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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.

Honours

Medals and placements

Gold
1
Silver
4
Bronze
1
Total medals
6
Events with results
5

Full career record

Wins
9
Losses
5
Matches
14
Win rate
64.3%

Ways of winning

Submission
2
Points
3
Decision
2
Disqualification
1
Other recorded result
1

Personal records

Longest winning streak
3
Longest submission streak
1
Longest gold streak
1

Recent recorded placements

  1. GRIND 14 Kids

    CZ Event record 1–1

    • No-Gi / 13-14 years / Boy / -50 kg / Advanced

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
1
Unique opponents
8
Distinct events
4

Ways of winning

  • Submission 2 22%
  • Points 3 33%
  • Decision 2 22%
  • Other recorded result 2 22%

Gi versus No-Gi

Gi

Rating
1305
Record
3–1
Win rate
75%
Submission share
0%

No-Gi

Rating
1325
Record
5–3
Win rate
63%
Submission share
33%

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
1,384
Change over 90 days
+61
Highest rating in 12 months
1,385
Performance versus expectation
+14.6 pp
Schedule strength
Top 59%
Average opponent rating
1,305
Weighted win rate
66%
Expected win rate
52%
Repeat-opponent share
33%
Effective evidence
8.2
Confidence
86/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 4–3 4–3 across 7 rematches against 3 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #879 Maksym Dobei · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Pts 0–0 Earlier · — 0–0 October 18, 2025 · CZECH FIGHTING SERIES 11, Samurai Cup 2025
  2. #1814 Jakub Zadina · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 0–0 Earlier · Pts 2–0 March 21, 2026 · TATAMY 20: PRAGUE - KIDS (round robin)
  3. #2913 Filip Linka · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 0–0

Full career

  1. #879 Maksym Dobei · CZECH FIGHTING SERIES 11, Samurai Cup 2025 Pts 0–0 Earlier · — 0–0 October 18, 2025 · CZECH FIGHTING SERIES 11, Samurai Cup 2025
  2. #1814 Jakub Zadina · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 0–0 Earlier · Pts 2–0 March 21, 2026 · TATAMY 20: PRAGUE - KIDS (round robin)
  3. #2913 Filip Linka · CFS 13 CZECH CHAMPIONSHIP ČSAKJ 2026 Dec 0–0

Rivals

Opponent Head-to-head record Matches
Jakub Zadina 2–0 2
Maksym Dobei 2–0 2

Around this athlete

Athlete Rank Rating
Nayah Hoard #968 1,384
David Seifert #969 1,384

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 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