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David Plak

Unity99

W–L
12–3
Won and lost rating-eligible matches in the past 12 months.
Gi
1,382
Rating based on Gi matches in the past 12 months.
No-Gi
1,356
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
9
Unique opponents faced in rating-eligible matches in the past 12 months.

Scheduled

  2. 2026 AGF Amsterdam Open

    the Netherlands

    Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather III (Up to 38.60 kg) No Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather III (Up to 38.60 kg)
    Confirmed

  4. Cauliflower Cup Circuit 3

    the Netherlands

    Boys Gi / White / Pee Wee I (7yrs) / -36,30 kg Boys No-Gi / White / Pee Wee I (7 yrs) / -34,80 kg
    Confirmed

  6. Grappling Industries AMSTERDAM

    the Netherlands

    No Gi Kids / 6 - 7 years / Beginner (White) / -85 lbs Gi Kids / 6 - 7 years / White / -85 lbs
    Unconfirmed

  7. Lion Cub Jiu Jitsu Competition 7

    the Netherlands

    Boys GI / 7 years old / White belt / -38 kg Boys NO-GI / 7 years old / White belt / -38 kg
    Confirmed

  10. 2026 AGF European Championships

    the Netherlands

    Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather III (Up to 38.60 kg) No Gi Kids / Boys / Kids (8 - 9 yrs) / White / Feather III (Up to 38.60 kg)
    Confirmed

  12. Grappling Industries AMSTERDAM

    the Netherlands

    No Gi Kids / 8 - 9 years / Beginner (White) / -85 lbs Gi Kids / 8 - 9 years / White / -85 lbs
    Unconfirmed

Tournament history

Events

6
Events
Date Event Result Format Division
All Stars BJJ Netherlands the Netherlands · Gi · white ; Juniornogi / Beginner / Junior 1 / 34kg or less / Male 3–1 W–L: Win / Loss GiNo-Gi
  • Juniornogi / Beginner / Junior 1 / 34kg or less / Male
  • Junior / White / Junior 1 / 34kg or less / Male
2026 AGF Antwerp Championships Belgium · Gi · 6–7 yo · white · ≤34 kg ; No-Gi · 6–7 yo · white · ≤34 kg 4–0 W–L: Win / Loss GiNo-Gi
  • Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
  • No Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
Nijmegen Open BJJ 2026 the Netherlands · Gi · 6–7 yo · white · ≤30/34 kg 1–3 W–L: Win / Loss Gi
  • Place #5
Lion Cub Jiu Jitsu Competition 6 the Netherlands · Gi · 6–7 yo · white · ≤34 kg ; No-Gi · 6–7 yo · white · ≤34 kg 5–0 W–L: Win / Loss GiNo-Gi
  • Boys NO-GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
  • Boys GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
GrappleCity: Rotterdam Spring Open the Netherlands · Gi · 6–7 yo · white · ≤30 kg 1–1 W–L: Win / Loss Gi
  • Kids Gi / White / Kids 6-7 years / -30kg
GrappleCity: Rotterdam Winter Open the Netherlands · Gi · 6–7 yo · white · ≤30 kg 1–1 W–L: Win / Loss Gi
  • Kids Gi / White / Kids 6-7 years / -30kg

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 +2 Rating 1,433

Rating-period composition

Rating matches
15 0
Record
12–3 Previous month 12–3
Opponents
9 0
Events
6 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 +2 Rating 1,431

Rating-period composition

Rating matches
15 0
Record
12–3 Previous month 12–3
Opponents
9 0
Events
6 0

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

June 2026 5 new matches Change +40 Rating 1,429

Rating-period composition

Rating matches
15 +5
Record
12–3 Previous month 8–2
Opponents
9 +2
Events
6 +2

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 28, 2026 Zeyneb Saglam
All Stars BJJ Netherlands Junior / White / Junior 1 / 34kg or less / Male
Method Submission 02:49 0–5
Marginal influence -27
Win
June 13, 2026 Jim Tol
2026 AGF Antwerp Championships No Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
Method Submission 00:19 0–2
Marginal influence +7
Win
June 13, 2026 Jim Tol
2026 AGF Antwerp Championships No Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
Method Points 02:00 11–4
Marginal influence +7
Win
June 13, 2026 Jim Tol
2026 AGF Antwerp Championships Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
Method Submission 00:28 0–1
Marginal influence +13
Win
June 13, 2026 Jim Tol
2026 AGF Antwerp Championships Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
Method Submission 01:31 5–4
Marginal influence +13
May 2026 6 new matches Change +172 Rating 1,389

