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Samuel Cetkovsky

Arte Suave Martin

W–L
17–22
Won and lost rating-eligible matches in the past 12 months.
Gi
1,234
Rating based on Gi matches in the past 12 months.
No-Gi
1,314
Rating based on No-Gi matches in the past 12 months.
Current form
7–3
Results from the ten most recent rating-eligible matches.
Opponents
26
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

8
Events
Date Event Result Format Division
XV. REBEL BJJ CUP CZ · Gi · 7–9 yo · white/grey · ≤26 kg ; No-Gi · 7–9 yo · ≤26 kg 4–1 W–L: Win / Loss GiNo-Gi
  • Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
N-GEN Kids BJJ Tournament #4 CZ · Gi · 10–11 yo · white/grey · ≤30 kg ; No-Gi · 7–9 yo · ≤26 kg 4–2 W–L: Win / Loss GiNo-Gi
  • Boys Gi / White grey / Junior (10-11yrs) / -30 kg (2015,2016)
  • Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
TATAMY 19: Czech Open Championship (kids) CZ · Gi · 7–9 yo · ≤28 kg ; No-Gi · 7–9 yo · ≤28 kg 0–8 W–L: Win / Loss GiNo-Gi
  • Place #16
  • Place #15
XIII. GrappleXmas BJJ Cup CZ · Gi · 7–9 yo · white/grey · ≤26 kg ; No-Gi · 7–9 yo · ≤26 kg 5–2 W–L: Win / Loss GiNo-Gi
  • Place #5
  • Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
TATAMY 18 KIDS (No-GI and GI round robin) CZ · Gi · 7–9 yo · ≤28 kg ; No-Gi · 7–9 yo · ≤28 kg 1–7 W–L: Win / Loss GiNo-Gi
  • Place #11
  • Place #10
N-GEN Kids BJJ Tournament #3 CZ · Gi · 7–9 yo · white/grey · ≤26 kg ; No-Gi · 7–9 yo · ≤26 kg 4–4 W–L: Win / Loss GiNo-Gi
  • Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
N-GEN Kids BJJ Tournament #2 CZ · Gi · 7–9 yo · white/grey · ≤23 kg 2–2 W–L: Win / Loss Gi
  • Place #4
TATAMY 12 (No-GI and GI round robin) CZ · Gi · 7–9 yo · ≤24 kg 2–2 W–L: Win / Loss Gi
  • Place #8

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 1,330

Rating-period composition

Rating matches
39 0
Record
17–22 Previous month 17–22
Opponents
26 0
Events
6 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 1,330

Rating-period composition

Rating matches
39 0
Record
17–22 Previous month 17–22
Opponents
26 0
Events
6 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 1,330

Rating-period composition

Rating matches
39 0
Record
17–22 Previous month 17–22
Opponents
26 0
Events
6 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 · 4 left period Change -1 Rating 1,327

Rating-period composition

Rating matches
39 -4
Record
17–22 Previous month 19–24
Opponents
26 -1
Events
6 -1

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.

April 2026 5 new matches Change +31 Rating 1,328

Rating-period composition

Rating matches
43 +5
Record
19–24 Previous month 15–23
Opponents
27 +3
Events
7 +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 18, 2026 Adam Klega
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 01:15 6–0
Marginal influence +8
Win
April 18, 2026 Tomáš Frydrych
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Points 03:00 4–0
Marginal influence +5
Win
April 18, 2026 Alex Mráz
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 00:14 6–0
Marginal influence +5
Win
April 18, 2026 Adam Klega
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 01:17 6–0
Marginal influence +7
Loss
April 18, 2026 Matyáš Tichý
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Points 03:00 0–2
Marginal influence -8
March 2026 6 new matches Change +29 Rating 1,297

Rating-period composition

Rating matches
38 +6
Record
15–23 Previous month 11–21
Opponents
24 +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
March 22, 2026 Jan Šprla
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 00:56 5–0
Marginal influence +6
Win
March 22, 2026 Tomáš Frydrych
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 01:14 4–0
Marginal influence +5
Loss
March 22, 2026 Maxim Krmela
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 00:37 0–0
Marginal influence -1
Win
March 22, 2026 Tadeáš Bábíček
N-GEN Kids BJJ Tournament #4 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Points 03:00 5–0
Marginal influence +8
Loss
March 22, 2026 Tobiáš Jendrisek
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Junior (10-11yrs) / -30 kg (2015,2016)
Method Points 03:00 2–8
Marginal influence -3
Win
March 22, 2026 Filip Martinec
N-GEN Kids BJJ Tournament #4 Boys Gi / White grey / Junior (10-11yrs) / -30 kg (2015,2016)
Method Submission 00:52 2–6
Marginal influence +6
February 2026 8 new matches Change -48 Rating 1,268

