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CZ

Jan Rác

5th Dimension BJJ

≤ 30 kg
W–L
5–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,283
Rating based on Gi matches in the past 12 months.
No-Gi
1,331
Rating based on No-Gi matches in the past 12 months.
Current form
7–3
Results from the ten most recent rating-eligible matches.
Opponents
5
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
24
Silver
4
Bronze
10
Total medals
38
Events with results
27

Full career record

Wins
86
Losses
24
Matches
110
Win rate
78.2%

Ways of winning

Submission
29
Points
36
Decision
5
Disqualification
2
Other recorded result
13

Personal records

Longest winning streak
32
Longest submission streak
3
Longest gold streak
9
Largest recorded points win
25–0

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
5
Distinct events
1

Ways of winning

  • Submission 10 36%
  • Points 11 39%
  • Decision 1 4%
  • Other recorded result 6 21%

Gi versus No-Gi

Gi

Rating
1283
Record
2–1
Win rate
67%
Submission share
38%

No-Gi

Rating
1331
Record
3–1
Win rate
75%
Submission share
29%

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
1,390
Change over 90 days
+1
Highest rating in 12 months
1,389
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,373
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
29%
Effective evidence
5.1
Confidence
69/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 56–21 56–21 across 77 rematches against 25 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #294 Maximilian Jurk · NAGA Germany Grappling Championship Pts 3–0
  2. #436 Matvii Poliakov · NAGA Germany Grappling Championship Pts 8–0
  3. #781 Gabriel Palumbo · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Pts 10–0

Full career

  1. #294 Maximilian Jurk · NAGA Germany Grappling Championship Pts 3–0
  2. #436 Matvii Poliakov · NAGA Germany Grappling Championship Pts 8–0
  3. #781 Gabriel Palumbo · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Pts 10–0 Earlier · Sub 00:44 2–0 March 15, 2025 · Grappling Industries NUREMBERG
  4. #1086 Nejla Ziko · Grappling Industries NUREMBERG Pts 25–0

Rivals

Opponent Head-to-head record Matches
Viktor Vacek 12–1 13
Luka Long 6–1 7

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 +1 Rating 1,390

Rating-period composition

Rating matches
7 0
Record
5–2 Previous month 5–2
Opponents
5 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 1,389

Rating-period composition

Rating matches
7 0
Record
5–2 Previous month 5–2
Opponents
5 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 1,389

Rating-period composition

Rating matches
7 0
Record
5–2 Previous month 5–2
Opponents
5 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 7 new matches · 1 left period Change +148 Rating 1,389

Rating-period composition

Rating matches
7 +6
Record
5–2 Previous month 1–0
Opponents
5 +4
Events
1 0

1 older matches left the 12-month period: 1 won and 0 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
May 23, 2026 Matvii Poliakov
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 25 - 29.9 / 10-11 years
Method Points 02:53 8–0
Marginal influence +23
Win
May 23, 2026 Maximilian Jurk
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 25 - 29.9 / 10-11 years
Method Points 00:48 3–0
Marginal influence +19
Loss
May 23, 2026 Yahya Adam
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 25 - 29.9 / 10-11 years
Method Points 02:27 0–4
Marginal influence -12
Win
May 23, 2026 Leonardo Parente
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 25 - 29.9 / 10-11 years
Method Points 02:51 8–1
Marginal influence +13
Loss
May 23, 2026 Yahya Adam
NAGA Germany Grappling Championship Children Gi (Male) / Expert / 25 - 29.9 / 10-11 years
Method Submission 02:43 0–11
Marginal influence -13
Win
May 23, 2026 Davyd Khachatrian
NAGA Germany Grappling Championship Children Gi (Male) / Expert / 25 - 29.9 / 10-11 years
Method Submission 03:48 2–0
Marginal influence +14
Win
May 23, 2026 Leonardo Parente
NAGA Germany Grappling Championship Children Gi (Male) / Expert / 25 - 29.9 / 10-11 years
Method Submission 00:19 3–0
Marginal influence +6
April 2026 No new matches Change -4 Rating 1,241

Rating-period composition

Rating matches
1 0
Record
1–0 Previous month 1–0
Opponents
1 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 · 4 left period Change -147 Rating 1,245

Rating-period composition

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

4 older matches left the 12-month period: 4 won and 0 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 1,392

Rating-period composition

Rating matches
5 0
Record
5–0 Previous month 5–0
Opponents
3 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 1,392

Rating-period composition

Rating matches
5 0
Record
5–0 Previous month 5–0
Opponents
3 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 1,392

Rating-period composition

Rating matches
5 0
Record
5–0 Previous month 5–0
Opponents
3 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 Change 0 Rating 1,392

Rating-period composition

Rating matches
5 0
Record
5–0 Previous month 5–0
Opponents
3 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.

