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Kacper Sobczak

Hutton Academy

W–L
10–8
Won and lost rating-eligible matches in the past 12 months.
Gi
1,374
Rating based on Gi matches in the past 12 months.
No-Gi
1,244
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
13
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
2
Silver
2
Bronze
3
Total medals
7
Events with results
3

Full career record

Wins
10
Losses
8
Matches
18
Win rate
55.6%

Ways of winning

Submission
6
Points
3
Decision
0
Disqualification
1

Personal records

Longest winning streak
3
Longest submission streak
2

Recent recorded placements

  3. The Combatch Games 5: Kids & Teens - Berlin

    DE Event record 2–3

    • Teen Boys Nogi / Fortgeschrittene / Junior 2 (10/11yrs) / - 50 kg
    • Teen Boys Gi / White & Grey / Teen 1 (12/13yrs) / - 50 kg
    • Openclass Male Gi (10 - 13 years) / Anfänger / 10 - 13 years / Open Class Heavy (+45kg) (ABGESAGT)

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
1
Unique opponents
13
Distinct events
3

Ways of winning

  • Submission 6 60%
  • Points 3 30%
  • Decision 0 0%
  • Other recorded result 1 10%

Gi versus No-Gi

Gi

Rating
1374
Record
6–3
Win rate
67%
Submission share
67%

No-Gi

Rating
1244
Record
4–5
Win rate
44%
Submission share
50%

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
1,376
Change over 90 days
+107
Highest rating in 12 months
1,376
Performance versus expectation
+2.3 pp
Schedule strength
Top 62%
Average opponent rating
1,304
Weighted win rate
57%
Expected win rate
55%
Repeat-opponent share
28%
Effective evidence
12.5
Confidence
94/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 4–5 4–5 across 9 rematches against 4 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #500 Joleen Bugge · Grappling Industries NUREMBERG Pts 2–0 Earlier · Pts 6–0 March 14, 2026 · Grappling Industries NUREMBERG
  2. #640 Alim Saliji · Southside Battle Trials 2026 - Kinder und Jugendliche Sub 02:43 2–2
  3. #1160 Max Knorr · Grappling Industries NUREMBERG Sub 00:58 9–0
  4. #1219 Maximilian Schmidt · The Combatch Games 5: Kids & Teens - Berlin Pts 11–4

Full career

  1. #500 Joleen Bugge · Grappling Industries NUREMBERG Pts 2–0 Earlier · Pts 6–0 March 14, 2026 · Grappling Industries NUREMBERG
  2. #640 Alim Saliji · Southside Battle Trials 2026 - Kinder und Jugendliche Sub 02:43 2–2
  3. #1160 Max Knorr · Grappling Industries NUREMBERG Sub 00:58 9–0
  4. #1219 Maximilian Schmidt · The Combatch Games 5: Kids & Teens - Berlin Pts 11–4

Rivals

Opponent Head-to-head record Matches
Devin Kupka 1–1 2
Joleen Bugge 2–0 2

Around this athlete

Athlete Rank Rating
Sarb Darius Bogdan #504 1,376
Kacper Sobczak #505 1,376
Max Lentfer #506 1,376

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 1,376

Rating-period composition

Rating matches
18 0
Record
10–8 Previous month 10–8
Opponents
13 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.

July 2026 No new matches Change -1 Rating 1,376

Rating-period composition

Rating matches
18 0
Record
10–8 Previous month 10–8
Opponents
13 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.

June 2026 No new matches Change +1 Rating 1,377

Rating-period composition

Rating matches
18 0
Record
10–8 Previous month 10–8
Opponents
13 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.

