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NL

Amaya Ziamari

Amersfoort BJJ

W–L
2–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,232
Rating based on Gi matches in the past 12 months.
No-Gi
1,136
Rating based on No-Gi matches in the past 12 months.
Current form
2–5
Results from the ten most recent rating-eligible matches.
Opponents
3
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
0
Silver
2
Bronze
0
Total medals
2
Events with results
4

Full career record

Wins
3
Losses
11
Matches
14
Win rate
21.4%

Ways of winning

Submission
1
Points
2
Decision
0
Disqualification
0

Personal records

Longest winning streak
1
Longest submission streak
1

Recent recorded placements

  1. Lion Cub Jiu Jitsu Competition 6

    NL Event record 1–3

    • Girls NO-GI / 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
    • Girls GI / 6 & 7 years old (DAY 2: Sunday) / Grey belt / -27 kg

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
3
Distinct events
2

Ways of winning

  • Submission 1 50%
  • Points 1 50%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1232
Record
2–3
Win rate
40%
Submission share
50%

No-Gi

Rating
1136
Record
0–2
Win rate
0%
Submission share
-

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
1,275
Change over 90 days
+103
Highest rating in 12 months
1,275
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,384
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
57%
Effective evidence
4.2
Confidence
59/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 1–6 1–6 across 7 rematches against 2 repeat opponents.
Most-faced opponent Chelsey Co 0–5 · 5 matches

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1100 Macey De Vos · Lion Cub Jiu Jitsu Competition 5 Pts 2–0

Full career

  1. #1100 Macey De Vos · Lion Cub Jiu Jitsu Competition 5 Pts 2–0

Rivals

Opponent Head-to-head record Matches
Chelsey Co 0–5 5
Georgia Plinck 1–1 2

Around this athlete

Athlete Rank Rating
Amaya Ziamari #1010 1,275
Mia Casapu #1011 1,274

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 1,275

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
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.

July 2026 No new matches Change 0 Rating 1,275

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
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.

June 2026 No new matches Change 0 Rating 1,275

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
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.

May 2026 4 new matches Change +101 Rating 1,275

Rating-period composition

Rating matches
7 +4
Record
2–5 Previous month 1–2
Opponents
3 0
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
May 9, 2026 Chelsey Co
Lion Cub Jiu Jitsu Competition 6 Girls NO-GI / 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
Method Submission 00:10 0–0
Marginal influence -9
Loss
May 9, 2026 Chelsey Co
Lion Cub Jiu Jitsu Competition 6 Girls NO-GI / 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
Method Submission 01:57 0–11
Marginal influence -9
Loss
May 9, 2026 Chelsey Co
Lion Cub Jiu Jitsu Competition 6 Girls GI / 6 & 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
Method Submission 02:12 0–19
Marginal influence -7
Win
May 9, 2026 Georgia Plinck
Lion Cub Jiu Jitsu Competition 6 Girls GI / 6 & 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
Method Submission 02:48 11–2
Marginal influence +21
April 2026 No new matches · 4 left period Change +1 Rating 1,174

Rating-period composition

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

4 older matches left the 12-month period: 1 won and 3 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

March 2026 No new matches Change -7 Rating 1,173

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
Opponents
7 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 1,180

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
Opponents
7 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 +1 Rating 1,180

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
Opponents
7 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 1,179

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
Opponents
7 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 +7 Rating 1,179

Rating-period composition

Rating matches
7 0
Record
2–5 Previous month 2–5
Opponents
7 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 3 new matches · 2 left period Change +42 Rating 1,172

Rating-period composition

Rating matches
7 +1
Record
2–5 Previous month 1–5
Opponents
7 +1
Events
2 0

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.

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
October 25, 2025 Georgia Plinck
Lion Cub Jiu Jitsu Competition 5 Girls GI / 6 & 7 years old (DAY 2: Sunday) / White & Grey belt / -24 & -27 kg
Method Points 03:00 4–16
Marginal influence -23
Win
October 25, 2025 Macey De Vos
Lion Cub Jiu Jitsu Competition 5 Girls GI / 6 & 7 years old (DAY 2: Sunday) / White & Grey belt / -24 & -27 kg
Method Points 03:00 2–0
Marginal influence +30
Loss
October 25, 2025 Chelsey Co
Lion Cub Jiu Jitsu Competition 5 Girls GI / 6 & 7 years old (DAY 2: Sunday) / White & Grey belt / -24 & -27 kg
Method Submission 01:10 2–4
Marginal influence -6
September 2025 No new matches Change 0 Rating 1,130

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
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
4.2
Official ranking percentile
Top 68%
Performance
-

4.2 weighted matches against 3 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,384
Repeated-opponent share
57.1%
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

Lion Cub Jiu Jitsu Competition 6
U8 · Counts
Girls NO-GI / 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
  • Competition age 7
  • Registered age: u8
  • Source category: u8
Girls GI / 6 & 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
  • Competition age 7
  • Registered age: u8
  • Source category: u8
Lion Cub Jiu Jitsu Competition 5
Does not count
Girls GI / 6 & 7 years old (DAY 2: Sunday) / White & Grey belt / -24 & -27 kg
  • Competition age 6
  • Registered age: u8
  • Source category: u8

Classification evidence

Why ≤ 27 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

  • ≤ 27 kg 2 competition events Selected outcome

Registrations and outcomes

Lion Cub Jiu Jitsu Competition 6
≤ 27 kg · Counts as a competition event
Girls NO-GI / 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

2 matches in the rating period

Lion Cub Jiu Jitsu Competition 6
≤ 27 kg · Counts as a competition event
Girls GI / 6 & 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

2 matches in the rating period

Lion Cub Jiu Jitsu Competition 5
≤ 27 kg · Counts as a competition event
Girls GI / 6 & 7 years old (DAY 2: Sunday) / White & Grey belt / -24 & -27 kg
  • Registered weight class: -27 kg
  • Source competition limit: -27 kg

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 4 matches in the rating period Selected outcome
  • white 3 matches in the rating period

Registrations and outcomes

Lion Cub Jiu Jitsu Competition 6
grey · Counts as a match
Girls NO-GI / 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
  • Source belt category: grey

2 matches in the rating period

Lion Cub Jiu Jitsu Competition 6
grey · Counts as a match
Girls GI / 6 & 7 years old (DAY 2: Sunday) / Grey belt / -27 kg
  • Source belt category: grey

2 matches in the rating period

Lion Cub Jiu Jitsu Competition 5
white · Counts as a match
Girls GI / 6 & 7 years old (DAY 2: Sunday) / White & Grey belt / -24 & -27 kg
  • Source belt category: white

3 matches in the rating period