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CZ

Karel Straka

Tiger Fight Club Chomutov

W–L
6–11
Won and lost rating-eligible matches in the past 12 months.
Gi
1,258
Rating based on Gi matches in the past 12 months.
No-Gi
1,179
Rating based on No-Gi matches in the past 12 months.
Current form
2–8
Results from the ten most recent rating-eligible matches.
Opponents
11
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
2
Silver
4
Bronze
3
Total medals
9
Events with results
6

Full career record

Wins
8
Losses
20
Matches
28
Win rate
28.6%

Ways of winning

Submission
1
Points
4
Decision
3
Disqualification
0

Personal records

Longest winning streak
3
Longest submission streak
1
Longest gold streak
1

Recent recorded placements

  1. CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026

    CZ Event record 2–8

    • Grappling NoGi / U12 Děti chlapci / -50 kg
    • Self Defense Creativ / U12 Žáci (9-11 let) / Začátečníci 1-3 roky (10. – 6. kyu)
    • Place 5
    • Place 4
    • Grappling Gi / U12 Děti chlapci / -50 kg

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
11
Distinct events
3

Ways of winning

  • Submission 1 17%
  • Points 2 33%
  • Decision 3 50%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1258
Record
5–8
Win rate
38%
Submission share
0%

No-Gi

Rating
1179
Record
1–3
Win rate
25%
Submission share
100%

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
1,295
Change over 90 days
+82
Highest rating in 12 months
1,317
Performance versus expectation
-8.9 pp
Schedule strength
Top 71%
Average opponent rating
1,288
Weighted win rate
39%
Expected win rate
47%
Repeat-opponent share
35%
Effective evidence
10.1
Confidence
91/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 5–12 5–12 across 17 rematches against 8 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1755 Karel Schämmer · CZECH FIGHTING SERIES 12 – Under the Lights 2026 Dec 0–0
  2. #2383 David Uchytil · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 1–0
  3. #2455 Mikuláš Brabec · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 1–0 Earlier · Pts 0–0 October 18, 2025 · CZECH FIGHTING SERIES 11, Samurai Cup 2025
  4. #2785 Patrik Stayr · CZECH FIGHTING SERIES 12 – Under the Lights 2026 Sub 00:50 2–0 Earlier · Pts 0–0 October 18, 2025 · CZECH FIGHTING SERIES 11, Samurai Cup 2025

Full career

  1. #1755 Karel Schämmer · CZECH FIGHTING SERIES 12 – Under the Lights 2026 Dec 0–0
  2. #2383 David Uchytil · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 1–0
  3. #2455 Mikuláš Brabec · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 1–0 Earlier · Pts 0–0 October 18, 2025 · CZECH FIGHTING SERIES 11, Samurai Cup 2025
  4. #2785 Patrik Stayr · CZECH FIGHTING SERIES 12 – Under the Lights 2026 Sub 00:50 2–0 Earlier · Pts 0–0 October 18, 2025 · CZECH FIGHTING SERIES 11, Samurai Cup 2025

Rivals

Opponent Head-to-head record Matches
Jan Švarc 0–2 2
Lukáš Lendel 0–2 2

Around this athlete

Athlete Rank Rating
Emilia Magaddino #1863 1,296
Karel Straka #1864 1,295
Jefta Vis #1865 1,295

Recent tournaments

  3. CZECH FIGHTING SERIES 11, Samurai Cup 2025

    October 18, 2025 · Gi · 9–12 yo
    Gi 2–1

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 1,295

Rating-period composition

Rating matches
17 0
Record
6–11 Previous month 6–11
Opponents
11 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.

July 2026 No new matches Change 0 Rating 1,295

Rating-period composition

Rating matches
17 0
Record
6–11 Previous month 6–11
Opponents
11 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.

June 2026 No new matches Change 0 Rating 1,295

Rating-period composition

Rating matches
17 0
Record
6–11 Previous month 6–11
Opponents
11 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.

May 2026 No new matches Change +1 Rating 1,295

Rating-period composition

Rating matches
17 0
Record
6–11 Previous month 6–11
Opponents
11 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 10 new matches Change -21 Rating 1,294

Rating-period composition

Rating matches
17 +10
Record
6–11 Previous month 4–3
Opponents
11 +5
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
April 12, 2026 Marek Šlemer
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm
Method Decision 01:00 0–1
Marginal influence -8
Win
April 12, 2026 Mikuláš Brabec
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm
Method Decision 1–0
Marginal influence +10
Loss
April 12, 2026 Marek Šlemer
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Kids Run / NINJAS 9-12 let / 150+ cm
Method Decision 0–1
Marginal influence -8
Win
April 12, 2026 David Uchytil
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Kids Run / NINJAS 9-12 let / 150+ cm
Method Decision 1–0
Marginal influence +16
Loss
April 12, 2026 Maroš Mišák
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm
Method Decision 00:56 0–1
Marginal influence -5
Loss
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Kids Run / NINJAS 9-12 let / 150+ cm
Method Decision 0–1
Marginal influence -13
Loss
April 12, 2026 Jan Švarc
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U12 Děti chlapci / -50 kg
Method Disqualification 0–0
Marginal influence -7
Loss
April 12, 2026 Jan Švarc
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U12 Děti chlapci / -50 kg
Method Points 02:00 5–6
Marginal influence -7
Loss
April 12, 2026 Lukáš Lendel
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling Gi / U12 Děti chlapci / -50 kg
Method Submission 01:33 4–10
Marginal influence -6
Loss
April 12, 2026 Lukáš Lendel
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling Gi / U12 Děti chlapci / -50 kg
Method Submission 01:23 0–4
Marginal influence -6
March 2026 No new matches · 5 left period Change -2 Rating 1,315

