TopBJJ Index Youth
Language selector
Menu
RO

Iustin Duina

Yaware

W–L
11–15
Won and lost rating-eligible matches in the past 12 months.
Gi
1,337
Rating based on Gi matches in the past 12 months.
No-Gi
1,192
Rating based on No-Gi matches in the past 12 months.
Current form
2–8
Results from the ten most recent rating-eligible matches.
Opponents
16
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
9
Silver
8
Bronze
3
Total medals
20
Events with results
19

Full career record

Wins
22
Losses
24
Matches
46
Win rate
47.8%

Ways of winning

Submission
11
Points
9
Decision
1
Disqualification
0

Personal records

Longest winning streak
6
Longest submission streak
4
Longest gold streak
2
Largest recorded points win
21–0

Recent recorded placements

  1. 2026 AGF Antwerp Championships

    BE Event record 1–8

    • Place 4
    • Place 4
    • Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
    • No Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
  2. 2026 AGF Belgium Championships

    BE Event record 2–1

    • Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
    • Gi Kids / Boys / Juniors (12 - 13 yrs) / Yellow / Middle I (Up to 56.70 kg)

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
16
Distinct events
9

Ways of winning

  • Submission 9 82%
  • Points 2 18%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1337
Record
10–11
Win rate
48%
Submission share
90%

No-Gi

Rating
1192
Record
1–4
Win rate
20%
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
1,355
Change over 90 days
+87
Highest rating in 12 months
1,355
Performance versus expectation
+0.6 pp
Schedule strength
Top 30%
Average opponent rating
1,354
Weighted win rate
42%
Expected win rate
41%
Repeat-opponent share
38%
Effective evidence
16.5
Confidence
94/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 10–14 10–14 across 24 rematches against 10 repeat opponents.

Top 10 highest-ranked defeated opponents

Rivals

Opponent Head-to-head record Matches
Eymen Ali 2–1 3

Around this athlete

Athlete Rank Rating
Meghan FRAISSE #614 1,355
Iustin Duina #615 1,355
Tim Hatem #616 1,355

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 1,355

Rating-period composition

Rating matches
26 0
Record
11–15 Previous month 11–15
Opponents
16 0
Events
9 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 1,355

Rating-period composition

Rating matches
26 0
Record
11–15 Previous month 11–15
Opponents
16 0
Events
9 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

June 2026 9 new matches · 1 left period Change +12 Rating 1,355

Rating-period composition

Rating matches
26 +8
Record
11–15 Previous month 10–8
Opponents
16 +3
Events
9 0

1 older matches left the 12-month period: 0 won and 1 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
June 13, 2026 Aymen Khammal
2026 AGF Antwerp Championships No Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
Method Submission 00:30 1–0
Marginal influence -6
Loss
June 13, 2026 Nikita Skalevskyi
2026 AGF Antwerp Championships No Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
Method Submission 00:22 0–5
Marginal influence -2
Win
June 13, 2026 Jesse Van Den Berg
2026 AGF Antwerp Championships No Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
Method Points 03:00 6–1
Marginal influence +5
Loss
June 13, 2026 Nikita Skalevskyi
2026 AGF Antwerp Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
Method Submission 00:56 1–6
Marginal influence -2
Loss
June 13, 2026 Nikita Skalevskyi
2026 AGF Antwerp Championships No Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
Method Submission 00:49 0–2
Marginal influence -2
Loss
June 13, 2026 Léo Hostiez
2026 AGF Antwerp Championships Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
Method Submission 00:41 0–2
Marginal influence -4
Loss
June 13, 2026 Aymen Khammal
2026 AGF Antwerp Championships Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
Method Submission 01:03 1–7
Marginal influence -5
Loss
June 13, 2026 Nikita Skalevskyi
2026 AGF Antwerp Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
Method Submission 00:38 0–5
Marginal influence -3
Loss
June 13, 2026 Nikita Skalevskyi
2026 AGF Antwerp Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
Method Submission 00:44 1–2
Marginal influence -3
May 2026 8 new matches Change +81 Rating 1,343

Rating-period composition

Rating matches
18 +8
Record
10–8 Previous month 4–6
Opponents
13 +5
Events
9 +3

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
May 24, 2026 Lakhdar Targui
PHOENIX BJJ CUP IX Boys Gi / U13 - 2013-2014 / Yellow / -56,70 kg
Method Submission 01:29 12–0
Marginal influence +9
Win
May 24, 2026 Lakhdar Targui
PHOENIX BJJ CUP IX Boys Gi / U13 - 2013-2014 / Yellow / -56,70 kg
Method Submission 02:46 20–2
Marginal influence +9
Win
May 10, 2026 Platon Kolpak
2026 AGF Belgium Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Yellow / Middle I (Up to 56.70 kg)
Method Submission 00:22 4–0
Marginal influence +7
Win
May 10, 2026 Platon Kolpak
2026 AGF Belgium Championships Gi Kids / Boys / Juniors (12 - 13 yrs) / Yellow / Middle I (Up to 56.70 kg)
Method Submission 01:03 4–0
Marginal influence +7
Loss
May 10, 2026 Luuk Van Der Put
2026 AGF Belgium Championships Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
Method Points 03:00 2–3
Marginal influence -18
Loss
May 9, 2026 Harun Ibrahim
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 )
Method Submission 02:50 0–4
Marginal influence -12
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 )
Method Points 04:00 15–4
Marginal influence +9
Win
May 9, 2026 Yamine GUERFI
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 )
Method Submission 00:16 0–0
Marginal influence +20
April 2026 2 new matches Change -6 Rating 1,262

