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CZ

David Kalous

SAMURAI FIGHT CLUB

W–L
2–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,246
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
2–2
Results from the ten most recent rating-eligible matches.
Opponents
3
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

6
Indexed competition matches
Date Opponent Result Event Division
2025-10-18 Václav Krištof
Loss
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Gi · Grappling Gi / U12 Děti chlapci / -25 kg
2025-10-18 Josef Vrága
Loss
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Gi · Grappling Gi / U12 Děti chlapci / -25 kg
2025-10-18 Václav Krištof
Win
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Gi · Kids Run / TIGERS 4-6 let / -130 cm
2025-10-18 Jaroslav Novotný Jr
Win
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Gi · Kids Run / TIGERS 4-6 let / -130 cm
2025-05-31 Elin Kofroňová
Win
Ground Bjj Tour 3. - only submission - Kladno Gi · Kids mix 5,6,7-8 let / -20kg
2025-05-31 Alvin Polikarpov
Win
Ground Bjj Tour 3. - only submission - Kladno Gi · Kids mix 5,6,7-8 let / -20kg

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 1,246

Rating-period composition

Rating matches
4 0
Record
2–2 Previous month 2–2
Opponents
3 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 1,246

Rating-period composition

Rating matches
4 0
Record
2–2 Previous month 2–2
Opponents
3 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 1,246

Rating-period composition

Rating matches
4 0
Record
2–2 Previous month 2–2
Opponents
3 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 · 2 left period Change -102 Rating 1,246

Rating-period composition

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

2 older matches left the 12-month period: 2 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

April 2026 No new matches Change +11 Rating 1,348

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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.

March 2026 No new matches Change +18 Rating 1,337

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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 +14 Rating 1,319

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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 -3 Rating 1,305

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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 1,308

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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 +1 Rating 1,308

Rating-period composition

Rating matches
6 0
Record
4–2 Previous month 4–2
Opponents
5 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 4 new matches Change +28 Rating 1,307

Rating-period composition

Rating matches
6 +4
Record
4–2 Previous month 2–0
Opponents
5 +3
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
October 18, 2025 Václav Krištof
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling Gi / U12 Děti chlapci / -25 kg
Method Points 02:00 9–10
Marginal influence -24
Loss
October 18, 2025 Josef Vrága
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Grappling Gi / U12 Děti chlapci / -25 kg
Method Submission 02:00 2–14
Marginal influence -23
Win
October 18, 2025 Václav Krištof
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Kids Run / TIGERS 4-6 let / -130 cm
Method Points 0–0
Marginal influence +37
Win
October 18, 2025 Jaroslav Novotný Jr
CZECH FIGHTING SERIES 11, Samurai Cup 2025 Kids Run / TIGERS 4-6 let / -130 cm
Method Points 0–0
Marginal influence +29
September 2025 No new matches Change 0 Rating 1,279

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.

Relevant matches
2.4
Official ranking percentile
-
Performance
-

2.4 weighted matches against 3 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,341
Repeated-opponent share
25.0%
Network connectivity
80.9%

Classification evidence

Why U10?

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

  • U10 1 event vote Selected outcome

Registrations and outcomes

CZECH FIGHTING SERIES 11, Samurai Cup 2025
U10 · Counts
Kids Run / TIGERS 4-6 let / -130 cm
  • Competition age 7
  • Registered age: u8
  • Source category: u8
Grappling Gi / U12 Děti chlapci / -25 kg
  • Competition age 7
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 25 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

  • ≤ 25 kg 1 competition event Selected outcome

Registrations and outcomes

CZECH FIGHTING SERIES 11, Samurai Cup 2025
Does not count
Kids Run / TIGERS 4-6 let / -130 cm

2 matches in the rating period · weight class could not be normalized reliably

CZECH FIGHTING SERIES 11, Samurai Cup 2025
≤ 25 kg · Counts as a competition event
Grappling Gi / U12 Děti chlapci / -25 kg
  • Registered weight class: -25 kg
  • Source competition limit: -25 kg

2 matches in the rating period