October 2025 No new matches Change -7 Rating 1,392

Rating-period composition

Rating matches
5 0
Record
5–0 Previous month 5–0
Opponents
3 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.

September 2025 No new matches Change +11 Rating 1,399

Rating-period composition

Rating matches
5 0
Record
5–0 Previous month 5–0
Opponents
3 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
5.1
Official ranking percentile
-
Performance
-

5.1 weighted matches against 5 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,373
Repeated-opponent share
28.6%
Network connectivity
87.6%

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 5 event votes Selected outcome

Registrations and outcomes

NAGA Germany Grappling Championship
U12 · Counts
Children No-Gi (Male) / Expert / 25 - 29.9 / 10-11 years
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Children Gi (Male) / Expert / 25 - 29.9 / 10-11 years
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Grappling Industries PRAGUE
U12 · Counts
Gi Kids / Yellow/Orange / 10 - 11 years / -75 lbs
  • Competition age 11
  • Registered age: u12
  • Source category: u12
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
U12 · Counts
Grappling Gi / U12 Děti chlapci / -30 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
TATAMY 20: PRAGUE - KIDS (round robin)
U12 · Counts
Kids / Gi / 10-12 years / Boys / Yellow/orange/green belt / -28 kg
  • Competition age 11
Kids / Gi / 10-12 years / Boys / White/grey belt / -32 kg
  • Competition age 11
GRIND 12 Kids (NO-GI & GI ROUND ROBIN)
U12 · Counts
No-Gi / 10-12 years / Boy / -28 kg / Advanced
  • Competition age 11
Gi / 10-12 years / Boy / -28 kg / Advanced
  • Competition age 11
Christmas Kids Ground BJJ Tour - Finálové kolo 2025
Does not count
Kids mix 9-11 let - Kimono / -30kg
  • Competition age 10
TATAMY 17 KIDS (No-GI and GI round robin)
Does not count
Kids / Gi / 10-12 years / Boys / White/grey belt / -32 kg
  • Competition age 10
Kids / No Gi / 10-12 years / Boys / Beginner / -28 kg
  • Competition age 10
Kids / Gi / 10-12 years / Boys / White/grey belt / -28 kg
  • Competition age 10
Ground Bjj Tour 4. - Only submission - Kladno
Does not count
Kids mix 9-11 let - Kimono / -30kg
  • Competition age 10
CZECH FIGHTING SERIES 11, Samurai Cup 2025
Does not count
Grappling NoGi / U12 Děti chlapci / -30 kg
  • Competition age 10
  • Registered age: u12
  • Source category: u12
Grappling Gi / U12 Děti chlapci / -30 kg
  • Competition age 10
  • Registered age: u12
  • Source category: u12
AOM Cup Kids 3
Does not count
Boys NoGi / Grey / U12 (2015,2014,2013) / -30 kg
  • Competition age 10
  • Registered age: u12
  • Source category: u12
Boys Gi / Grey / U12 (2015,2014,2013) / -30 kg
  • Competition age 10
  • Registered age: u12
  • Source category: u12

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 8 matches in the rating period Selected outcome

Registrations and outcomes

TATAMY 20: PRAGUE - KIDS (round robin)
grey · Counts as a match
Kids / Gi / 10-12 years / Boys / White/grey belt / -32 kg
  • Source belt category: grey

3 matches in the rating period

TATAMY 17 KIDS (No-GI and GI round robin)
grey · Counts as a match
Kids / Gi / 10-12 years / Boys / White/grey belt / -28 kg
  • Source belt category: grey

2 matches in the rating period

TATAMY 17 KIDS (No-GI and GI round robin)
grey · Counts as a match
Kids / Gi / 10-12 years / Boys / White/grey belt / -32 kg
  • Source belt category: grey

3 matches in the rating period