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CZ

Jakub Poláček

ŠKOLA BOJOVÝCH UMĚNÍ MOST

W–L
1–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,206
Rating based on Gi matches in the past 12 months.
No-Gi
1,086
Rating based on No-Gi matches in the past 12 months.
Current form
1–5
Results from the ten most recent rating-eligible matches.
Opponents
5
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

4
Events
Date Event Result Format Division
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 CZ · No-Gi · U12 · ≤30 kg ; Rumble - stužkovaná / NINJAS 9-12 let / -130 cm 1–3 W–L: Win / Loss GiNo-Gi
  • Rumble - stužkovaná / NINJAS 9-12 let / -130 cm
  • Place #5
  • Self Defense Creativ / U12 Žáci (6-8 let) / Začátečníci 1-3 roky (10. – 6. kyu)
CZECH FIGHTING SERIES 11, Samurai Cup 2025 CZ · No-Gi · U12 · ≤30 kg 0–2 W–L: Win / Loss No-Gi
  • Place #4
INTERNATIONAL CZECH CHAMPIONSHIP ČSAKJ 2025 - CFS 10 CZ · Gi · 4–6 yo ; Rumble - stužkovaná / DRAGONS 7-8 let / -120 cm 0–3 W–L: Win / Loss Gi
  • Self Defense Creativ / U12 Žáci / Začátečníci 1-3 roky (10. – 6. kyu)
  • Place #9
  • Rumble - stužkovaná / DRAGONS 7-8 let / -120 cm
TIGER CUP 2024 - CFS 9 CZ · Rumble - stužkovaná / DRAGONS 7-8 let / -140 cm Chlapci Skup... 1–1 W–L: Win / Loss Gi
  • Rumble - stužkovaná / DRAGONS 7-8 let / -140 cm Chlapci Skupina 1
  • 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 Change 0 Rating 1,196

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 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.

July 2026 No new matches Change 0 Rating 1,196

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 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.

June 2026 No new matches Change 0 Rating 1,196

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 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.

May 2026 No new matches Change +3 Rating 1,196

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 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.

April 2026 4 new matches Change +97 Rating 1,193

Rating-period composition

Rating matches
6 +4
Record
1–5 Previous month 0–2
Opponents
5 +3
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.
Win
April 12, 2026 Milan Hrudka
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Rumble - stužkovaná / NINJAS 9-12 let / -130 cm
Method Decision 0–0
Marginal influence +26
Loss
April 12, 2026 Martin Skřítek
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Rumble - stužkovaná / NINJAS 9-12 let / -130 cm
Method Decision 0–0
Marginal influence +9
Loss
April 12, 2026 Sebastian Schulz
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U12 Děti chlapci / -30 kg
Method Disqualification 0–0
Marginal influence -30
Loss
April 12, 2026 Vasil Batryn
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U12 Děti chlapci / -30 kg
Method Submission 01:43 0–10
Marginal influence -17
March 2026 No new matches · 3 left period Change -87 Rating 1,096

Rating-period composition

Rating matches
2 -3
Record
0–2 Previous month 0–5
Opponents
2 -2
Events
1 -1

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.

February 2026 No new matches Change +1 Rating 1,183

Rating-period composition

Rating matches
5 0
Record
0–5 Previous month 0–5
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.

January 2026 No new matches Change +1 Rating 1,182

Rating-period composition

Rating matches
5 0
Record
0–5 Previous month 0–5
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.

December 2025 No new matches Change 0 Rating 1,181

Rating-period composition

Rating matches
5 0
Record
0–5 Previous month 0–5
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.

November 2025 No new matches · 2 left period Change -20 Rating 1,181

Rating-period composition

Rating matches
5 -2
Record
0–5 Previous month 1–6
Opponents
4 -2
Events
2 -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.

October 2025 2 new matches Change +49 Rating 1,201

Rating-period composition

Rating matches
7 +2
Record
1–6 Previous month 1–4
Opponents
6 +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.
Loss
October 18, 2025 Vasil Batryn
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling NoGi / U12 Děti chlapci / -30 kg
Method Points 02:00 0–0
Marginal influence -19
Loss
October 18, 2025 Petr Krejčík
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling NoGi / U12 Děti chlapci / -30 kg
Method Submission 01:17 0–0
Marginal influence -32
September 2025 No new matches Change 0 Rating 1,152

Rating-period composition

Rating matches
5 0
Record
1–4 Previous month 1–4
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
4.6
Official ranking percentile
Top 88%
Performance
-

4.6 weighted matches against 5 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,355
Repeated-opponent share
16.7%
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 1 event vote Selected outcome

Registrations and outcomes

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
U10 · Counts
Rumble - stužkovaná / NINJAS 9-12 let / -130 cm
  • Competition age 9
  • Registered age: u10
  • Source category: u10
Self Defense Creativ / U12 Žáci (6-8 let) / Začátečníci 1-3 roky (10. – 6. kyu)
  • Competition age 9
  • Registered age: u12
  • Source category: u12
Grappling NoGi / U12 Děti chlapci / -30 kg
  • Competition age 9
  • Registered age: u12
  • Source category: u12
CZECH FIGHTING SERIES 11, Samurai Cup 2025
Does not count
Grappling NoGi / U12 Děti chlapci / -30 kg
  • Competition age 8
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 30 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

  • ≤ 30 kg 2 competition events Selected outcome

Registrations and outcomes

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
Does not count
Rumble - stužkovaná / NINJAS 9-12 let / -130 cm

2 matches in the rating period · weight class could not be normalized reliably

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
Does not count
Self Defense Creativ / U12 Žáci (6-8 let) / Začátečníci 1-3 roky (10. – 6. kyu)

No matches in the rating period · no valid weight evidence

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
≤ 30 kg · Counts as a competition event
Grappling NoGi / U12 Děti chlapci / -30 kg
  • Registered weight class: -30 kg
  • Source competition limit: -30 kg

2 matches in the rating period

CZECH FIGHTING SERIES 11, Samurai Cup 2025
≤ 30 kg · Counts as a competition event
Grappling NoGi / U12 Děti chlapci / -30 kg
  • Registered weight class: -30 kg
  • Source competition limit: -30 kg

2 matches in the rating period