Rating-period composition

Rating matches
10 +2
Record
4–6 Previous month 4–4
Opponents
8 +1
Events
6 +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
April 26, 2026 Jules Huys
NAGA Brussels Grappling Championship Children Gi (Male) / Intermediate / 55 - 59.9 / 12-13 years
Method Points 03:00 3–15
Marginal influence -4
Loss
April 26, 2026 Jules Huys
NAGA Brussels Grappling Championship Children Gi (Male) / Intermediate / 55 - 59.9 / 12-13 years
Method Submission 01:54 2–11
Marginal influence -4
March 2026 2 new matches Change +99 Rating 1,268

Rating-period composition

Rating matches
8 +2
Record
4–4 Previous month 2–4
Opponents
7 +2
Events
5 +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 14, 2026 Benderadji Ibrahim
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 : 10-11)
Method Submission 00:44 5–0
Marginal influence +14
Win
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025 BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 : 10-11)
Method Submission 00:54 6–0
Marginal influence +9
February 2026 2 new matches · 1 left period Change -102 Rating 1,169

Rating-period composition

Rating matches
6 +1
Record
2–4 Previous month 3–2
Opponents
5 +1
Events
4 0

1 older matches left the 12-month period: 1 won and 0 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
February 14, 2026 Mohamed El Mokhtari
INTERCLUB JIU JITSU 14/02/2026 Boys Gi / Yellow / 10-11-12 yrs / +60 kg
Method Points 03:00 0–20
Marginal influence -16
Loss
February 14, 2026 Pedro Henrique
INTERCLUB JIU JITSU 14/02/2026 Boys Gi / Yellow / 10-11-12 yrs / +60 kg
Method Points 03:00 0–19
Marginal influence -13
January 2026 2 new matches · 3 left period Change +102 Rating 1,271

Rating-period composition

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

3 older matches left the 12-month period: 0 won and 3 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
January 24, 2026 Seraje Benhammouche
2026 AGF Brugge Championships Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Yellow / Middle I (Up to 56.70 kg)
Method Submission 01:08 11–0
Marginal influence +8
Win
January 24, 2026 Seraje Benhammouche
2026 AGF Brugge Championships Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Yellow / Middle I (Up to 56.70 kg)
Method Submission 02:54 9–0
Marginal influence +8
December 2025 No new matches Change -2 Rating 1,169

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 0
Events
4 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 +6 Rating 1,171

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
5 0
Events
4 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

October 2025 1 new match Change -25 Rating 1,165

Rating-period composition

Rating matches
6 +1
Record
1–5 Previous month 1–4
Opponents
5 +1
Events
4 +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
October 18, 2025 Adkhi Mohamed Hassan
INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10 Boys Gi / Yellow / 10-11-12 yrs / -52 kg
Method Points 03:00 0–16
Marginal influence -14
September 2025 No new matches Change +1 Rating 1,190

Rating-period composition

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

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

Relevant matches
16.5
Official ranking percentile
Top 42%
Performance
0.6 pp above expectation

16.5 weighted matches against 16 different opponents across 9 events

Weighted win rate
41.7%
Expected win rate
41.1%
Average opponent rating
1,354
Repeated-opponent share
38.5%
Network connectivity
87.6%

Classification evidence

Why U14?

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

  • U14 8 event votes Selected outcome

Registrations and outcomes

2026 AGF Antwerp Championships
U14 · Counts
No Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u18
  • Source category: u18
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u18
  • Source category: u18
Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
PHOENIX BJJ CUP IX
U14 · Counts
Boys Gi / U13 - 2013-2014 / Yellow / -56,70 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14
2026 AGF Belgium Championships
U14 · Counts
Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u16
  • Source category: u16
Competition T-shirt / Youth Medium
Gi Kids / Boys / Juniors (12 - 13 yrs) / Yellow / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026
U14 · Counts
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 )
  • Competition age 12
NAGA Brussels Grappling Championship
U14 · Counts
Children Gi (Male) / Intermediate / 55 - 59.9 / 12-13 years
  • Competition age 12
  • Registered age: u14
  • Source category: u14
OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
U14 · Counts
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 : 10-11)
  • Competition age 12
INTERCLUB JIU JITSU 14/02/2026
U14 · Counts
Boys Gi / Yellow / 10-11-12 yrs / +60 kg
  • Competition age 12
2026 AGF Brugge Championships
U14 · Counts
Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Yellow / Middle I (Up to 56.70 kg)
  • Competition age 12
  • Registered age: u12
  • Source category: u12
INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10
Does not count
Boys Gi / Yellow / 10-11-12 yrs / -52 kg
  • Competition age 11