May 2026 3 new matches Change +17 Rating 1,376

Rating-period composition

Rating matches
18 +3
Record
10–8 Previous month 8–7
Opponents
13 +2
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.
Loss
May 10, 2026 Devin Kupka
Southside Battle Trials 2026 - Kinder und Jugendliche U13 - male NoGi / U13 - Male - NoGi - Alter 10 Jahre bis 12 Jahre / -53 kg
Method Submission 00:29 0–2
Marginal influence -16
Win
May 10, 2026 Alim Saliji
Southside Battle Trials 2026 - Kinder und Jugendliche U13 - male Gi / U13 - Male - Gi - Alter 10 Jahre bis 12 Jahre / -55 kg
Method Submission 02:43 2–2
Marginal influence +18
Win
May 10, 2026 Devin Kupka
Southside Battle Trials 2026 - Kinder und Jugendliche U13 - male Gi / U13 - Male - Gi - Alter 10 Jahre bis 12 Jahre / -55 kg
Method Disqualification 00:09 0–0
Marginal influence +14
April 2026 No new matches Change +4 Rating 1,359

Rating-period composition

Rating matches
15 0
Record
8–7 Previous month 8–7
Opponents
11 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 10 new matches Change +87 Rating 1,355

Rating-period composition

Rating matches
15 +10
Record
8–7 Previous month 2–3
Opponents
11 +6
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 14, 2026 Miron Betlinsky
Grappling Industries NUREMBERG No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
Method Submission 01:16 0–2
Marginal influence +6
Loss
March 14, 2026 Rostyslav Matuzenko
Grappling Industries NUREMBERG Gi Kids / Grey / 10 - 11 years / -105 lbs
Method Submission 02:49 2–16
Marginal influence -5
Loss
March 14, 2026 Rostyslav Matuzenko
Grappling Industries NUREMBERG No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
Method Points 03:00 4–16
Marginal influence -10
Win
March 14, 2026 Max Knorr
Grappling Industries NUREMBERG No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
Method Submission 00:58 9–0
Marginal influence +8
Win
March 14, 2026 Joleen Bugge
Grappling Industries NUREMBERG No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
Method Points 03:00 2–0
Marginal influence +9
Loss
March 14, 2026 Miron Betlinsky
Grappling Industries NUREMBERG No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
Method Points 03:00 0–2
Marginal influence -11
Win
March 14, 2026 Drago Hieronymus
Grappling Industries NUREMBERG Gi Kids / Grey / 10 - 11 years / -105 lbs
Method Submission 00:24 5–0
Marginal influence +9
Loss
March 14, 2026 Rostyslav Matuzenko
Grappling Industries NUREMBERG Gi Kids / Grey / 10 - 11 years / -105 lbs
Method Submission 01:32 2–0
Marginal influence -5
Win
March 14, 2026 Leonard Kneitel
Grappling Industries NUREMBERG Gi Kids / Grey / 10 - 11 years / -105 lbs
Method Submission 01:53 7–0
Marginal influence +10
Win
March 14, 2026 Joleen Bugge
Grappling Industries NUREMBERG Gi Kids / Grey / 10 - 11 years / -105 lbs
Method Points 03:00 6–0
Marginal influence +13
February 2026 No new matches Change -1 Rating 1,268

Rating-period composition

Rating matches
5 0
Record
2–3 Previous month 2–3
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 5 new matches Change Starting point Rating 1,269

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
January 31, 2026 Unknown User
The Combatch Games 5: Kids & Teens - Berlin Teen Boys Gi / White & Grey / Teen 1 (12/13yrs) / - 50 kg
Method Submission 00:25 0–4
Marginal influence -11
Win
January 31, 2026 Theo Kirschner
The Combatch Games 5: Kids & Teens - Berlin Teen Boys Gi / White & Grey / Teen 1 (12/13yrs) / - 50 kg
Method Submission 02:13 10–0
Marginal influence +13
Loss
January 31, 2026 Berzan Ardic
The Combatch Games 5: Kids & Teens - Berlin Teen Boys Nogi / Fortgeschrittene / Junior 2 (10/11yrs) / - 50 kg
Method Submission 00:36 2–2
Marginal influence -16
Loss
January 31, 2026 André Zaytsev
The Combatch Games 5: Kids & Teens - Berlin Teen Boys Nogi / Fortgeschrittene / Junior 2 (10/11yrs) / - 50 kg
Method Points 04:00 0–9
Marginal influence -15
Win
January 31, 2026 Maximilian Schmidt
The Combatch Games 5: Kids & Teens - Berlin Teen Boys Nogi / Fortgeschrittene / Junior 2 (10/11yrs) / - 50 kg
Method Points 02:51 11–4
Marginal influence +4
Relevant matches
12.5
Official ranking percentile
Top 34%
Performance
2.3 pp above expectation

