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Amaru Berkhout

Gracie Jiu-Jitsu Alkmaar

W–L
1–1
Won and lost rating-eligible matches in the past 12 months.
Gi
-
Rating based on Gi matches in the past 12 months.
No-Gi
1,189
Rating based on No-Gi matches in the past 12 months.
Current form
1–1
Results from the ten most recent rating-eligible matches.
Opponents
2
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
0
Silver
1
Bronze
0
Total medals
1
Events with results
4

Full career record

Wins
4
Losses
8
Matches
12
Win rate
33.3%

Ways of winning

Submission
0
Points
3
Decision
0
Disqualification
0

Personal records

Longest winning streak
2

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
1
Unique opponents
2
Distinct events
1

Ways of winning

  • Submission 0 0%
  • Points 1 100%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
-
Record
-
Win rate
-
Submission share
-

No-Gi

Rating
1189
Record
1–1
Win rate
50%
Submission share
0%

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
1,189
Change over 90 days
+78
Highest rating in 12 months
1,266
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,307
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
0%
Effective evidence
1.7
Confidence
36/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1395 Rio Schouten · 2025 NO GI International Veluwe Open Jiu Jitsu Championship Pts 9–0

Full career

  1. #1100 Macey De Vos · Nijmegen Open BJJ 2025 Pts 2–0
  2. #1348 Oden Schouten · Lion Cub Jiu Jitsu Competition 3 Pts 4–2
  3. #1395 Rio Schouten · 2025 NO GI International Veluwe Open Jiu Jitsu Championship Pts 9–0

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 1,189

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
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 1,189

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
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 1,189

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
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 · 3 left period Change -74 Rating 1,190

Rating-period composition

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

3 older matches left the 12-month period: 1 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 -2 Rating 1,264

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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 No new matches Change 0 Rating 1,266

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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.

February 2026 No new matches Change 0 Rating 1,266

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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.

January 2026 No new matches Change 0 Rating 1,266

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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.

December 2025 No new matches Change 0 Rating 1,266

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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.

November 2025 No new matches Change 0 Rating 1,266

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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.

October 2025 2 new matches · 3 left period Change +79 Rating 1,266

Rating-period composition

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

3 older matches left the 12-month period: 1 won and 2 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
October 18, 2025 Rio Schouten
2025 NO GI International Veluwe Open Jiu Jitsu Championship Kids No-gi / 5 - 7 years / Grey & White / -24 kg & -27 kg
Method Points 02:00 9–0
Marginal influence +35
Loss
October 18, 2025 Yago Diniz De Araujo
2025 NO GI International Veluwe Open Jiu Jitsu Championship Kids No-gi / 5 - 7 years / Grey & White / -24 kg & -27 kg
Method Points 02:00 0–6
Marginal influence -48
September 2025 No new matches Change -1 Rating 1,187

Rating-period composition

Rating matches
6 0
Record
2–4 Previous month 2–4
Opponents
6 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
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
1,307
Repeated-opponent share
0.0%
Network connectivity
87.6%

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

2025 NO GI International Veluwe Open Jiu Jitsu Championship
U10 · Counts
Kids No-gi / 5 - 7 years / Grey & White / -24 kg & -27 kg
  • Competition age 7
  • Registered age: u8
  • Source category: u8

Classification evidence

Why ≤ 24 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

  • ≤ 24 kg 1 competition event Selected outcome

Registrations and outcomes

2025 NO GI International Veluwe Open Jiu Jitsu Championship
≤ 24 kg · Counts as a competition event
Kids No-gi / 5 - 7 years / Grey & White / -24 kg & -27 kg
  • Registered weight class: -24 kg
  • Source competition limit: -24 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

2025 NO GI International Veluwe Open Jiu Jitsu Championship
grey · Counts as a match
Kids No-gi / 5 - 7 years / Grey & White / -24 kg & -27 kg
  • Source belt category: grey

2 matches in the rating period