Classification evidence

Why ≤ 57 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

  • ≤ 57 kg 3 competition events Selected outcome

Registrations and outcomes

2026 AGF Antwerp Championships
≤ 57 kg · Counts as a competition event
No Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

3 matches in the rating period

2026 AGF Antwerp Championships
≤ 57 kg · Counts as a competition event
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

2 matches in the rating period

2026 AGF Antwerp Championships
≤ 57 kg · Counts as a competition event
Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

2 matches in the rating period

2026 AGF Antwerp Championships
≤ 57 kg · Counts as a competition event
Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

2 matches in the rating period

PHOENIX BJJ CUP IX
≤ 57 kg · Counts as a competition event
Boys Gi / U13 - 2013-2014 / Yellow / -56,70 kg
  • Registered weight class: -56,70 kg
  • Source competition limit: -56,70 kg

2 matches in the rating period

2026 AGF Belgium Championships
≤ 57 kg · Counts as a competition event
Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

1 match in the rating period

2026 AGF Belgium Championships
Does not count
Competition T-shirt / Youth Medium

No matches in the rating period · no valid weight evidence

2026 AGF Belgium Championships
≤ 57 kg · Counts as a competition event
Gi Kids / Boys / Juniors (12 - 13 yrs) / Yellow / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

2 matches in the rating period

OPEN BRUSSELS 3 FBJJB RANKING KID GI & NoGi 09.05.2026
≤ 55 kg · Does not count
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 )
  • Registered weight class: -55kg (cat 1 : 10-12)
  • Source competition limit: -55kg (cat 1 : 10-12)

3 matches in the rating period · outside the three most recent unambiguous events

NAGA Brussels Grappling Championship
≤ 60 kg · Does not count
Children Gi (Male) / Intermediate / 55 - 59.9 / 12-13 years
  • Registered weight class: 55 - 59.9
  • Source competition limit: 55 - 59.9

2 matches in the rating period · outside the three most recent unambiguous events

OPEN BRUSSELS 2 FBJJB RANKING KID GI & NoGi 14.03.2025
≤ 55 kg · Does not count
BOY GI DIVISION (-16years old) / KID GI / KID (-16years old) / -55kg (cat 1 : 10-11)
  • Registered weight class: -55kg (cat 1 : 11-12-13-14)
  • Source competition limit: -55kg (cat 1 : 11-12-13-14)

2 matches in the rating period · outside the three most recent unambiguous events

INTERCLUB JIU JITSU 14/02/2026
Does not count
Boys Gi / Yellow / 10-11-12 yrs / +60 kg
  • Registered weight class: +60 kg
  • Source competition limit: +60 kg

2 matches in the rating period · weight class could not be normalized reliably

2026 AGF Brugge Championships
Does not count
Gi Kids Challenger / Boys / Regular Challenger / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

No matches in the rating period · no valid weight evidence

2026 AGF Brugge Championships
≤ 57 kg · Does not count
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Yellow / Middle I (Up to 56.70 kg)
  • Registered weight class: Middle I (Up to 56.70 kg)
  • Source competition limit: Middle I (Up to 56.70 kg)

2 matches in the rating period · outside the three most recent unambiguous events

INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10
≤ 52 kg · Does not count
Boys Gi / Yellow / 10-11-12 yrs / -52 kg
  • Registered weight class: -52 kg
  • Source competition limit: -52 kg

1 match in the rating period · outside the three most recent unambiguous events

Classification evidence

Why Yellow?

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

  • yellow 9 matches in the rating period Selected outcome
  • orange 4 matches in the rating period

Registrations and outcomes

2026 AGF Antwerp Championships
orange · Counts as a match
No Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
  • Source belt category: orange

2 matches in the rating period

2026 AGF Antwerp Championships
orange · Counts as a match
Gi Kids / Boys / Juniors (12 - 13 yrs) / Orange / Middle I (Up to 56.70 kg)
  • Source belt category: orange

2 matches in the rating period

PHOENIX BJJ CUP IX
yellow · Counts as a match
Boys Gi / U13 - 2013-2014 / Yellow / -56,70 kg
  • Source belt category: yellow

2 matches in the rating period

2026 AGF Belgium Championships
yellow · Counts as a match
Gi Kids / Boys / Juniors (12 - 13 yrs) / Yellow / Middle I (Up to 56.70 kg)
  • Source belt category: yellow

2 matches in the rating period

INTERCLUB JIU JITSU 14/02/2026
yellow · Counts as a match
Boys Gi / Yellow / 10-11-12 yrs / +60 kg
  • Source belt category: yellow

2 matches in the rating period

2026 AGF Brugge Championships
yellow · Counts as a match
Gi Kids / Boys / Pre Teen (10 - 11 yrs) / Yellow / Middle I (Up to 56.70 kg)
  • Source belt category: yellow

2 matches in the rating period

INTERCLUB GRAPPLING VLAANDEREN Jiu Jitsu - Gi - 18/10
yellow · Counts as a match
Boys Gi / Yellow / 10-11-12 yrs / -52 kg
  • Source belt category: yellow

1 match in the rating period