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NL

Dinand Groenewoud

Brazilian Jiu Jitsu Zandvoort

W–L
1–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,175
Rating based on Gi matches in the past 12 months.
No-Gi
1,107
Rating based on No-Gi matches in the past 12 months.
Current form
1–5
Results from the ten most recent rating-eligible matches.
Opponents
3
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
1
Silver
2
Bronze
2
Total medals
5
Events with results
6

Full career record

Wins
2
Losses
11
Matches
13
Win rate
15.4%

Ways of winning

Submission
0
Points
2
Decision
0
Disqualification
0

Personal records

Longest winning streak
1

Recent recorded placements

  2. Cauliflower Cup Circuit

    NL Event record 0–0

    • Place 9

  3. Grappling Industries AMSTERDAM

    NL Event record 0–0

    • No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
    • Gi Kids / 16 - 17 years (Male) / White / -155 lbs

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
3
Distinct events
1

Ways of winning

  • Submission 0 0%
  • Points 1 100%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1175
Record
1–2
Win rate
33%
Submission share
0%

No-Gi

Rating
1107
Record
0–3
Win rate
0%
Submission share
-

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
1,216
Change over 90 days
-18
Highest rating in 12 months
1,227
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,316
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
50%
Effective evidence
3.6
Confidence
54/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 1–6 1–6 across 7 rematches against 2 repeat opponents.

Rivals

Opponent Head-to-head record Matches
Timo Boelens 1–3 4
Mike Kragten 0–3 3

Recent tournaments

  1. Grappling Industries AMSTERDAM

    May 3, 2026
    Gi / No-Gi 0–0

  2. Cauliflower Cup Circuit

    March 15, 2026
    No-Gi 0–0

  3. Grappling Industries AMSTERDAM

    March 1, 2026
    Gi / No-Gi 0–0

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 · 2 left period Change +22 Rating 1,216

Rating-period composition

Rating matches
6 -2
Record
1–5 Previous month 1–7
Opponents
3 -2
Events
1 -1

2 older matches left the 12-month period: 0 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

July 2026 No new matches Change 0 Rating 1,194

Rating-period composition

Rating matches
8 0
Record
1–7 Previous month 1–7
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 No new matches Change 0 Rating 1,194

Rating-period composition

Rating matches
8 0
Record
1–7 Previous month 1–7
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.

May 2026 No new matches · 4 left period Change -12 Rating 1,194

Rating-period composition

Rating matches
8 -4
Record
1–7 Previous month 2–10
Opponents
5 -3
Events
2 -1

4 older matches left the 12-month period: 1 won and 3 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

April 2026 No new matches Change 0 Rating 1,206

Rating-period composition

Rating matches
12 0
Record
2–10 Previous month 2–10
Opponents
8 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.

March 2026 No new matches Change +2 Rating 1,206

Rating-period composition

Rating matches
12 0
Record
2–10 Previous month 2–10
Opponents
8 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.

February 2026 No new matches Change -5 Rating 1,204

Rating-period composition

Rating matches
12 0
Record
2–10 Previous month 2–10
Opponents
8 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.

January 2026 No new matches Change 0 Rating 1,209

Rating-period composition

Rating matches
12 0
Record
2–10 Previous month 2–10
Opponents
8 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.

December 2025 No new matches Change 0 Rating 1,209

Rating-period composition

Rating matches
12 0
Record
2–10 Previous month 2–10
Opponents
8 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.

November 2025 6 new matches Change -16 Rating 1,209

Rating-period composition

Rating matches
12 +6
Record
2–10 Previous month 1–5
Opponents
8 +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.
Loss
November 2, 2025 Blendi Kelmendi
Grappling Industries AMSTERDAM No Gi Teens / Male / Beginner (White) / 16 - 17 years / -155 lbs
Method Decision 04:00 0–0
Marginal influence -19
Loss
November 2, 2025 Timo Boelens
Grappling Industries AMSTERDAM No Gi Teens / Male / Beginner (White) / 16 - 17 years / -155 lbs
Method Submission 02:41 2–0
Marginal influence -24
Loss
November 2, 2025 Rayan Ramdani
Grappling Industries AMSTERDAM No Gi Teens / Male / Beginner (White) / 16 - 17 years / -155 lbs
Method Submission 01:28 0–2
Marginal influence -21
Loss
November 2, 2025 Timo Boelens
Grappling Industries AMSTERDAM Gi Teens / Male / White / 16 - 17 years / -155 lbs
Method Points 04:00 2–6
Marginal influence -1
Win
November 2, 2025 Timo Boelens
Grappling Industries AMSTERDAM Gi Teens / Male / White / 16 - 17 years / -155 lbs
Method Points 04:00 4–0
Marginal influence +18
Loss
November 2, 2025 Timo Boelens
Grappling Industries AMSTERDAM Gi Teens / Male / White / 16 - 17 years / -155 lbs
Method Points 04:00 2–2
Marginal influence -1
October 2025 No new matches Change -2 Rating 1,225

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
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.