Rating-period composition

Rating matches
7 -5
Record
4–3 Previous month 6–6
Opponents
6 -5
Events
2 -1

5 older matches left the 12-month period: 2 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 4 new matches Change +43 Rating 1,317

Rating-period composition

Rating matches
12 +4
Record
6–6 Previous month 4–4
Opponents
11 +3
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
February 28, 2026 Karel Schämmer
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm
Method Decision 01:00 0–0
Marginal influence +21
Loss
February 28, 2026 Milan Marek
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm
Method Points 00:30 0–0
Marginal influence -19
Loss
February 28, 2026 Štěpán Škrabálek
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling NoGi / U12 Děti chlapci / -45 kg
Method Submission 00:19 0–4
Marginal influence -8
Win
February 28, 2026 Patrik Stayr
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling NoGi / U12 Děti chlapci / -45 kg
Method Submission 00:50 2–0
Marginal influence +9
January 2026 No new matches Change 0 Rating 1,274

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.

December 2025 No new matches Change 0 Rating 1,274

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.

November 2025 No new matches · 4 left period Change +62 Rating 1,274

Rating-period composition

Rating matches
8 -4
Record
4–4 Previous month 4–8
Opponents
8 -3
Events
2 -1

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.

October 2025 3 new matches · 2 left period Change +90 Rating 1,212

Rating-period composition

Rating matches
12 +1
Record
4–8 Previous month 2–9
Opponents
11 +1
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.
Win
October 18, 2025 Patrik Stayr
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Kids Run / NINJAS 9-12 let / 150+ cm Chlapci
Method Points 0–0
Marginal influence +12
Win
October 18, 2025 Mikuláš Brabec
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Kids Run / NINJAS 9-12 let / 150+ cm Chlapci
Method Points 0–0
Marginal influence +10
Loss
October 18, 2025 Maroš Mišák
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Kids Run / NINJAS 9-12 let / 150+ cm Chlapci
Method Points 0–0
Marginal influence -5
September 2025 No new matches Change 0 Rating 1,122

Rating-period composition

Rating matches
11 0
Record
2–9 Previous month 2–9
Opponents
10 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.

Relevant matches
10.1
Official ranking percentile
Top 61%
Performance
8.9 pp below expectation

10.1 weighted matches against 11 different opponents across 3 events

Weighted win rate
38.5%
Expected win rate
47.4%
Average opponent rating
1,288
Repeated-opponent share
35.3%
Network connectivity
80.9%

Classification evidence

Why U14?

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

  • U14 2 event votes Selected outcome

Registrations and outcomes

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
U14 · Counts
Grappling NoGi / U12 Děti chlapci / -50 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Grappling Gi / U12 Děti chlapci / -50 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Self Defense Creativ / U12 Žáci (9-11 let) / Začátečníci 1-3 roky (10. – 6. kyu)
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Kids Run / NINJAS 9-12 let / 150+ cm
  • Competition age 12
Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm
  • Competition age 12
  • Registered age: u14
  • Source category: u14
CZECH FIGHTING SERIES 12 – Under the Lights 2026
U14 · Counts
Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Grappling NoGi / U12 Děti chlapci / -45 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
CZECH FIGHTING SERIES 11, Samurai Cup 2025
Does not count
Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm Chlapci A
  • Competition age 11
Kids Run / NINJAS 9-12 let / 150+ cm Chlapci
  • Competition age 11

Classification evidence

Why ≤ 45 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

  • ≤ 45 kg 1 competition event Selected outcome
  • ≤ 50 kg 1 competition event

Registrations and outcomes

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
≤ 50 kg · Counts as a competition event
Grappling NoGi / U12 Děti chlapci / -50 kg
  • Registered weight class: -50 kg
  • Source competition limit: -50 kg

2 matches in the rating period

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
≤ 50 kg · Counts as a competition event
Grappling Gi / U12 Děti chlapci / -50 kg
  • Registered weight class: -50 kg
  • Source competition limit: -50 kg

2 matches in the rating period

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
Does not count
Self Defense Creativ / U12 Žáci (9-11 let) / Začátečníci 1-3 roky (10. – 6. kyu)

No matches in the rating period · no valid weight evidence

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
Does not count
Kids Run / NINJAS 9-12 let / 150+ cm

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

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
Does not count
Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm

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

CZECH FIGHTING SERIES 12 – Under the Lights 2026
Does not count
Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm

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

CZECH FIGHTING SERIES 12 – Under the Lights 2026
≤ 45 kg · Counts as a competition event
Grappling NoGi / U12 Děti chlapci / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period

CZECH FIGHTING SERIES 11, Samurai Cup 2025
Does not count
Rumble - stužkovaná / NINJAS 9-12 let / 150+ cm Chlapci A

No matches in the rating period · no valid weight evidence

CZECH FIGHTING SERIES 11, Samurai Cup 2025
Does not count
Kids Run / NINJAS 9-12 let / 150+ cm Chlapci

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