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Leonard Strack

HAUSE739 JIU-JITSU

W–L
2–6
Won and lost rating-eligible matches in the past 12 months.
Gi
1,095
Rating based on Gi matches in the past 12 months.
No-Gi
1,275
Rating based on No-Gi matches in the past 12 months.
Current form
2–6
Results from the ten most recent rating-eligible matches.
Opponents
5
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

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

Full career record

Wins
2
Losses
8
Matches
10
Win rate
20.0%

Ways of winning

Submission
0
Points
0
Decision
0
Disqualification
2

Personal records

Longest winning streak
1

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
5
Distinct events
2

Ways of winning

  • Submission 0 0%
  • Points 0 0%
  • Decision 0 0%
  • Other recorded result 2 100%

Gi versus No-Gi

Gi

Rating
1095
Record
0–5
Win rate
0%
Submission share
-

No-Gi

Rating
1275
Record
2–1
Win rate
67%
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
1,240
Change over 90 days
-
Highest rating in 12 months
1,241
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,461
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
38%
Effective evidence
6.6
Confidence
75/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 2–6 2–6 across 8 rematches against 4 repeat opponents.

Rivals

Opponent Head-to-head record Matches
David Lazic 1–1 2
Nuaym Nguyen 0–2 2

Around this athlete

Athlete Rank Rating
Sergo Vartanov #1155 1,241
Leonard Strack #1156 1,240
Reda El Bouyafsakh #1157 1,240

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 -1 Rating 1,240

Rating-period composition

Rating matches
8 0
Record
2–6 Previous month 2–6
Opponents
5 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 1,241

Rating-period composition

Rating matches
8 0
Record
2–6 Previous month 2–6
Opponents
5 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 4 new matches Change +27 Rating 1,241

Rating-period composition

Rating matches
8 +4
Record
2–6 Previous month 1–3
Opponents
5 +2
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
June 27, 2026 Max Hammerschmidt
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Disqualification 02:23 2–0
Marginal influence +27
Loss
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Submission 00:49 0–7
Marginal influence +8
Loss
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Submission 00:14 0–0
Marginal influence -16
Loss
June 27, 2026 Max Hammerschmidt
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Points 03:00 4–10
Marginal influence -27
May 2026 No new matches Change 0 Rating 1,214

Rating-period composition

Rating matches
4 0
Record
1–3 Previous month 1–3
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.

April 2026 4 new matches Change Starting point Rating 1,214

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
April 18, 2026 David Lazic
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
Method Disqualification 00:32 0–7
Marginal influence +26
Loss
April 18, 2026 Paul Benedikt
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Submission 02:47 0–0
Marginal influence -23
Loss
April 18, 2026 David Lazic
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Submission 02:06 0–10
Marginal influence -19
Loss
April 18, 2026 Nuaym Nguyen
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
Method Submission 00:48 0–4
Marginal influence -15
Relevant matches
6.6
Official ranking percentile
Top 78%
Performance
-

6.6 weighted matches against 5 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,461
Repeated-opponent share
37.5%
Network connectivity
87.6%

Classification evidence

Why U12?

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

  • U12 2 event votes Selected outcome

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
U12 · Counts
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U12 · Counts
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 34 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

  • ≤ 34 kg 1 competition event Selected outcome

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
≤ 34 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

2 matches in the rating period

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
≤ 34 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 38 kg · Does not count
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Registered weight class: -38 kg
  • Source competition limit: -38 kg

1 match in the rating period · conflicting upper weight limits make this event ambiguous

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 34 kg · Does not count
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

3 matches in the rating period · conflicting upper weight limits make this event ambiguous

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 7 matches in the rating period Selected outcome
  • yellow 1 match in the rating period

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
grey · Counts as a match
Boys No-Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Source belt category: grey

2 matches in the rating period

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
grey · Counts as a match
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Source belt category: grey

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
yellow · Counts as a match
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Source belt category: yellow

1 match in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
grey · Counts as a match
Boys Gi (under 16 y.o.) / Grey / 10-11 years / -34 kg
  • Source belt category: grey

3 matches in the rating period