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Leon Demanet

Icon jiu-jitsu Grizzo Team

W–L
3–4
Won and lost rating-eligible matches in the past 12 months.
Gi
1,238
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
3–4
Results from the ten most recent rating-eligible matches.
Opponents
7
Unique opponents faced in rating-eligible matches in the past 12 months.

Indexed career

Matches

7
Indexed competition matches
Date Opponent Result Event Division
2026-03-14 Samuel Gonzalez Arbyn
Loss
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 Gi · BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
2026-03-14 Santiago Mesa Galvao
Win
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 Gi · BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
2026-03-14 Yanis Temsamani Ben Ziad
Loss
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 Gi · BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
2026-03-14 Frederico Camelo
Win
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 Gi · BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
2025-11-22 Akin Seyf
Loss
BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS Gi · Boys Gi / White-Grey / 6-7 yrs / -24 kg
2025-11-22 William DESORBAIS
Win
BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS Gi · Boys Gi / White-Grey / 6-7 yrs / -24 kg
2025-11-22 Balian Khedhiri
Loss
BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS Gi · Boys Gi / White-Grey / 6-7 yrs / -24 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 0 Rating 1,238

Rating-period composition

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

July 2026 No new matches Change 0 Rating 1,238

Rating-period composition

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

June 2026 No new matches Change 0 Rating 1,238

Rating-period composition

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

May 2026 No new matches Change +2 Rating 1,238

Rating-period composition

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

April 2026 No new matches Change 0 Rating 1,236

Rating-period composition

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

March 2026 4 new matches Change +54 Rating 1,236

Rating-period composition

Rating matches
7 +4
Record
3–4 Previous month 1–2
Opponents
7 +4
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
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
Method Points 02:00 0–9
Marginal influence -24
Win
March 14, 2026 Santiago Mesa Galvao
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
Method Points 02:00 11–0
Marginal influence +24
Loss
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
Method Submission 00:19 0–0
Marginal influence -26
Win
March 14, 2026 Frederico Camelo
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
Method Points 02:00 22–0
Marginal influence +25
February 2026 No new matches Change 0 Rating 1,182

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
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.

January 2026 No new matches Change -1 Rating 1,182

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
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.

December 2025 No new matches Change 0 Rating 1,183

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
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.

November 2025 3 new matches Change Starting point Rating 1,183

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 22, 2025 Akin Seyf
BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS Boys Gi / White-Grey / 6-7 yrs / -24 kg
Method Points 02:00 0–2
Marginal influence -28
Win
November 22, 2025 William DESORBAIS
BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS Boys Gi / White-Grey / 6-7 yrs / -24 kg
Method Points 02:00 4–0
Marginal influence +26
Loss
November 22, 2025 Balian Khedhiri
BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS Boys Gi / White-Grey / 6-7 yrs / -24 kg
Method Points 02:00 0–6
Marginal influence -10
Relevant matches
5.1
Official ranking percentile
Top 79%
Performance
-

5.1 weighted matches against 7 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,250
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

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
U8 · Counts
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
  • Competition age 7
  • Registered age: u8
  • Source category: u8
BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS
Does not count
Boys Gi / White-Grey / 6-7 yrs / -24 kg
  • Competition age 6
  • 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
  • ≤ 25 kg 1 competition event

Registrations and outcomes

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
≤ 25 kg · Counts as a competition event
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -25 KG (cat 1 : 5-6-7)
  • Registered weight class: -25 KG (cat 1 : 5-6-7)
  • Source competition limit: -25 KG (cat 1 : 5-6-7)

4 matches in the rating period

BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS
≤ 24 kg · Counts as a competition event
Boys Gi / White-Grey / 6-7 yrs / -24 kg
  • Registered weight class: -24 kg
  • Source competition limit: -24 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 3 matches in the rating period Selected outcome

Registrations and outcomes

BELGIAN CHAMPIONSHIP GI KIDS YOUTH & ADULTS / CHAMPIONNAT DE BELGIQUE GI KIDS YOUTH & ADULTS
grey · Counts as a match
Boys Gi / White-Grey / 6-7 yrs / -24 kg
  • Source belt category: grey

3 matches in the rating period