Rating-period composition

Rating matches
10 +6
Record
8–2 Previous month 2–2
Opponents
7 +4
Events
4 +2

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 30, 2026 Alex Phan
Nijmegen Open BJJ 2026 Kids / 6 - 7 years / White / -30 & -34 kg
Method Submission 01:42 12–0
Marginal influence +13
Win
May 9, 2026 Liam Koevoets
Lion Cub Jiu Jitsu Competition 6 Boys NO-GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
Method Submission 00:29 4–0
Marginal influence +5
Win
May 9, 2026 Cezar Gaitan
Lion Cub Jiu Jitsu Competition 6 Boys NO-GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
Method Submission 01:53 26–0
Marginal influence +8
Win
Lion Cub Jiu Jitsu Competition 6 Boys GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
Method Submission 00:31 6–0
Marginal influence +7
Win
May 9, 2026 Cezar Gaitan
Lion Cub Jiu Jitsu Competition 6 Boys GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
Method Points 03:00 6–0
Marginal influence +11
Win
May 9, 2026 Liam Koevoets
Lion Cub Jiu Jitsu Competition 6 Boys GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
Method Submission 00:35 0–0
Marginal influence +7
April 2026 No new matches Change -3 Rating 1,217

Rating-period composition

Rating matches
4 0
Record
2–2 Previous month 2–2
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 No new matches Change +2 Rating 1,220

Rating-period composition

Rating matches
4 0
Record
2–2 Previous month 2–2
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.

February 2026 2 new matches Change +13 Rating 1,218

Rating-period composition

Rating matches
4 +2
Record
2–2 Previous month 1–1
Opponents
3 +1
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
February 22, 2026 Mika Vroon
GrappleCity: Rotterdam Spring Open Kids Gi / White / Kids 6-7 years / -30kg
Method Submission 01:15 7–0
Marginal influence +5
Loss
February 22, 2026 Saifedinne Bouhany
GrappleCity: Rotterdam Spring Open Kids Gi / White / Kids 6-7 years / -30kg
Method Points 03:00 0–10
Marginal influence -7
January 2026 No new matches Change +4 Rating 1,205

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
Opponents
2 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 1,201

Rating-period composition

Rating matches
2 0
Record
1–1 Previous month 1–1
Opponents
2 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 2 new matches Change Starting point Rating 1,201

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 9, 2025 Liam Wolt
GrappleCity: Rotterdam Winter Open Kids Gi / White / Kids 6-7 years / -30kg
Method Submission 0–0
Marginal influence -21
Win
November 9, 2025 Mika Vroon
GrappleCity: Rotterdam Winter Open Kids Gi / White / Kids 6-7 years / -30kg
Method Submission 02:49 12–7
Marginal influence +5
Relevant matches
11.2
Official ranking percentile
Top 20%
Performance
20.9 pp above expectation

11.2 weighted matches against 9 different opponents across 6 events

Weighted win rate
76.6%
Expected win rate
55.7%
Average opponent rating
1,298
Repeated-opponent share
40.0%
Network connectivity
87.6%

Classification evidence

Why U10?

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

  • U10 6 event votes Selected outcome

Registrations and outcomes

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U10 · Counts
Boys Gi (under 16 y.o.) / White / 6-7 years / -34 kg
  • Competition age 8
  • Registered age: u8
  • Source category: u8
Boys No-Gi (under 16 y.o.) / White / 6-7 years / -34 kg
  • Competition age 8
  • Registered age: u8
  • Source category: u8
All Stars BJJ Netherlands
U10 · Counts
Junior / White / Junior 1 / 34kg or less / Male
  • Competition age 8
  • Registered age: u10
  • Source category: u10
Juniornogi / Beginner / Junior 1 / 34kg or less / Male
  • Competition age 8
  • Registered age: u10
  • Source category: u10
2026 AGF Antwerp Championships
U10 · Counts
Competition T-shirt / Adult Medium
No Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
  • Competition age 8
  • Registered age: u8
  • Source category: u8
Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
  • Competition age 8
  • Registered age: u8
  • Source category: u8
Nijmegen Open BJJ 2026
U10 · Counts
Kids / 6 - 7 years / White / -30 & -34 kg
  • Competition age 8
  • Registered age: u8
  • Source category: u8
Lion Cub Jiu Jitsu Competition 6
U10 · Counts
Boys NO-GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
  • Competition age 8
  • Registered age: u8
  • Source category: u8
Boys GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
  • Competition age 8
  • Registered age: u8
  • Source category: u8
GrappleCity: Rotterdam Spring Open
U10 · Counts
Kids Gi / White / Kids 6-7 years / -30kg
  • Competition age 8
  • Registered age: u8
  • Source category: u8
GrappleCity: Rotterdam Winter Open
Does not count
Kids Gi / White / Kids 6-7 years / -30kg
  • Competition age 7
  • Registered age: u8
  • Source category: u8

