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David Grgula

Choketopus gym

W–L
3–1
Won and lost rating-eligible matches in the past 12 months.
Gi
1,300
Rating based on Gi matches in the past 12 months.
No-Gi
-
Rating based on No-Gi matches in the past 12 months.
Current form
3–4
Results from the ten most recent rating-eligible matches.
Opponents
4
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

8
Indexed competition matches
Date Opponent Result Event Division
2026-09-05 Yaroslav Solovei
Loss
GRIND 14 Kids Gi · Gi / 13-14 years / Boy / -55 kg / Beginner
2026-09-05 Adam Bartoš
Loss
GRIND 14 Kids Gi · Gi / 13-14 years / Boy / -55 kg / Beginner
2026-09-05 Zdeněk Vlček
Loss
GRIND 14 Kids Gi · Gi / 13-14 years / Boy / -55 kg / Beginner
2026-04-25 Tobiáš Podroužek
Loss
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi · Gi / 13-14 years / Boy / -55 kg / Beginner
2026-04-25 Adam Bartoš
Win
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi · Gi / 13-14 years / Boy / -55 kg / Beginner
2026-01-24 Kryštof Ladýř
Win
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi · Gi / 13-14 years / Boy / -50 kg / Beginner
2026-01-24 William Glan
Win
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi · Gi / 13-14 years / Boy / -50 kg / Beginner
2026-01-24 Eliáš Fuccillo
Win
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi · Gi / 13-14 years / Boy / -50 kg / Beginner

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 1,300

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

July 2026 No new matches Change 0 Rating 1,300

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

June 2026 No new matches Change +6 Rating 1,300

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

May 2026 No new matches Change -1 Rating 1,294

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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.

April 2026 2 new matches Change +11 Rating 1,295

Rating-period composition

Rating matches
4 +2
Record
3–1 Previous month 2–0
Opponents
4 +2
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 25, 2026 Tobiáš Podroužek
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -55 kg / Beginner
Method Points 04:00 2–12
Marginal influence -52
Win
April 25, 2026 Adam Bartoš
GRIND 13 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -55 kg / Beginner
Method Points 04:00 9–4
Marginal influence +27
March 2026 No new matches Change +1 Rating 1,284

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 No new matches Change 0 Rating 1,283

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.

January 2026 2 new matches Change Starting point Rating 1,283

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
January 24, 2026 Kryštof Ladýř
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -50 kg / Beginner
Method Submission 02:10 8–0
Marginal influence +26
Win
January 24, 2026 Eliáš Fuccillo
GRIND 12 Kids (NO-GI & GI ROUND ROBIN) Gi / 13-14 years / Boy / -50 kg / Beginner
Method Submission 02:00 4–0
Marginal influence +38
Relevant matches
3.4
Official ranking percentile
-
Performance
-

3.4 weighted matches against 4 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,220
Repeated-opponent share
0.0%
Network connectivity
80.9%

Classification evidence

Why U16?

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

  • U16 2 event votes Selected outcome

Registrations and outcomes

GRIND 13 Kids (NO-GI & GI ROUND ROBIN)
U16 · Counts
Gi / 13-14 years / Boy / -55 kg / Beginner
  • Competition age 14
GRIND 12 Kids (NO-GI & GI ROUND ROBIN)
U16 · Counts
Gi / 13-14 years / Boy / -50 kg / Beginner
  • Competition age 14

Classification evidence

Why ≤ 50 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

  • ≤ 50 kg 1 competition event Selected outcome
  • ≤ 55 kg 2 competition events

Registrations and outcomes

GRIND 13 Kids (NO-GI & GI ROUND ROBIN)
≤ 55 kg · Counts as a competition event
Gi / 13-14 years / Boy / -55 kg / Beginner
  • Registered weight class: -55 kg
  • Source competition limit: -55 kg

2 matches in the rating period

GRIND 12 Kids (NO-GI & GI ROUND ROBIN)
≤ 50 kg · Counts as a competition event
Gi / 13-14 years / Boy / -50 kg / Beginner
  • Registered weight class: -50 kg
  • Source competition limit: -50 kg

2 matches in the rating period