12.5 weighted matches against 13 different opponents across 3 events

Weighted win rate
57.4%
Expected win rate
55.1%
Average opponent rating
1,304
Repeated-opponent share
27.8%
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 3 event votes Selected outcome

Registrations and outcomes

Southside Battle Trials 2026 - Kinder und Jugendliche
U14 · Counts
U13 - male NoGi / U13 - Male - NoGi - Alter 10 Jahre bis 12 Jahre / -53 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
U13 - male Gi / U13 - Male - Gi - Alter 10 Jahre bis 12 Jahre / -55 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Grappling Industries NUREMBERG
U14 · Counts
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Gi Kids / Grey / 10 - 11 years / -105 lbs
  • Competition age 12
  • Registered age: u12
  • Source category: u12
The Combatch Games 5: Kids & Teens - Berlin
U14 · Counts
Openclass Male Gi (10 - 13 years) / Anfänger / 10 - 13 years / Open Class Heavy (+45kg) (ABGESAGT)
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Teen Boys Nogi / Fortgeschrittene / Junior 2 (10/11yrs) / - 50 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Teen Boys Gi / White & Grey / Teen 1 (12/13yrs) / - 50 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14

Classification evidence

Why ≤ 48 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

  • ≤ 48 kg 1 competition event Selected outcome
  • ≤ 50 kg 1 competition event

Registrations and outcomes

Southside Battle Trials 2026 - Kinder und Jugendliche
≤ 53 kg · Does not count
U13 - male NoGi / U13 - Male - NoGi - Alter 10 Jahre bis 12 Jahre / -53 kg
  • Registered weight class: -53 kg
  • Source competition limit: -53 kg

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

Southside Battle Trials 2026 - Kinder und Jugendliche
≤ 55 kg · Does not count
U13 - male Gi / U13 - Male - Gi - Alter 10 Jahre bis 12 Jahre / -55 kg
  • Registered weight class: -55 kg
  • Source competition limit: -55 kg

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

Grappling Industries NUREMBERG
≤ 48 kg · Counts as a competition event
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
  • Registered weight class: -105 lbs
  • Source competition limit: -105 lbs

5 matches in the rating period

Grappling Industries NUREMBERG
≤ 48 kg · Counts as a competition event
Gi Kids / Grey / 10 - 11 years / -105 lbs
  • Registered weight class: -105 lbs
  • Source competition limit: -105 lbs

5 matches in the rating period

The Combatch Games 5: Kids & Teens - Berlin
Does not count
Openclass Male Gi (10 - 13 years) / Anfänger / 10 - 13 years / Open Class Heavy (+45kg) (ABGESAGT)

No matches in the rating period · no valid weight evidence

The Combatch Games 5: Kids & Teens - Berlin
≤ 50 kg · Counts as a competition event
Teen Boys Nogi / Fortgeschrittene / Junior 2 (10/11yrs) / - 50 kg
  • Registered weight class: - 50 kg
  • Source competition limit: - 50 kg

3 matches in the rating period

The Combatch Games 5: Kids & Teens - Berlin
≤ 50 kg · Counts as a competition event
Teen Boys Gi / White & Grey / Teen 1 (12/13yrs) / - 50 kg
  • Registered weight class: - 50 kg
  • Source competition limit: - 50 kg

2 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 10 matches in the rating period Selected outcome
  • white 2 matches in the rating period

Registrations and outcomes

Grappling Industries NUREMBERG
grey · Counts as a match
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -105 lbs
  • Source belt category: grey

5 matches in the rating period

Grappling Industries NUREMBERG
grey · Counts as a match
Gi Kids / Grey / 10 - 11 years / -105 lbs
  • Source belt category: grey

5 matches in the rating period

The Combatch Games 5: Kids & Teens - Berlin
white · Counts as a match
Teen Boys Gi / White & Grey / Teen 1 (12/13yrs) / - 50 kg
  • Source belt category: white

2 matches in the rating period