & GI ROUND ROBIN)
U12 · Counts
No-Gi / 7-9 years / Mixed (4 - 9 years) / -32 kg / Mixed (4 - 9 years)
  • Competition age 10
Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
  • Competition age 10
TATAMY 20: PRAGUE - KIDS (round robin)
U12 · Counts
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Competition age 10
GRIND 12 Kids (NO-GI & GI ROUND ROBIN)
U12 · Counts
Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
  • Competition age 10
TATAMY 18 KIDS (No-GI and GI round robin)
Does not count
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Competition age 9
TATAMY 17 KIDS (No-GI and GI round robin)
Does not count
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Competition age 9
AOM Cup Kids 3
Does not count
Boys Gi / Grey, Yellow / U09 (2017,2016) / -30 kg
  • Competition age 9
  • Registered age: u10
  • Source category: u10
TATAMY 16 KIDS (No-GI and GI round robin)
Does not count
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Competition age 9

Classification evidence

Why ≤ 32 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

  • ≤ 32 kg 2 competition events Selected outcome
  • ≤ 36 kg 1 competition event

Registrations and outcomes

GRIND 13 Kids (NO-GI & GI ROUND ROBIN)
≤ 32 kg · Counts as a competition event
No-Gi / 7-9 years / Mixed (4 - 9 years) / -32 kg / Mixed (4 - 9 years)
  • Registered weight class: -32 kg
  • Source competition limit: -32 kg

3 matches in the rating period

GRIND 13 Kids (NO-GI & GI ROUND ROBIN)
≤ 32 kg · Counts as a competition event
Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
  • Registered weight class: -32 kg
  • Source competition limit: -32 kg

5 matches in the rating period

TATAMY 20: PRAGUE - KIDS (round robin)
≤ 32 kg · Counts as a competition event
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Registered weight class: -32 kg
  • Source competition limit: -32 kg

4 matches in the rating period

GRIND 12 Kids (NO-GI & GI ROUND ROBIN)
≤ 32 kg · Does not count
Gi / 7-9 years / Mixed / -32 kg / Mixed (4 - 9 years)
  • Registered weight class: -32 kg
  • Source competition limit: -32 kg

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

TATAMY 18 KIDS (No-GI and GI round robin)
≤ 32 kg · Does not count
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Registered weight class: -32 kg
  • Source competition limit: -32 kg

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

TATAMY 17 KIDS (No-GI and GI round robin)
≤ 32 kg · Does not count
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Registered weight class: -32 kg
  • Source competition limit: -32 kg

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

AOM Cup Kids 3
≤ 30 kg · Does not count
Boys Gi / Grey, Yellow / U09 (2017,2016) / -30 kg
  • Registered weight class: -30 kg
  • Source competition limit: -30 kg

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

TATAMY 16 KIDS (No-GI and GI round robin)
≤ 32 kg · Does not count
Kids / Gi / 7-9 years / Mix / All levels / -32 kg
  • Registered weight class: -32 kg
  • Source competition limit: -32 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

AOM Cup Kids 3
grey · Counts as a match
Boys Gi / Grey, Yellow / U09 (2017,2016) / -30 kg
  • Source belt category: grey

4 matches in the rating period