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CZ

Alex Mráz

WOW gym

W–L
0–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,106
Rating based on Gi matches in the past 12 months.
No-Gi
1,083
Rating based on No-Gi matches in the past 12 months.
Current form
0–5
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
1
Total medals
5
Events with results
4

Full career record

Wins
4
Losses
14
Matches
18
Win rate
22.2%

Ways of winning

Submission
0
Points
4
Decision
0
Disqualification
0

Personal records

Longest winning streak
2
Longest gold streak
1

Recent recorded placements

  1. XV. REBEL BJJ CUP

    CZ Event record 0–5

    • Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
    • Place 4

  2. N-GEN Kids BJJ Tournament #2

    CZ Event record 3–2

    • Boys Gi / White grey / Mighty Mite (5-6 yrs) / -22 kg (2019,2020)
    • Boys No-Gi / All belt / Mighty Mite (4-6 yrs) / -22 kg (2019,2020)

  3. XIV. REBEL BJJ CUP

    CZ Event record 1–1

    • Boys Gi / White grey / Mighty Mite (5-6 yrs) / -22 kg (2019,2020)

  4. XII. GrappleXmas BJJ Cup

    CZ Event record 0–6

    • Place 5
    • Boys No-Gi / All belt / Mighty Mite (4-6 yrs) / +22 kg (2018,2019)

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
4
Distinct events
1

Ways of winning

  • Submission 0
  • Points 0
  • Decision 0
  • Other recorded result 0

Gi versus No-Gi

Gi

Rating
1106
Record
0–2
Win rate
0%
Submission share
-

No-Gi

Rating
1083
Record
0–3
Win rate
0%
Submission share
-

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
1,176
Change over 90 days
-8
Highest rating in 12 months
1,255
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,311
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
20%
Effective evidence
4
Confidence
61/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 2–10 2–10 across 12 rematches against 4 repeat opponents.

Rivals

Opponent Head-to-head record Matches
Theodor Kaláb 2–2 4
Marek Kostka 0–3 3

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 1,176

Rating-period composition

Rating matches
5 0
Record
0–5 Previous month 0–5
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 1,176

Rating-period composition

Rating matches
5 0
Record
0–5 Previous month 0–5
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 1,176

Rating-period composition

Rating matches
5 0
Record
0–5 Previous month 0–5
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 · 5 left period Change -71 Rating 1,176

Rating-period composition

Rating matches
5 -5
Record
0–5 Previous month 3–7
Opponents
4 -3
Events
1 -1

5 older matches left the 12-month period: 3 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 -81 Rating 1,247

Rating-period composition

Rating matches
10 +5
Record
3–7 Previous month 3–2
Opponents
7 +4
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.
Loss
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 Submission 00:47 0–2
Marginal influence -21
Loss
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 01:11 0–6
Marginal influence -23
Loss
April 18, 2026 Samuel Cetkovsky
XV. REBEL BJJ CUP Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
Method Submission 00:14 0–6
Marginal influence -15
Loss
April 18, 2026 Tadeáš Bábíček
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
Method Submission 00:27 0–0
Marginal influence -8
Loss
April 18, 2026 Tomáš Frydrych
XV. REBEL BJJ CUP Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
Method Submission 01:11 0–0
Marginal influence -3
March 2026 No new matches · 2 left period Change -5 Rating 1,328

Rating-period composition

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

February 2026 No new matches Change 0 Rating 1,333

Rating-period composition

Rating matches
7 0
Record
4–3 Previous month 4–3
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 0 Rating 1,333

Rating-period composition

Rating matches
7 0
Record
4–3 Previous month 4–3
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 · 6 left period Change +77 Rating 1,333

Rating-period composition

Rating matches
7 -6
Record
4–3 Previous month 4–9
Opponents
4 -4
Events
2 -1

6 older matches left the 12-month period: 0 won and 6 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

November 2025 No new matches Change +2 Rating 1,256

Rating-period composition

Rating matches
13 0
Record
4–9 Previous month 4–9
Opponents
8 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 No new matches Change 0 Rating 1,254

Rating-period composition

Rating matches
13 0
Record
4–9 Previous month 4–9
Opponents
8 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.

September 2025 No new matches Change -1 Rating 1,254

Rating-period composition

Rating matches
13 0
Record
4–9 Previous month 4–9
Opponents
8 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
4
Official ranking percentile
-
Performance
-

4 weighted matches against 4 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,311
Repeated-opponent share
20.0%
Network connectivity
80.9%

Classification evidence

Why U8?

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

  • U8 1 event vote Selected outcome

Registrations and outcomes

XV. REBEL BJJ CUP
U8 · Counts
Boys Gi / White grey / Pee Wee (7-9 yrs) / -23 kg (2017,2018,2019)
  • Competition age 7
Boys No-Gi / All belt / Pee Wee (7-9 yrs) / -26 kg (2017,2018,2019)
  • Competition age 7

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 2 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) / -23 kg (2017,2018,2019)
  • Source belt category: grey

2 matches in the rating period