TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
CH

Oliver Kogan

Tiago De Paula BJJ Team

W–L
2–1
Won and lost rating-eligible matches in the past 12 months.
Gi
1,269
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
2–1
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

10
Indexed competition matches
Date Opponent Result Event Division
2026-03-21 Maurick Willemstein
Win
Zurich BJJ SPRING OPEN GI and NO-GI 2026 Gi · BOYS GI / Kids 2 / Grey / -23kg
2026-03-21 Tymur Kozyriatskyi
Loss
Zurich BJJ SPRING OPEN GI and NO-GI 2026 Gi · BOYS GI / Kids 2 / Grey / -23kg
2026-03-21 Sergej Zrnic
Win
Zurich BJJ SPRING OPEN GI and NO-GI 2026 Gi · BOYS GI / Kids 2 / Grey / -23kg
2025-06-14 Tymur Kozyriatskyi
Loss
Zurich BJJ SUMMER OPEN GI - Children, Adults and Masters 2025 Gi · BOYS GI / Kids 2 / White / -20kg
2025-06-14 Deni Estamirov
Win
Zurich BJJ SUMMER OPEN GI - Children, Adults and Masters 2025 Gi · BOYS GI / Kids 2 / White / -20kg
2025-06-14 Elias Edroos
Win
Zurich BJJ SUMMER OPEN GI - Children, Adults and Masters 2025 Gi · BOYS GI / Kids 2 / White / -20kg
2025-03-15 Tymur Kozyriatskyi
Loss
ZURICH BJJ SPRING OPEN Gi · BOYS GI / Kids 2 / White / -20kg
2025-03-15 Deni Estamirov
Win
ZURICH BJJ SPRING OPEN Gi · BOYS GI / Kids 2 / White / -20kg
2024-11-16 Hades Alimi
Loss
ZURICH BJJ AUTUMN OPEN Gi · BOYS GI / Kids 2 / White / -20kg
2024-11-16 Sergej Zrnic
Win
ZURICH BJJ AUTUMN OPEN Gi · BOYS GI / Kids 2 / White / -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 1,269

Rating-period composition

Rating matches
3 0
Record
2–1 Previous month 2–1
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 1,269

Rating-period composition

Rating matches
3 0
Record
2–1 Previous month 2–1
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 · 3 left period Change -79 Rating 1,269

Rating-period composition

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

3 older matches left the 12-month period: 2 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 Change +1 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.

April 2026 No new matches Change +6 Rating 1,347

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 3 new matches · 2 left period Change +63 Rating 1,341

Rating-period composition

Rating matches
6 +1
Record
4–2 Previous month 3–2
Opponents
5 +2
Events
2 0

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.

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 Maurick Willemstein
Zurich BJJ SPRING OPEN GI and NO-GI 2026 BOYS GI / Kids 2 / Grey / -23kg
Method Points 02:00 3–2
Marginal influence +37
Loss
March 21, 2026 Tymur Kozyriatskyi
Zurich BJJ SPRING OPEN GI and NO-GI 2026 BOYS GI / Kids 2 / Grey / -23kg
Method Submission 00:08 0–0
Marginal influence -35
Win
March 21, 2026 Sergej Zrnic
Zurich BJJ SPRING OPEN GI and NO-GI 2026 BOYS GI / Kids 2 / Grey / -23kg
Method Points 02:00 15–1
Marginal influence +35
February 2026 No new matches Change 0 Rating 1,278

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
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 1,278

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
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 0 Rating 1,278

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
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 No new matches · 2 left period Change -18 Rating 1,278

Rating-period composition

Rating matches
5 -2
Record
3–2 Previous month 4–3
Opponents
3 -2
Events
2 -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.

October 2025 No new matches Change 0 Rating 1,296

Rating-period composition

Rating matches
7 0
Record
4–3 Previous month 4–3
Opponents
5 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.

September 2025 No new matches Change 0 Rating 1,296

Rating-period composition

Rating matches
7 0
Record
4–3 Previous month 4–3
Opponents
5 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.

Relevant matches
2.3
Official ranking percentile
-
Performance
-

2.3 weighted matches against 3 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,256
Repeated-opponent share
0.0%
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

Zurich BJJ SPRING OPEN GI and NO-GI 2026
U10 · Counts
BOYS GI / Kids 2 / Grey / -23kg
  • Competition age 8
  • Registered age: u10
  • Source category: u10

Classification evidence

Why ≤ 23 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

  • ≤ 23 kg 1 competition event Selected outcome

Registrations and outcomes

Zurich BJJ SPRING OPEN GI and NO-GI 2026
≤ 23 kg · Counts as a competition event
BOYS GI / Kids 2 / Grey / -23kg
  • Registered weight class: -23kg
  • Source competition limit: -23kg

3 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 3 matches in the rating period Selected outcome

Registrations and outcomes

Zurich BJJ SPRING OPEN GI and NO-GI 2026
grey · Counts as a match
BOYS GI / Kids 2 / Grey / -23kg
  • Source belt category: grey

3 matches in the rating period