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CH

Lenny Duc

ATLAS JJB

≤ 51 kg
W–L
9–1
Won and lost rating-eligible matches in the past 12 months.
Gi
1,436
Rating based on Gi matches in the past 12 months.
No-Gi
1,276
Rating based on No-Gi matches in the past 12 months.
Current form
9–1
Results from the ten most recent rating-eligible matches.
Opponents
7
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
6
Silver
1
Bronze
0
Total medals
7
Events with results
5

Full career record

Wins
10
Losses
1
Matches
11
Win rate
90.9%

Ways of winning

Submission
10
Points
0
Decision
0
Disqualification
0

Personal records

Longest winning streak
7
Longest submission streak
7
Longest gold streak
3

Recent recorded placements

  3. Grappling Industries GENEVA

    CH Event record 4–0

    • Gi Kids / 14 - 15 years (Male) / White / -115 lbs
    • No Gi Kids / 14 - 15 years (Male) / Beginner (White) / -115 lbs

  5. Geneva Submission Series #3

    CH Event record 2–0

    • Geneva Submission Series #3 White & Blue Belts / -45 kg / White Belt / Male / 13-17 years

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
7
Unique opponents
7
Distinct events
4

Ways of winning

  • Submission 10 100%
  • Points 0 0%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1436
Record
6–0
Win rate
100%
Submission share
100%

No-Gi

Rating
1276
Record
3–1
Win rate
75%
Submission share
100%

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
1,439
Change over 90 days
+70
Highest rating in 12 months
1,433
Performance versus expectation
+28.8 pp
Schedule strength
Top 92%
Average opponent rating
1,246
Weighted win rate
88%
Expected win rate
59%
Repeat-opponent share
30%
Effective evidence
8.2
Confidence
86/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 5–1 5–1 across 6 rematches against 3 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #1028 Lyam Soler · Geneva Submission Series #3 Sub 0–0 Earlier · Sub 01:23 0–0 March 1, 2026 · Geneva Submission Series #3
  2. #1105 David Cortés Díaz · GIRONA BJJ CUP GI & NO-GI 2026 Sub 00:37 0–0

Full career

  1. #1028 Lyam Soler · Geneva Submission Series #3 Sub 0–0 Earlier · Sub 01:23 0–0 March 1, 2026 · Geneva Submission Series #3
  2. #1105 David Cortés Díaz · GIRONA BJJ CUP GI & NO-GI 2026 Sub 00:37 0–0

Rivals

Opponent Head-to-head record Matches
Lyam Soler 2–0 2
Milo Buet 2–0 2

Around this athlete

Athlete Rank Rating
Lenny Valenzano #529 1,439
Lenny Duc #530 1,439
Theo Lentfer #531 1,439

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 +5 Rating 1,439

Rating-period composition

Rating matches
10 0
Record
9–1 Previous month 9–1
Opponents
7 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.

July 2026 No new matches Change +1 Rating 1,434

Rating-period composition

Rating matches
10 0
Record
9–1 Previous month 9–1
Opponents
7 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.

June 2026 1 new match Change +10 Rating 1,433

Rating-period composition

Rating matches
10 +1
Record
9–1 Previous month 8–1
Opponents
7 +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.
Win
ADCC Suisse Open Championship 2026 BOYS / 13-14 years / -55 kg
Method Submission 03:49 0–0
Marginal influence +1
May 2026 4 new matches Change +67 Rating 1,423

Rating-period composition

Rating matches
9 +4
Record
8–1 Previous month 4–1
Opponents
6 +3
Events
3 +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
Grappling Industries GENEVA No Gi Kids / 14 - 15 years (Male) / Beginner (White) / -115 lbs
Method Submission 01:00 4–0
Marginal influence +5
Win
May 23, 2026 Milo Buet
Grappling Industries GENEVA No Gi Kids / 14 - 15 years (Male) / Beginner (White) / -115 lbs
Method Submission 00:29 2–0
Marginal influence -2
Win
May 23, 2026 Salim Koch
Grappling Industries GENEVA Gi Kids / 14 - 15 years (Male) / White / -115 lbs
Method Submission 00:15 0–0
Marginal influence +19
Win
May 23, 2026 Milo Buet
Grappling Industries GENEVA Gi Kids / 14 - 15 years (Male) / White / -115 lbs
Method Submission 00:29 0–0
Marginal influence +13
April 2026 No new matches Change -7 Rating 1,356

Rating-period composition

Rating matches
5 0
Record
4–1 Previous month 4–1
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.