Rating-period composition

Rating matches
32 +8
Record
11–21 Previous month 11–13
Opponents
23 +7
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.
Loss
February 21, 2026 Nina Fuňková
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:38 0–0
Marginal influence -11
Loss
February 21, 2026 Jakub Onger
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:32 2–0
Marginal influence -4
Loss
February 21, 2026 Tobiáš Jendrisek
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 01:33 2–6
Marginal influence -3
Loss
February 21, 2026 Lukas Saracinov
TATAMY 19: Czech Open Championship (kids) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Points 03:00 0–4
Marginal influence -6
Loss
February 21, 2026 Davyd Hyshpil
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:13 0–0
Marginal influence -4
Loss
February 21, 2026 Nina Fuňková
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:26 0–0
Marginal influence -9
Loss
February 21, 2026 Alexey Sychov
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Points 03:00 0–2
Marginal influence -5
Loss
February 21, 2026 Ryan Skyba
TATAMY 19: Czech Open Championship (kids) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 01:02 0–0
Marginal influence -6
January 2026 No new matches Change -2 Rating 1,316

Rating-period composition

Rating matches
24 0
Record
11–13 Previous month 11–13
Opponents
16 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.

December 2025 13 new matches · 4 left period Change +3 Rating 1,318

Rating-period composition

Rating matches
24 +9
Record
11–13 Previous month 7–8
Opponents
16 +4
Events
4 +1

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.
Win
December 20, 2025 Antonin Tůma
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 02:06 2–2
Marginal influence +7
Win
December 20, 2025 Dominik Bátrla
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 01:25 14–0
Marginal influence +7
Win
December 20, 2025 Tomáš Frydrych
XIII. GrappleXmas BJJ Cup Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 01:38 2–2
Marginal influence +5
Loss
December 20, 2025 Maxim Krmela
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 00:35 0–2
Marginal influence -4
Win
December 20, 2025 Dominik Bátrla
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 01:44 8–2
Marginal influence +8
Loss
December 20, 2025 Tomáš Frydrych
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Points 03:00 0–4
Marginal influence -6
Win
December 20, 2025 Filip Martinec
XIII. GrappleXmas BJJ Cup Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 02:15 15–2
Marginal influence +5
Loss
December 6, 2025 Botond Baros
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 02:33 0–2
Marginal influence -3
Loss
December 6, 2025 Jakub Cilek
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:29 0–0
Marginal influence -7
Loss
December 6, 2025 Darek Pobuda
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:27 0–0
Marginal influence -2
Loss
December 6, 2025 Jan Veselý
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 00:57 0–0
Marginal influence -6
Loss
December 6, 2025 Adélka Bugnerová
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 02:47 -1–3
Marginal influence -9
Win
December 6, 2025 Antonin Tůma
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 7-9 years / Mix / All levels / -28 kg
Method Submission 01:33 0–0
Marginal influence +7
November 2025 No new matches Change +4 Rating 1,315

Rating-period composition

Rating matches
15 0
Record
7–8 Previous month 7–8
Opponents
12 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.

October 2025 7 new matches Change +41 Rating 1,311

Rating-period composition

Rating matches
15 +7
Record
7–8 Previous month 4–4
Opponents
12 +4
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.
Loss
October 25, 2025 Vojtěch Glista
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Points 03:00 0–9
Marginal influence -8
Win
October 25, 2025 Marek Kostka
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 01:10 2–0
Marginal influence +7
Loss
October 25, 2025 Vojtěch Šatava
N-GEN Kids BJJ Tournament #3 Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 00:16 0–0
Marginal influence -4
Win
October 25, 2025 Jakub Bedlek
N-GEN Kids BJJ Tournament #3 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 00:53 6–0
Marginal influence +6
Loss
October 25, 2025 Dominik Bátrla
N-GEN Kids BJJ Tournament #3 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 02:05 5–6
Marginal influence -5
Win
October 25, 2025 Marek Kostka
N-GEN Kids BJJ Tournament #3 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 01:21 6–0
Marginal influence +6
Loss
October 25, 2025 Vojtěch Šatava
N-GEN Kids BJJ Tournament #3 Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
Method Submission 02:17 0–0
Marginal influence -4
September 2025 No new matches Change -1 Rating 1,270

Rating-period composition

Rating matches
8 0
Record
4–4 Previous month 4–4
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.