September 2025 No new matches Change 0 Rating 1,227

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
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.

Relevant matches
3.6
Official ranking percentile
-
Performance
-

3.6 weighted matches against 3 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,316
Repeated-opponent share
50.0%
Network connectivity
87.6%

Classification evidence

Why U18?

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

  • U18 4 event votes Selected outcome

Registrations and outcomes

Grappling Industries AMSTERDAM
Does not count
No Gi Adult / Male / Beginner (White) / Adult / -170 lbs
  • Competition age 18
Grappling Industries AMSTERDAM
U18 · Counts
No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
  • Competition age 18
  • Registered age: u18
  • Source category: u18
Gi Kids / 16 - 17 years (Male) / White / -155 lbs
  • Competition age 18
  • Registered age: u18
  • Source category: u18
2026 AGF Netherlands Championships
Does not count
No Gi Juveniles - Adults / Male / Juvenile / White / Feather (Up to 72.60 kg)
  • Competition age 18
Gi Juveniles - Adults / Male / Juvenile / White / Feather (Up to 72.60 kg)
  • Competition age 18
NEDMMA | Grappling Dutch Open 2026 (GDO26) - No Gi
U18 · Counts
No Gi - U18 | Male - Weight Classes / U18 - Male / Intermediate | INT - U18 / -71 kg | No Gi
  • Competition age 18
  • Registered age: u18
  • Source category: u18
Cauliflower Cup Circuit
Does not count
Male No-Gi / White / Adult / -73,5 kg (Light)
  • Competition age 18
Grappling Industries AMSTERDAM
U18 · Counts
No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
  • Competition age 18
  • Registered age: u18
  • Source category: u18
Gi Kids / 16 - 17 years (Male) / White / -155 lbs
  • Competition age 18
  • Registered age: u18
  • Source category: u18
Grappling Industries AMSTERDAM
U18 · Counts
No Gi Teens / Male / Beginner (White) / 16 - 17 years / -155 lbs
  • Competition age 17
  • Registered age: u18
  • Source category: u18
Gi Teens / Male / White / 16 - 17 years / -155 lbs
  • Competition age 17
  • Registered age: u18
  • Source category: u18

Classification evidence

Why ≤ 70 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

  • ≤ 70 kg 1 competition event Selected outcome

Registrations and outcomes

Grappling Industries AMSTERDAM
Does not count
No Gi Adult / Male / Beginner (White) / Adult / -170 lbs
  • Registered weight class: -170 lbs
  • Source competition limit: -170 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
Gi Kids / 16 - 17 years (Male) / White / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

No matches in the rating period · no valid weight evidence

2026 AGF Netherlands Championships
Does not count
No Gi Juveniles - Adults / Male / Juvenile / White / Feather (Up to 72.60 kg)
  • Registered weight class: Feather (Up to 72.60 kg)
  • Source competition limit: Feather (Up to 72.60 kg)

No matches in the rating period · no valid weight evidence

2026 AGF Netherlands Championships
Does not count
Gi Juveniles - Adults / Male / Juvenile / White / Feather (Up to 72.60 kg)
  • Registered weight class: Feather (Up to 72.60 kg)
  • Source competition limit: Feather (Up to 72.60 kg)

No matches in the rating period · no valid weight evidence

NEDMMA | Grappling Dutch Open 2026 (GDO26) - No Gi
Does not count
No Gi - U18 | Male - Weight Classes / U18 - Male / Intermediate | INT - U18 / -71 kg | No Gi
  • Registered weight class: -71 kg | No Gi
  • Source competition limit: -71 kg | No Gi

No matches in the rating period · no valid weight evidence

Cauliflower Cup Circuit
Does not count
Male No-Gi / White / Adult / -73,5 kg (Light)
  • Registered weight class: -73,5 kg (Light)
  • Source competition limit: -73,5 kg (Light)

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
No Gi Kids / 16 - 17 years (Male) / Beginner (White) / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
Gi Kids / 16 - 17 years (Male) / White / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
≤ 70 kg · Counts as a competition event
No Gi Teens / Male / Beginner (White) / 16 - 17 years / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

3 matches in the rating period

Grappling Industries AMSTERDAM
≤ 70 kg · Counts as a competition event
Gi Teens / Male / White / 16 - 17 years / -155 lbs
  • Registered weight class: -155 lbs
  • Source competition limit: -155 lbs

3 matches in the rating period

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 6 matches in the rating period Selected outcome

Registrations and outcomes

Grappling Industries AMSTERDAM
white · Counts as a match
No Gi Teens / Male / Beginner (White) / 16 - 17 years / -155 lbs
  • Source belt category: white

3 matches in the rating period

Grappling Industries AMSTERDAM
white · Counts as a match
Gi Teens / Male / White / 16 - 17 years / -155 lbs
  • Source belt category: white

3 matches in the rating period