March 2026 5 new matches Change Starting point Rating 1,363

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
March 8, 2026 David Cortés Díaz
GIRONA BJJ CUP GI & NO-GI 2026 Kids Boys NO-GI / White / Infanto Juvenil B / -51,0 kg
Method Disqualification 00:24 0–0
Marginal influence -40
Win
March 8, 2026 David Cortés Díaz
GIRONA BJJ CUP GI & NO-GI 2026 Kids Boys GI / White / Infanto Juvenil B / -51,0 kg
Method Submission 00:37 0–0
Marginal influence +21
Win
March 8, 2026 Joao Miguel Pires
GIRONA BJJ CUP GI & NO-GI 2026 Kids Boys GI / White / Infanto Juvenil B / -51,0 kg
Method Submission 03:16 0–0
Marginal influence +16
Win
March 1, 2026 Lyam Soler
Geneva Submission Series #3 Geneva Submission Series #3 White & Blue Belts / -45 kg / White Belt / Male / 13-17 years
Method Submission 0–0
Marginal influence +16
Win
March 1, 2026 Lyam Soler
Geneva Submission Series #3 Geneva Submission Series #3 White & Blue Belts / -45 kg / White Belt / Male / 13-17 years
Method Submission 01:23 0–0
Marginal influence +16
Relevant matches
8.2
Official ranking percentile
Top 18%
Performance
28.8 pp above expectation

8.2 weighted matches against 7 different opponents across 4 events

Weighted win rate
87.9%
Expected win rate
59.0%
Average opponent rating
1,246
Repeated-opponent share
30.0%
Network connectivity
80.9%

Classification evidence

Why U16?

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

  • U16 4 event votes Selected outcome

Registrations and outcomes

ADCC Suisse Open Championship 2026
U16 · Counts
BOYS / 13-14 years / -55 kg
  • Competition age 15
Grappling Industries GENEVA
U16 · Counts
No Gi Kids / 14 - 15 years (Male) / Beginner (White) / -115 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Gi Kids / 14 - 15 years (Male) / White / -115 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16
GIRONA BJJ CUP GI & NO-GI 2026
U16 · Counts
Kids Boys NO-GI / White / Infanto Juvenil B / -51,0 kg
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Kids Boys GI / White / Infanto Juvenil B / -51,0 kg
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Geneva Submission Series #3
U16 · Counts
Geneva Submission Series #3 White & Blue Belts / -45 kg / White Belt / Male / 13-17 years
  • Competition age 15

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 9 matches in the rating period Selected outcome

Registrations and outcomes

Grappling Industries GENEVA
white · Counts as a match
No Gi Kids / 14 - 15 years (Male) / Beginner (White) / -115 lbs
  • Source belt category: white

2 matches in the rating period

Grappling Industries GENEVA
white · Counts as a match
Gi Kids / 14 - 15 years (Male) / White / -115 lbs
  • Source belt category: white

2 matches in the rating period

GIRONA BJJ CUP GI & NO-GI 2026
white · Counts as a match
Kids Boys NO-GI / White / Infanto Juvenil B / -51,0 kg
  • Source belt category: white

1 match in the rating period

GIRONA BJJ CUP GI & NO-GI 2026
white · Counts as a match
Kids Boys GI / White / Infanto Juvenil B / -51,0 kg
  • Source belt category: white

2 matches in the rating period

Geneva Submission Series #3
white · Counts as a match
Geneva Submission Series #3 White & Blue Belts / -45 kg / White Belt / Male / 13-17 years
  • Source belt category: white

2 matches in the rating period