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CZ

Petr Krejčík

SAMURAI FIGHT CLUB

W–L
3–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,245
Rating based on Gi matches in the past 12 months.
No-Gi
1,206
Rating based on No-Gi matches in the past 12 months.
Current form
3–2
Results from the ten most recent rating-eligible matches.
Opponents
4
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
2
Silver
2
Bronze
3
Total medals
7
Events with results
5

Full career record

Wins
10
Losses
10
Matches
20
Win rate
50.0%

Ways of winning

Submission
1
Points
9
Decision
0
Disqualification
0

Personal records

Longest winning streak
3
Longest submission streak
1
Longest gold streak
1
Largest recorded points win
7–0

Recent recorded placements

  3. TIGER CUP 2024 - CFS 9

    CZ Event record 2–3

    • Grappling Gi / Mladší žáci U10 6-9 let / -25 kg
    • Place 4

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
2
Unique opponents
4
Distinct events
1

Ways of winning

  • Submission 1 33%
  • Points 2 67%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1245
Record
2–1
Win rate
67%
Submission share
0%

No-Gi

Rating
1206
Record
1–1
Win rate
50%
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
1,313
Change over 90 days
+93
Highest rating in 12 months
1,285
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,331
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
20%
Effective evidence
3.5
Confidence
59/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 6–3 6–3 across 9 rematches against 3 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1410 Kristian Kubíček · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Pts 5–0
  2. #2672 Jakub Poláček · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Sub 01:17 0–0

Full career

  1. #349 Josef Vrága · International Czech Championship ČSAKJ 2024 - CFS 7 Pts 0–0
  2. #989 Grigor Dimitrov · TIGER CUP 2024 - CFS 9 Pts 0–0
  3. #1410 Kristian Kubíček · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Pts 5–0
  4. #2672 Jakub Poláček · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Sub 01:17 0–0

Rivals

Opponent Head-to-head record Matches
Petr Chvostal 4–1 5
Josef Vrága 1–1 2

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 1,313

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 0
Events
1 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 1,313

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 0
Events
1 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 1,313

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 0
Events
1 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 1,313

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 0
Events
1 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 -2 Rating 1,310

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 0
Events
1 0

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

March 2026 No new matches · 5 left period Change +11 Rating 1,312

Rating-period composition

Rating matches
5 -5
Record
3–2 Previous month 5–5
Opponents
4 -5
Events
1 -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 No new matches Change +3 Rating 1,301

Rating-period composition

Rating matches
10 0
Record
5–5 Previous month 5–5
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.

January 2026 No new matches Change 0 Rating 1,298

Rating-period composition

Rating matches
10 0
Record
5–5 Previous month 5–5
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.

December 2025 No new matches Change -2 Rating 1,298

Rating-period composition

Rating matches
10 0
Record
5–5 Previous month 5–5
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.

November 2025 No new matches · 5 left period Change +15 Rating 1,300

Rating-period composition

Rating matches
10 -5
Record
5–5 Previous month 7–8
Opponents
9 -4
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.

October 2025 5 new matches · 2 left period Change +94 Rating 1,285

Rating-period composition

Rating matches
15 +3
Record
7–8 Previous month 4–8
Opponents
13 +2
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 Kristian Kubíček
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling Gi / U12 Děti chlapci / -30 kg
Method Points 02:00 5–0
Marginal influence +18
Win
October 18, 2025 Petr Chvostal
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling Gi / U12 Děti chlapci / -30 kg
Method Points 02:00 4–0
Marginal influence +15
Loss
October 18, 2025 Kristian Kubíček
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling Gi / U12 Děti chlapci / -30 kg
Method Disqualification 01:58 0–0
Marginal influence -13
Loss
October 18, 2025 Jan Rác
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling NoGi / U12 Děti chlapci / -30 kg
Method Submission 01:48 0–0
Marginal influence -16
Win
October 18, 2025 Jakub Poláček
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling NoGi / U12 Děti chlapci / -30 kg
Method Submission 01:17 0–0
Marginal influence +7
September 2025 No new matches Change -1 Rating 1,191

Rating-period composition

Rating matches
12 0
Record
4–8 Previous month 4–8
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.

Relevant matches
3.5
Official ranking percentile
-
Performance
-

3.5 weighted matches against 4 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,331
Repeated-opponent share
20.0%
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 1 event vote Selected outcome

Registrations and outcomes

CZECH FIGHTING SERIES 11, Samurai Cup 2025
U12 · Counts
Grappling NoGi / U12 Děti chlapci / -30 kg
  • Competition age 9
  • Registered age: u12
  • Source category: u12
Grappling Gi / U12 Děti chlapci / -30 kg
  • Competition age 9
  • 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 1 competition event Selected outcome

Registrations and outcomes

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

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

3 matches in the rating period