Relevant matches
26.6
Official ranking percentile
Top 50%
Performance
2.9 pp below expectation

26.6 weighted matches against 26 different opponents across 6 events

Weighted win rate
42.5%
Expected win rate
45.4%
Average opponent rating
1,341
Repeated-opponent share
33.3%
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

XV. REBEL BJJ CUP
U12 · Counts
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Competition age 10
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Competition age 10
N-GEN Kids BJJ Tournament #4
U12 · Counts
Boys Gi / White grey / Junior (10-11yrs) / -30 kg (2015,2016)
  • Competition age 10
  • Registered age: u12
  • Source category: u12
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Competition age 10
TATAMY 19: Czech Open Championship (kids)
U12 · Counts
Kids / Gi / 7-9 years / Mix / All levels / -28 kg
  • Competition age 10
Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
  • Competition age 10
XIII. GrappleXmas BJJ Cup
Does not count
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Competition age 9
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Competition age 9
TATAMY 18 KIDS (No-GI and GI round robin)
Does not count
Kids / Gi / 7-9 years / Mix / All levels / -28 kg
  • Competition age 9
Kids / No Gi / 7-9 years / Mix / All levels / -28 kg
  • Competition age 9
N-GEN Kids BJJ Tournament #3
Does not count
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Competition age 9
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Competition age 9

Classification evidence

Why ≤ 26 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

  • ≤ 26 kg 2 competition events Selected outcome
  • ≤ 28 kg 1 competition event

Registrations and outcomes

XV. REBEL BJJ CUP
≤ 26 kg · Counts as a competition event
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Registered weight class: -26 kg (2017,2018,2019)
  • Source competition limit: -26 kg (2017,2018,2019)

2 matches in the rating period

XV. REBEL BJJ CUP
≤ 26 kg · Counts as a competition event
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Registered weight class: -26 kg (2017,2018,2019)
  • Source competition limit: -26 kg (2017,2018,2019)

3 matches in the rating period

N-GEN Kids BJJ Tournament #4
≤ 30 kg · Does not count
Boys Gi / White grey / Junior (10-11yrs) / -30 kg (2015,2016)
  • Registered weight class: -30 kg (2015,2016)
  • Source competition limit: -30 kg (2015,2016)

2 matches in the rating period · conflicting upper weight limits make this event ambiguous

N-GEN Kids BJJ Tournament #4
≤ 26 kg · Does not count
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Registered weight class: -26 kg (2017,2018,2019)
  • Source competition limit: -26 kg (2017,2018,2019)

4 matches in the rating period · conflicting upper weight limits make this event ambiguous

TATAMY 19: Czech Open Championship (kids)
≤ 28 kg · Counts as a competition event
Kids / 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

TATAMY 19: Czech Open Championship (kids)
≤ 28 kg · Counts as a competition event
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

XIII. GrappleXmas BJJ Cup
≤ 26 kg · Counts as a competition event
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Registered weight class: -26 kg (2016,2017,2018)
  • Source competition limit: -26 kg (2016,2017,2018)

3 matches in the rating period

XIII. GrappleXmas BJJ Cup
≤ 26 kg · Counts as a competition event
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Registered weight class: -26 kg (2016,2017,2018)
  • Source competition limit: -26 kg (2016,2017,2018)

4 matches in the rating period

TATAMY 18 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

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

TATAMY 18 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

N-GEN Kids BJJ Tournament #3
≤ 26 kg · Does not count
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Registered weight class: -26 kg (2016,2017,2018)
  • Source competition limit: -26 kg (2016,2017,2018)

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

N-GEN Kids BJJ Tournament #3
≤ 26 kg · Does not count
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Registered weight class: -26 kg (2016,2017,2018)
  • Source competition limit: -26 kg (2016,2017,2018)

3 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 11 matches in the rating period Selected outcome

Registrations and outcomes

XV. REBEL BJJ CUP
grey · Counts as a match
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • 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 / Junior (10-11yrs) / -30 kg (2015,2016)
  • Source belt category: grey

2 matches in the rating period

XIII. GrappleXmas BJJ Cup
grey · Counts as a match
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Source belt category: grey

4 matches in the rating period

N-GEN Kids BJJ Tournament #3
grey · Counts as a match
Boys Gi / White grey / Pee Wee (7-9 yrs) / -26 kg (2016,2017,2018)
  • Source belt category: grey

3 matches in the rating period