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CZ

Jaromír Roggenbuck

Red Dot Gym

W–L
1–0
Won and lost rating-eligible matches in the past 12 months.
Gi
-
Rating based on Gi matches in the past 12 months.
No-Gi
1,234
Rating based on No-Gi matches in the past 12 months.
Current form
1–0
Results from the ten most recent rating-eligible matches.
Opponents
1
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
1
Silver
4
Bronze
0
Total medals
5
Events with results
9

Full career record

Wins
7
Losses
3
Matches
10
Win rate
70.0%

Ways of winning

Submission
4
Points
1
Decision
1
Disqualification
0

Personal records

Longest winning streak
3
Longest submission streak
3

Recent recorded placements

  1. Pardubice Grappling Open vol.6

    CZ Event record 0–0

    • Place 4

  2. TATAMY 20: PRAGUE - KIDS (round robin)

    CZ Event record 0–0

    • Silver

  3. 2026 AGF Prague Championships

    CZ Event record 0–0

    • Gold

  4. TATAMY 19: Czech Open Championship (kids)

    CZ Event record 0–0

    • Place 4

  5. TATAMY 18 KIDS (No-GI and GI round robin)

    CZ Event record 0–0

    • Place 5

12-month performance profile

How the results were achieved

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

Ways of winning

  • Submission 0 0%
  • Points 1 100%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
-
Record
-
Win rate
-
Submission share
-

No-Gi

Rating
1234
Record
1–0
Win rate
100%
Submission share
0%

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
1,234
Change over 90 days
+31
Highest rating in 12 months
1,339
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,187
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
0%
Effective evidence
1
Confidence
28/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Recent tournaments

  1. Pardubice Grappling Open vol.6

    April 11, 2026
    No-Gi 0–0

  2. TATAMY 20: PRAGUE - KIDS (round robin)

    March 21, 2026
    No-Gi 0–0

  3. 2026 AGF Prague Championships

    March 7, 2026
    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 1,234

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.

July 2026 No new matches Change 0 Rating 1,234

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.

June 2026 No new matches Change 0 Rating 1,234

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.

May 2026 No new matches Change 0 Rating 1,234

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.

April 2026 No new matches · 2 left period Change -30 Rating 1,234

Rating-period composition

Rating matches
1 -2
Record
1–0 Previous month 2–1
Opponents
1 -2
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.

March 2026 No new matches Change -2 Rating 1,264

Rating-period composition

Rating matches
3 0
Record
2–1 Previous month 2–1
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.

February 2026 No new matches Change -1 Rating 1,266

Rating-period composition

Rating matches
3 0
Record
2–1 Previous month 2–1
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 · 6 left period Change -75 Rating 1,267

Rating-period composition

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

6 older matches left the 12-month period: 4 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

December 2025 No new matches Change +3 Rating 1,342

Rating-period composition

Rating matches
9 0
Record
6–3 Previous month 6–3
Opponents
9 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.

November 2025 1 new match Change +30 Rating 1,339

Rating-period composition

Rating matches
9 +1
Record
6–3 Previous month 5–3
Opponents
9 +1
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
November 23, 2025 Unknown opponent
ADCC Czech National Championship 2025 Boys Junior / 15-17 years / Intermediate / -60 kg
Method Points 05:00 0–0
Marginal influence +52
October 2025 No new matches Change +4 Rating 1,309

Rating-period composition

Rating matches
8 0
Record
5–3 Previous month 5–3
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.

September 2025 No new matches Change -3 Rating 1,305

Rating-period composition

Rating matches
8 0
Record
5–3 Previous month 5–3
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.

Relevant matches
1
Official ranking percentile
-
Performance
-

1 weighted matches against 1 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,187
Repeated-opponent share
0.0%
Network connectivity
80.9%

Classification evidence

Why ≤ 60 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

  • ≤ 60 kg 1 competition event Selected outcome

Registrations and outcomes

Pardubice Grappling Open vol.6
Does not count
Men No-GI / Intermediate / -66 kg
  • Registered weight class: -66 kg
  • Source competition limit: -66 kg

No matches in the rating period · no valid weight evidence

TATAMY 20: PRAGUE - KIDS (round robin)
Does not count
Kids / No Gi / 15-18 years / Boys / Intermediate / -70 kg
  • Registered weight class: -70 kg
  • Source competition limit: -70 kg

No matches in the rating period · no valid weight evidence

2026 AGF Prague Championships
Does not count
No Gi Juveniles - Adults / Male / Juvenile / Blue / Light Feather (Up to 65.80 kg)
  • Registered weight class: Light Feather (Up to 65.80 kg)
  • Source competition limit: Light Feather (Up to 65.80 kg)

No matches in the rating period · no valid weight evidence

TATAMY 19: Czech Open Championship (kids)
Does not count
Kids / No Gi / 15-18 years / Boys / Intermediate / -65 kg
  • Registered weight class: -65 kg
  • Source competition limit: -65 kg

No matches in the rating period · no valid weight evidence

TATAMY 18 KIDS (No-GI and GI round robin)
Does not count
Kids / No Gi / 15-18 years / Boys / Intermediate / -70 kg
  • Registered weight class: -70 kg
  • Source competition limit: -70 kg

No matches in the rating period · no valid weight evidence

ADCC Czech National Championship 2025
≤ 60 kg · Counts as a competition event
Boys Junior / 15-17 years / Intermediate / -60 kg
  • Registered weight class: -60 kg
  • Source competition limit: -60 kg

1 match in the rating period

Ground Bjj Tour 4. - Only submission - Kladno
Does not count
Kluci (15, 16, 17 let) /Grappling/NoGi / -73 kg
  • Registered weight class: -73 kg
  • Source competition limit: -73 kg

No matches in the rating period · no valid weight evidence

TATAMY 16 KIDS (No-GI and GI round robin)
Does not count
Kids / No Gi / 15-18 years / Boys / Beginner / -65 kg
  • Registered weight class: -65 kg
  • Source competition limit: -65 kg

No matches in the rating period · no valid weight evidence