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Sergej Gekman

HAUSE739 JIU-JITSU

W–L
0–6
Won and lost rating-eligible matches in the past 12 months.
Gi
1,107
Rating based on Gi matches in the past 12 months.
No-Gi
1,120
Rating based on No-Gi matches in the past 12 months.
Current form
0–6
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

6
Indexed competition matches
Date Opponent Result Event Division
2026-04-18 Muhammad Grada
Loss
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP No-Gi · Boys No-Gi (under 16 y.o.) / White / 10-11 years / -38 kg
2026-04-18 Devin Özdemir
Loss
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP No-Gi · Boys No-Gi (under 16 y.o.) / White / 10-11 years / -38 kg
2026-04-18 Muhammad Grada
Loss
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Gi · Boys Gi (under 16 y.o.) / White / 10-11 years / -38 kg
2026-04-18 Devin Özdemir
Loss
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Gi · Boys Gi (under 16 y.o.) / White / 10-11 years / -38 kg
2025-12-20 Willi Hoppe
Loss
HANNOVER WINTER OPEN 2025 I EUROPEAN CUP Gi · Boys Gi (under 16 y.o.) / Grey / 12-13 years / -41 kg
2025-12-20 Colin Damm
Loss
HANNOVER WINTER OPEN 2025 I EUROPEAN CUP Gi · Boys Gi (under 16 y.o.) / Grey / 12-13 years / -41 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 +3 Rating 1,187

Rating-period composition

Rating matches
6 0
Record
0–6 Previous month 0–6
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 +1 Rating 1,184

Rating-period composition

Rating matches
6 0
Record
0–6 Previous month 0–6
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 +4 Rating 1,183

Rating-period composition

Rating matches
6 0
Record
0–6 Previous month 0–6
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 -4 Rating 1,179

Rating-period composition

Rating matches
6 0
Record
0–6 Previous month 0–6
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 4 new matches Change +75 Rating 1,183

Rating-period composition

Rating matches
6 +4
Record
0–6 Previous month 0–2
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 18, 2026 Muhammad Grada
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / White / 10-11 years / -38 kg
Method Submission 01:21 0–12
Marginal influence -2
Loss
April 18, 2026 Devin Özdemir
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / White / 10-11 years / -38 kg
Method Points 03:00 0–2
Marginal influence -5
Loss
April 18, 2026 Muhammad Grada
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / White / 10-11 years / -38 kg
Method Points 03:00 0–9
Marginal influence -10
Loss
April 18, 2026 Devin Özdemir
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / White / 10-11 years / -38 kg
Method Submission 01:22 0–4
Marginal influence -18
March 2026 No new matches Change +8 Rating 1,108

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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 1,100

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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 No new matches Change +4 Rating 1,100

Rating-period composition

Rating matches
2 0
Record
0–2 Previous month 0–2
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.

December 2025 2 new matches Change Starting point Rating 1,096

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
December 20, 2025 Willi Hoppe
HANNOVER WINTER OPEN 2025 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Grey / 12-13 years / -41 kg
Method Submission 01:26 0–2
Marginal influence -16
Loss
December 20, 2025 Colin Damm
HANNOVER WINTER OPEN 2025 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Grey / 12-13 years / -41 kg
Method Submission 00:28 0–0
Marginal influence -12
Relevant matches
5
Official ranking percentile
Top 89%
Performance
-

5 weighted matches against 4 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,450
Repeated-opponent share
33.3%
Network connectivity
87.6%

Classification evidence

Why U12?

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

  • U12 1 event vote Selected outcome

Registrations and outcomes

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U12 · Counts
Boys No-Gi (under 16 y.o.) / White / 10-11 years / -38 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / White / 10-11 years / -38 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
HANNOVER WINTER OPEN 2025 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / Grey / 12-13 years / -41 kg
  • Competition age 10
  • Registered age: u14
  • Source category: u14

Classification evidence

Why ≤ 38 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

  • ≤ 38 kg 1 competition event Selected outcome
  • ≤ 41 kg 1 competition event

Registrations and outcomes

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 38 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / White / 10-11 years / -38 kg
  • Registered weight class: -38 kg
  • Source competition limit: -38 kg

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 38 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / White / 10-11 years / -38 kg
  • Registered weight class: -38 kg
  • Source competition limit: -38 kg

2 matches in the rating period

HANNOVER WINTER OPEN 2025 I EUROPEAN CUP
≤ 41 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Grey / 12-13 years / -41 kg
  • Registered weight class: -41 kg
  • Source competition limit: -41 kg

2 matches in the rating period

Classification evidence

Why White?

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

  • white 4 matches in the rating period Selected outcome
  • grey 2 matches in the rating period

Registrations and outcomes

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
white · Counts as a match
Boys No-Gi (under 16 y.o.) / White / 10-11 years / -38 kg
  • Source belt category: white

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
white · Counts as a match
Boys Gi (under 16 y.o.) / White / 10-11 years / -38 kg
  • Source belt category: white

2 matches in the rating period

HANNOVER WINTER OPEN 2025 I EUROPEAN CUP
grey · Counts as a match
Boys Gi (under 16 y.o.) / Grey / 12-13 years / -41 kg
  • Source belt category: grey

2 matches in the rating period