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CZ

Štefan Kubalak

Ji-Jitsu Janovice nad Úhlavou

W–L
2–0
Won and lost rating-eligible matches in the past 12 months.
Gi
-
Rating based on Gi matches in the past 12 months.
No-Gi
1,303
Rating based on No-Gi matches in the past 12 months.
Current form
2–0
Results from the ten most recent rating-eligible matches.
Opponents
2
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
1
Silver
1
Bronze
0
Total medals
2
Events with results
3

Full career record

Wins
3
Losses
1
Matches
4
Win rate
75.0%

Ways of winning

Submission
2
Points
1
Decision
0
Disqualification
0

Personal records

Longest winning streak
2
Longest submission streak
1
Longest gold streak
1

Recent recorded placements

12-month performance profile

How the results were achieved

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

Ways of winning

  • Submission 1 50%
  • Points 1 50%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
-
Record
-
Win rate
-
Submission share
-

No-Gi

Rating
1303
Record
2–0
Win rate
100%
Submission share
50%

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
1,303
Change over 90 days
-
Highest rating in 12 months
1,303
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,199
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
0%
Effective evidence
1.7
Confidence
32/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Recent tournaments

  2. INTERNATIONAL CZECH CHAMPIONSHIP ČSAKJ 2025 - CFS 10

    March 30, 2025
    No-Gi 0–0

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 1,303

Rating-period composition

Rating matches
2 0
Record
2–0 Previous month 2–0
Opponents
2 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 1,303

Rating-period composition

Rating matches
2 0
Record
2–0 Previous month 2–0
Opponents
2 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 1,303

Rating-period composition

Rating matches
2 0
Record
2–0 Previous month 2–0
Opponents
2 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 0 Rating 1,303

Rating-period composition

Rating matches
2 0
Record
2–0 Previous month 2–0
Opponents
2 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 0 Rating 1,303

Rating-period composition

Rating matches
2 0
Record
2–0 Previous month 2–0
Opponents
2 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 Change 0 Rating 1,303

Rating-period composition

Rating matches
2 0
Record
2–0 Previous month 2–0
Opponents
2 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.

February 2026 2 new matches Change Starting point Rating 1,303

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 Vojtěch Pražák
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling NoGi / U18 Kadeti chlapci / -75 kg
Method Points 02:00 7–2
Marginal influence +31
Win
February 28, 2026 Libor Winter
CZECH FIGHTING SERIES 12 – Under the Lights 2026 Grappling NoGi / U18 Kadeti chlapci / -75 kg
Method Submission 01:32 2–2
Marginal influence +54
Relevant matches
1.7
Official ranking percentile
-
Performance
-

1.7 weighted matches against 2 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,199
Repeated-opponent share
0.0%
Network connectivity
0.0%

Classification evidence

Why U18?

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

  • U18 1 event vote Selected outcome

Registrations and outcomes

CZECH FIGHTING SERIES 12 – Under the Lights 2026
U18 · Counts
Grappling NoGi / U18 Kadeti chlapci / -75 kg
  • Competition age 17
  • Registered age: u18
  • Source category: u18

Classification evidence

Why ≤ 75 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

  • ≤ 75 kg 1 competition event Selected outcome

Registrations and outcomes

CZECH FIGHTING SERIES 12 – Under the Lights 2026
≤ 75 kg · Counts as a competition event
Grappling NoGi / U18 Kadeti chlapci / -75 kg
  • Registered weight class: -75 kg
  • Source competition limit: -75 kg

2 matches in the rating period