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David Seifert

Glory Fight Club Chomutov

W–L
8–4
Won and lost rating-eligible matches in the past 12 months.
Gi
1,305
Rating based on Gi matches in the past 12 months.
No-Gi
1,325
Rating based on No-Gi matches in the past 12 months.
Current form
6–4
Results from the ten most recent rating-eligible matches.
Opponents
8
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

5
Events
Date Event Result Format Division
GRIND 14 Kids CZ · No-Gi · 13–14 yo · ≤50 kg 1–1 W–L: Win / Loss No-Gi
  • No-Gi / 13-14 years / Boy / -50 kg / Advanced
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 CZ · No-Gi · U15 · ≤45 kg ; Gi · U15 · ≤45 kg 4–2 W–L: Win / Loss GiNo-Gi
  • Grappling NoGi / U15 Junioři chlapci / -45 kg
  • MMA Light / U15 Junioři chlapci / -45 kg
TATAMY 20: PRAGUE - KIDS (round robin) CZ · No-Gi · 13–14 yo · ≤45 kg 1–1 W–L: Win / Loss No-Gi
  • Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
TATAMY 17 KIDS (No-GI and GI round robin) CZ · No-Gi · 13–14 yo · ≤45 kg 1–1 W–L: Win / Loss No-Gi
  • Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
CZECH FIGHTING SERIES 11, Samurai Cup 2025 CZ · Gi · U15 · ≤45 kg 2–0 W–L: Win / Loss Gi
  • MMA Light / U15 Junioři chlapci / -45 kg

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 1,384

Rating-period composition

Rating matches
12 0
Record
8–4 Previous month 8–4
Opponents
8 0
Events
4 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 1,384

Rating-period composition

Rating matches
12 0
Record
8–4 Previous month 8–4
Opponents
8 0
Events
4 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 +1 Rating 1,384

Rating-period composition

Rating matches
12 0
Record
8–4 Previous month 8–4
Opponents
8 0
Events
4 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 -2 Rating 1,383

Rating-period composition

Rating matches
12 0
Record
8–4 Previous month 8–4
Opponents
8 0
Events
4 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

April 2026 6 new matches Change +67 Rating 1,385

Rating-period composition

Rating matches
12 +6
Record
8–4 Previous month 4–2
Opponents
8 +3
Events
4 +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
April 12, 2026 Jakub Zadina
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U15 Junioři chlapci / -45 kg
Method Decision 0–0
Marginal influence +12
Win
April 12, 2026 Filip Linka
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U15 Junioři chlapci / -45 kg
Method Decision 0–0
Marginal influence +10
Loss
April 12, 2026 Unknown opponent
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 MMA Light / U15 Junioři chlapci / -45 kg
Method Points 02:00 0–1
Marginal influence -9
Win
April 12, 2026 Serhii Zhyla
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 MMA Light / U15 Junioři chlapci / -45 kg
Method Points 01:17 1–0
Marginal influence +9
Loss
April 12, 2026 Unknown opponent
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U15 Junioři chlapci / -45 kg
Method Submission 00:32 0–0
Marginal influence -12
Win
April 12, 2026 Lukáš Kasík
CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Grappling NoGi / U15 Junioři chlapci / -45 kg
Method Submission 01:21 4–0
Marginal influence +11
March 2026 2 new matches Change -2 Rating 1,318

Rating-period composition

Rating matches
6 +2
Record
4–2 Previous month 3–1
Opponents
5 +2
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
March 21, 2026 Jakub Zadina
TATAMY 20: PRAGUE - KIDS (round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
Method Points 04:00 2–0
Marginal influence +14
Loss
March 21, 2026 Nikolas Soudný
TATAMY 20: PRAGUE - KIDS (round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
Method Decision 04:00 0–0
Marginal influence -24
February 2026 No new matches Change -5 Rating 1,320

Rating-period composition

Rating matches
4 0
Record
3–1 Previous month 3–1
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 Change 0 Rating 1,325

Rating-period composition

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

December 2025 No new matches Change +1 Rating 1,325

Rating-period composition

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

November 2025 2 new matches Change +38 Rating 1,324

Rating-period composition

Rating matches
4 +2
Record
3–1 Previous month 2–0
Opponents
3 +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.
Win
November 1, 2025 David Sevcenko
TATAMY 17 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
Method Disqualification 03:47 2–0
Marginal influence +16
Loss
November 1, 2025 Unknown opponent
TATAMY 17 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
Method Submission 01:43 0–0
Marginal influence -15
October 2025 2 new matches Change Starting point Rating 1,286

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
October 18, 2025 Maksym Dobei
CZECH FIGHTING SERIES 11, Samurai Cup 2025 MMA Light / U15 Junioři chlapci / -45 kg
Method Points 0–0
Marginal influence +10
Win
October 18, 2025 Maksym Dobei
CZECH FIGHTING SERIES 11, Samurai Cup 2025 MMA Light / U15 Junioři chlapci / -45 kg
Method Other recorded result 0–0
Marginal influence +10
Relevant matches
8.2
Official ranking percentile
Top 32%
Performance
14.6 pp above expectation

8.2 weighted matches against 8 different opponents across 4 events

Weighted win rate
66.3%
Expected win rate
51.6%
Average opponent rating
1,305
Repeated-opponent share
33.3%
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

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
U16 · Counts
MMA Light / U15 Junioři chlapci / -45 kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16
Grappling NoGi / U15 Junioři chlapci / -45 kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16
TATAMY 20: PRAGUE - KIDS (round robin)
U16 · Counts
Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
  • Competition age 14
TATAMY 17 KIDS (No-GI and GI round robin)
Does not count
Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
  • Competition age 13
CZECH FIGHTING SERIES 11, Samurai Cup 2025
Does not count
MMA Light / U15 Junioři chlapci / -45 kg
  • Competition age 13
  • Registered age: u16
  • Source category: u16

Classification evidence

Why ≤ 45 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

  • ≤ 45 kg 2 competition events Selected outcome
  • ≤ 50 kg 1 competition event

Registrations and outcomes

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
≤ 45 kg · Counts as a competition event
MMA Light / U15 Junioři chlapci / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period

CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026
≤ 45 kg · Counts as a competition event
Grappling NoGi / U15 Junioři chlapci / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

4 matches in the rating period

TATAMY 20: PRAGUE - KIDS (round robin)
≤ 45 kg · Counts as a competition event
Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period

TATAMY 17 KIDS (No-GI and GI round robin)
≤ 45 kg · Does not count
Kids / No Gi / 13-14 years / Boys / Beginner / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period · outside the three most recent unambiguous events

CZECH FIGHTING SERIES 11, Samurai Cup 2025
≤ 45 kg · Does not count
MMA Light / U15 Junioři chlapci / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period · outside the three most recent unambiguous events