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William Willay

Arduennae Jiu-jitsu

W–L
12–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,315
Rating based on Gi matches in the past 12 months.
No-Gi
1,448
Rating based on No-Gi matches in the past 12 months.
Current form
6–4
Results from the ten most recent rating-eligible matches.
Opponents
12
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
1
Silver
2
Bronze
0
Total medals
3
Events with results
2

Full career record

Wins
12
Losses
5
Matches
17
Win rate
70.6%

Ways of winning

Submission
10
Points
0
Decision
0
Disqualification
2

Personal records

Longest winning streak
4
Longest submission streak
2

Recent recorded placements

  2. Grappling Industries BRUSSELS

    BE Event record 6–3

    • Gi Kids / White / 14 - 15 years (Male) / -155 lbs
    • No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs

12-month performance profile

How the results were achieved

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

Ways of winning

  • Submission 10 83%
  • Points 0 0%
  • Decision 0 0%
  • Other recorded result 2 17%

Gi versus No-Gi

Gi

Rating
1315
Record
4–3
Win rate
57%
Submission share
75%

No-Gi

Rating
1448
Record
8–2
Win rate
80%
Submission share
88%

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
1,458
Change over 90 days
+81
Highest rating in 12 months
1,445
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,351
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
29%
Effective evidence
11.4
Confidence
89/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 6–3 6–3 across 9 rematches against 4 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1150 Unknown User · Grappling Industries BRUSSELS Sub 01:55 2–0 Earlier · Sub 00:34 0–0 November 29, 2025 · Grappling Industries BRUSSELS

Full career

  1. #1150 Unknown User · Grappling Industries BRUSSELS Sub 01:55 2–0 Earlier · Sub 00:34 0–0 November 29, 2025 · Grappling Industries BRUSSELS

Rivals

Opponent Head-to-head record Matches
Denys Anatskyi 2–0 2

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 +4 Rating 1,458

Rating-period composition

Rating matches
17 0
Record
12–5 Previous month 12–5
Opponents
12 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 +3 Rating 1,454

Rating-period composition

Rating matches
17 0
Record
12–5 Previous month 12–5
Opponents
12 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 1,451

Rating-period composition

Rating matches
17 0
Record
12–5 Previous month 12–5
Opponents
12 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 1,451

Rating-period composition

Rating matches
17 0
Record
12–5 Previous month 12–5
Opponents
12 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 +2 Rating 1,447

Rating-period composition

Rating matches
17 0
Record
12–5 Previous month 12–5
Opponents
12 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 8 new matches Change +74 Rating 1,445

Rating-period composition

Rating matches
17 +8
Record
12–5 Previous month 6–3
Opponents
12 +7
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.
Win
March 21, 2026 Raphael Chenoufi
Grappling Industries BRUSSELS No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
Method Disqualification 00:47 2–0
Marginal influence +21
Win
March 21, 2026 Ervin Arslan
Grappling Industries BRUSSELS No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
Method Submission 01:59 7–2
Marginal influence +14
Win
March 21, 2026 Ayoube Moussaoui
Grappling Industries BRUSSELS No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
Method Submission 00:21 0–0
Marginal influence +8
Win
March 21, 2026 Orik Beka
Grappling Industries BRUSSELS No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
Method Submission 00:59 9–0
Marginal influence +9
Win
March 21, 2026 Panos Sarris
Grappling Industries BRUSSELS No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
Method Submission 0–0
Marginal influence +12
Loss
March 21, 2026 Yagmur Huseyin
Grappling Industries BRUSSELS Gi Kids / 16 - 17 years (Male) / White / -155 lbs
Method Submission 00:49 0–0
Marginal influence -16
Loss
March 21, 2026 Ayoub El Boudakhani
Grappling Industries BRUSSELS Gi Kids / 16 - 17 years (Male) / White / -155 lbs
Method Points 04:00 3–5
Marginal influence -13
Win
March 21, 2026 Ayoube Moussaoui
Grappling Industries BRUSSELS Gi Kids / 16 - 17 years (Male) / White / -155 lbs
Method Submission 01:19 4–0
Marginal influence +4
February 2026 No new matches Change 0 Rating 1,371

Rating-period composition

Rating matches
9 0
Record
6–3 Previous month 6–3
Opponents
5 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 +7 Rating 1,371

Rating-period composition

Rating matches
9 0
Record
6–3 Previous month 6–3
Opponents
5 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 No new matches Change 0 Rating 1,364

Rating-period composition

Rating matches
9 0
Record
6–3 Previous month 6–3
Opponents
5 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.