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 3 competition events Selected outcome

Registrations and outcomes

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys Gi (under 16 y.o.) / White / 6-7 years / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

No matches in the rating period · no valid weight evidence

COLOGNE SUMMER OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys No-Gi (under 16 y.o.) / White / 6-7 years / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

No matches in the rating period · no valid weight evidence

All Stars BJJ Netherlands
Does not count
Junior / White / Junior 1 / 34kg or less / Male

1 match in the rating period · weight class could not be normalized reliably

All Stars BJJ Netherlands
Does not count
Juniornogi / Beginner / Junior 1 / 34kg or less / Male

No matches in the rating period · no valid weight evidence

2026 AGF Antwerp Championships
Does not count
Competition T-shirt / Adult Medium

No matches in the rating period · no valid weight evidence

2026 AGF Antwerp Championships
≤ 34 kg · Counts as a competition event
No Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
  • Registered weight class: Feather II (Up to 34.00 kg)
  • Source competition limit: Feather II (Up to 34.00 kg)

2 matches in the rating period

2026 AGF Antwerp Championships
≤ 34 kg · Counts as a competition event
Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
  • Registered weight class: Feather II (Up to 34.00 kg)
  • Source competition limit: Feather II (Up to 34.00 kg)

2 matches in the rating period

Nijmegen Open BJJ 2026
≤ 34 kg · Counts as a competition event
Kids / 6 - 7 years / White / -30 & -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

1 match in the rating period

Lion Cub Jiu Jitsu Competition 6
≤ 34 kg · Counts as a competition event
Boys NO-GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

2 matches in the rating period

Lion Cub Jiu Jitsu Competition 6
≤ 34 kg · Counts as a competition event
Boys GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
  • Registered weight class: -34 kg
  • Source competition limit: -34 kg

3 matches in the rating period

GrappleCity: Rotterdam Spring Open
≤ 30 kg · Does not count
Kids Gi / White / Kids 6-7 years / -30kg
  • Registered weight class: -30kg
  • Source competition limit: -30kg

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

GrappleCity: Rotterdam Winter Open
≤ 30 kg · Does not count
Kids Gi / White / Kids 6-7 years / -30kg
  • Registered weight class: -30kg
  • Source competition limit: -30kg

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

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 15 matches in the rating period Selected outcome

Registrations and outcomes

All Stars BJJ Netherlands
white · Counts as a match
Junior / White / Junior 1 / 34kg or less / Male
  • Source belt category: white

1 match in the rating period

2026 AGF Antwerp Championships
white · Counts as a match
No Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
  • Source belt category: white

2 matches in the rating period

2026 AGF Antwerp Championships
white · Counts as a match
Gi Kids / Boys / Little Kids (6 - 7 yrs) / White / Feather II (Up to 34.00 kg)
  • Source belt category: white

2 matches in the rating period

Nijmegen Open BJJ 2026
white · Counts as a match
Kids / 6 - 7 years / White / -30 & -34 kg
  • Source belt category: white

1 match in the rating period

Lion Cub Jiu Jitsu Competition 6
white · Counts as a match
Boys NO-GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
  • Source belt category: white

2 matches in the rating period

Lion Cub Jiu Jitsu Competition 6
white · Counts as a match
Boys GI / 6 & 7 years old (DAY 2: Sunday) / White belt / -34 kg
  • Source belt category: white

3 matches in the rating period

GrappleCity: Rotterdam Spring Open
white · Counts as a match
Kids Gi / White / Kids 6-7 years / -30kg
  • Source belt category: white

2 matches in the rating period

GrappleCity: Rotterdam Winter Open
white · Counts as a match
Kids Gi / White / Kids 6-7 years / -30kg
  • Source belt category: white

2 matches in the rating period