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Willem Kriesten

Virtus Jiu-Jitsu

W–L
0–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,128
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
0–2
Results from the ten most recent rating-eligible matches.
Opponents
2
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

6
Indexed competition matches
Date Opponent Result Event Division
2026-08-22 Ikram Ryuto Tanaka
Win
KARL MARX CUP: BRAZILIAN JIU-JITSU GI & NO-GI ROUND ROBIN TURNIER youth_ratings.formats.conflict · MIGHTY MITTE II Boys / bis 27Kg (Lightweight)
2026-08-22 Kilian Demaj
Loss
KARL MARX CUP: BRAZILIAN JIU-JITSU GI & NO-GI ROUND ROBIN TURNIER youth_ratings.formats.conflict · MIGHTY MITTE II Boys / bis 27Kg (Lightweight)
2026-08-22 Rodger Einenkel
Loss
KARL MARX CUP: BRAZILIAN JIU-JITSU GI & NO-GI ROUND ROBIN TURNIER youth_ratings.formats.conflict · MIGHTY MITTE II Boys / bis 27Kg (Lightweight)
2026-08-22 Artemij Winizki
Win
KARL MARX CUP: BRAZILIAN JIU-JITSU GI & NO-GI ROUND ROBIN TURNIER youth_ratings.formats.conflict · MIGHTY MITTE II Boys / bis 27Kg (Lightweight)
2026-04-11 Yakup Yildiz
Loss
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Gi · Boys Gi (under 16 y.o.) / Grey / 6-7 years / -23 kg
2026-04-11 Yusuf Söyleyen
Loss
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Gi · Boys Gi (under 16 y.o.) / Grey / 6-7 years / -23 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 +6 Rating 1,128

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.

July 2026 No new matches Change 0 Rating 1,122

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.

June 2026 No new matches Change +1 Rating 1,122

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.

May 2026 No new matches Change +1 Rating 1,121

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.

April 2026 2 new matches Change Starting point Rating 1,120

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 11, 2026 Yakup Yildiz
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Boys Gi (under 16 y.o.) / Grey / 6-7 years / -23 kg
Method Submission 00:20 0–6
Marginal influence -21
Loss
April 11, 2026 Yusuf Söyleyen
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi Boys Gi (under 16 y.o.) / Grey / 6-7 years / -23 kg
Method Submission 00:55 0–8
Marginal influence -37
Relevant matches
1.7
Official ranking percentile
-
Performance
-

1.7 weighted matches against 2 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,500
Repeated-opponent share
0.0%
Network connectivity
87.6%

Classification evidence

Why U8?

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

  • U8 1 event vote Selected outcome

Registrations and outcomes

KARL MARX CUP: BRAZILIAN JIU-JITSU GI & NO-GI ROUND ROBIN TURNIER
Does not count
MIGHTY MITTE II Boys / bis 27Kg (Lightweight)
  • Competition age 7
  • Registered age: u10
  • Source category: u10
Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
U8 · Counts
Boys Gi (under 16 y.o.) / Grey / 6-7 years / -23 kg
  • Competition age 7
  • Registered age: u8
  • Source category: u8

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

KARL MARX CUP: BRAZILIAN JIU-JITSU GI & NO-GI ROUND ROBIN TURNIER
Does not count
MIGHTY MITTE II Boys / bis 27Kg (Lightweight)

No matches in the rating period · no valid weight evidence

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
≤ 23 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Grey / 6-7 years / -23 kg
  • Registered weight class: -23 kg
  • Source competition limit: -23 kg

2 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 2 matches in the rating period Selected outcome

Registrations and outcomes

Fennec BJJ Kids Cup Vol. 9 Gi & NoGi
grey · Counts as a match
Boys Gi (under 16 y.o.) / Grey / 6-7 years / -23 kg
  • Source belt category: grey

2 matches in the rating period