November 2025 9 new matches Change Starting point Rating 1,364

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
November 29, 2025 Nykyta Tymofeiev
Grappling Industries BRUSSELS No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
Method Submission 01:54 5–0
Marginal influence -7
Loss
November 29, 2025 Nykyta Tymofeiev
Grappling Industries BRUSSELS No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
Method Submission 01:24 2–0
Marginal influence -7
Win
November 29, 2025 Nassim Khadiji
Grappling Industries BRUSSELS No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
Method Submission 03:09 6–0
Marginal influence +12
Win
November 29, 2025 Unknown User
Grappling Industries BRUSSELS No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
Method Submission 01:55 2–0
Marginal influence +8
Win
November 29, 2025 Denys Anatskyi
Grappling Industries BRUSSELS No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
Method Submission 01:28 6–0
Marginal influence +9
Win
November 29, 2025 Unknown User
Grappling Industries BRUSSELS Gi Kids / White / 14 - 15 years (Male) / -155 lbs
Method Submission 00:34 0–0
Marginal influence +3
Loss
November 29, 2025 Nykyta Tymofeiev
Grappling Industries BRUSSELS Gi Kids / White / 14 - 15 years (Male) / -155 lbs
Method Submission 03:40 0–2
Marginal influence -11
Win
November 29, 2025 Ilyas Azaroui
Grappling Industries BRUSSELS Gi Kids / White / 14 - 15 years (Male) / -155 lbs
Method Disqualification 03:07 0–2
Marginal influence +7
Win
November 29, 2025 Denys Anatskyi
Grappling Industries BRUSSELS Gi Kids / White / 14 - 15 years (Male) / -155 lbs
Method Submission 00:43 6–0
Marginal influence +4
Relevant matches
11.4
Official ranking percentile
-
Performance
-

11.4 weighted matches against 12 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,351
Repeated-opponent share
29.4%
Network connectivity
87.6%

Classification evidence

Why U18?

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

  • U18 1 event vote Selected outcome

Registrations and outcomes

Grappling Industries PARIS
Does not count
No Gi Adult / Male / Intermediate (Blue) / Adult / -155 lbs
  • Competition age 16
Gi Adult / Male / Blue / Adult / -155 lbs
  • Competition age 16
Grappling Industries BRUSSELS
U18 · Counts
No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
  • Competition age 16
  • Registered age: u18
  • Source category: u18
Gi Kids / 16 - 17 years (Male) / White / -155 lbs
  • Competition age 16
  • Registered age: u18
  • Source category: u18
Grappling Industries BRUSSELS
Does not count
No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Gi Kids / White / 14 - 15 years (Male) / -155 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16

Classification evidence

Why ≤ 70 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

  • ≤ 70 kg 2 competition events Selected outcome

Registrations and outcomes

Grappling Industries PARIS
Does not count
No Gi Adult / Male / Intermediate (Blue) / Adult / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries PARIS
Does not count
Gi Adult / Male / Blue / Adult / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries BRUSSELS
≤ 70 kg · Counts as a competition event
No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

5 matches in the rating period

Grappling Industries BRUSSELS
≤ 70 kg · Counts as a competition event
Gi Kids / 16 - 17 years (Male) / White / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

3 matches in the rating period

Grappling Industries BRUSSELS
≤ 70 kg · Counts as a competition event
No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

5 matches in the rating period

Grappling Industries BRUSSELS
≤ 70 kg · Counts as a competition event
Gi Kids / White / 14 - 15 years (Male) / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

4 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 17 matches in the rating period Selected outcome

Registrations and outcomes

Grappling Industries BRUSSELS
white · Counts as a match
No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
  • Source belt category: white

5 matches in the rating period

Grappling Industries BRUSSELS
white · Counts as a match
Gi Kids / 16 - 17 years (Male) / White / -155 lbs
  • Source belt category: white

3 matches in the rating period

Grappling Industries BRUSSELS
white · Counts as a match
No Gi Kids / Beginner (White) / 14 - 15 years (Male) / -155 lbs
  • Source belt category: white

5 matches in the rating period

Grappling Industries BRUSSELS
white · Counts as a match
Gi Kids / White / 14 - 15 years (Male) / -155 lbs
  • Source belt category: white

4 matches in the rating period