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Sergei Chernyaev

Ratiborets Vienna

W–L
6–4
Won and lost rating-eligible matches in the past 12 months.
Gi
1,321
Rating based on Gi matches in the past 12 months.
No-Gi
1,208
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
7
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

14
Indexed competition matches
Date Opponent Result Event Division
2025-12-06 Andrej Scharringer
Win
TATAMY 18 KIDS (No-GI and GI round robin) Gi · Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
2025-12-06 Samuel Kulak
Win
TATAMY 18 KIDS (No-GI and GI round robin) Gi · Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
2025-12-06 Matyas Ursacher
Loss
TATAMY 18 KIDS (No-GI and GI round robin) Gi · Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
2025-12-06 Richard Černohous
Win
TATAMY 18 KIDS (No-GI and GI round robin) Gi · Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
2025-12-06 Richard Černohous
Win
TATAMY 18 KIDS (No-GI and GI round robin) Gi · Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
2025-12-06 Michal Studnica
Loss
TATAMY 18 KIDS (No-GI and GI round robin) No-Gi · Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
2025-12-06 Ivo Chmelař
Loss
TATAMY 18 KIDS (No-GI and GI round robin) No-Gi · Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
2025-12-06 Malik Dolguev
Win
TATAMY 18 KIDS (No-GI and GI round robin) No-Gi · Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
2025-12-06 Michal Studnica
Loss
TATAMY 18 KIDS (No-GI and GI round robin) No-Gi · Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
2025-12-06 Richard Černohous
Win
TATAMY 18 KIDS (No-GI and GI round robin) No-Gi · Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
2025-06-29 Damian Saracinov
Loss
ADCC AUSTRIAN OPEN 2025 No-Gi · Boys 13-14 years / Beginner / -50 kg
2025-06-29 Asadullah Hamza Khashev
Win
ADCC AUSTRIAN OPEN 2025 No-Gi · Boys 13-14 years / Beginner / -50 kg
2025-05-17 Unknown User
Loss
Vienna Open Championship 2025 - Offene Wiener Landesmeisterschaft 2025 No-Gi · Jiu Jitsu No Gi (BJJ No Gi) - Male / U16 / White Belt / -44 kg
2025-05-17 Unknown User
Loss
Vienna Open Championship 2025 - Offene Wiener Landesmeisterschaft 2025 No-Gi · Jiu Jitsu No Gi (BJJ No Gi) - Male / U16 / White Belt / -44 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 1,343

Rating-period composition

Rating matches
10 0
Record
6–4 Previous month 6–4
Opponents
7 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 -1 Rating 1,343

Rating-period composition

Rating matches
10 0
Record
6–4 Previous month 6–4
Opponents
7 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 · 2 left period Change -4 Rating 1,344

Rating-period composition

Rating matches
10 -2
Record
6–4 Previous month 7–5
Opponents
7 -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.

May 2026 No new matches · 2 left period Change +35 Rating 1,348

Rating-period composition

Rating matches
12 -2
Record
7–5 Previous month 7–7
Opponents
9 -1
Events
2 -1

2 older matches left the 12-month period: 0 won and 2 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 -1 Rating 1,313

Rating-period composition

Rating matches
14 0
Record
7–7 Previous month 7–7
Opponents
10 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.

March 2026 No new matches Change -5 Rating 1,314

Rating-period composition

Rating matches
14 0
Record
7–7 Previous month 7–7
Opponents
10 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.

February 2026 No new matches Change +6 Rating 1,319

Rating-period composition

Rating matches
14 0
Record
7–7 Previous month 7–7
Opponents
10 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.

January 2026 No new matches Change +4 Rating 1,313

Rating-period composition

Rating matches
14 0
Record
7–7 Previous month 7–7
Opponents
10 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.

December 2025 10 new matches Change +131 Rating 1,309

Rating-period composition

Rating matches
14 +10
Record
7–7 Previous month 1–3
Opponents
10 +7
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
December 6, 2025 Andrej Scharringer
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
Method Points 04:00 2–0
Marginal influence +16
Win
December 6, 2025 Samuel Kulak
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
Method Submission 03:15 0–0
Marginal influence +24
Loss
December 6, 2025 Matyas Ursacher
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
Method Decision 04:00 0–0
Marginal influence -16
Win
December 6, 2025 Richard Černohous
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
Method Decision 04:00 2–2
Marginal influence +17
Win
December 6, 2025 Richard Černohous
TATAMY 18 KIDS (No-GI and GI round robin) Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
Method Points 04:00 5–0
Marginal influence +17
Loss
December 6, 2025 Michal Studnica
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
Method Decision 04:00 0–0
Marginal influence -20
Loss
December 6, 2025 Ivo Chmelař
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
Method Submission 02:35 0–0
Marginal influence -15
Win
December 6, 2025 Malik Dolguev
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
Method Points 04:00 5–0
Marginal influence +3
Loss
December 6, 2025 Michal Studnica
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
Method Decision 01:58 0–0
Marginal influence -20
Win
December 6, 2025 Richard Černohous
TATAMY 18 KIDS (No-GI and GI round robin) Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
Method Submission 02:36 0–0
Marginal influence +13
November 2025 No new matches Change 0 Rating 1,178

Rating-period composition

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

October 2025 No new matches Change 0 Rating 1,178

Rating-period composition

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

September 2025 No new matches Change -1 Rating 1,178

Rating-period composition

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

Relevant matches
5.9
Official ranking percentile
-
Performance
-

5.9 weighted matches against 7 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,300
Repeated-opponent share
30.0%
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 1 event vote Selected outcome

Registrations and outcomes

TATAMY 18 KIDS (No-GI and GI round robin)
U16 · Counts
Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
  • Competition age 14
Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
  • Competition age 14

Classification evidence

Why ≤ 55 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

  • ≤ 55 kg 1 competition event Selected outcome

Registrations and outcomes

TATAMY 18 KIDS (No-GI and GI round robin)
≤ 55 kg · Counts as a competition event
Kids / No Gi / 13-14 years / Boys / Beginner / -55 kg
  • Registered weight class: -55 kg
  • Source competition limit: -55 kg

5 matches in the rating period

TATAMY 18 KIDS (No-GI and GI round robin)
≤ 55 kg · Counts as a competition event
Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
  • Registered weight class: -55 kg
  • Source competition limit: -55 kg

5 matches in the rating period

Classification evidence

Why Grey?

This outcome uses the belt category of every rating-eligible match from 2025-09-01 through 2026-08-31. The most-fought category is selected; the newest evidence breaks a tie.

Evidence outcome

  • grey 5 matches in the rating period Selected outcome

Registrations and outcomes

TATAMY 18 KIDS (No-GI and GI round robin)
grey · Counts as a match
Kids / Gi / 13-14 years / Boys / White/grey belt / -55 kg
  • Source belt category: grey

5 matches in the rating period