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Sam Ekelhoff

Team Kaishin HQ

W–L
5–6
Won and lost rating-eligible matches in the past 12 months.
Gi
1,237
Rating based on Gi matches in the past 12 months.
No-Gi
1,249
Rating based on No-Gi matches in the past 12 months.
Current form
5–5
Results from the ten most recent rating-eligible matches.
Opponents
9
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

10
Events
Date Event Result Format Division
Lion Cub Jiu Jitsu Competition 5 the Netherlands · Gi · 13–14 yo · white/grey · ≤60/65 kg ; No-Gi · 13–14 yo · white/grey · ≤65/70 kg 3–5 W–L: Win / Loss GiNo-Gi
  • Place #4
  • Place #4
2025 NO GI International Veluwe Open Jiu Jitsu Championship the Netherlands · No-Gi · 12–15 yo · grey/yellow · ≤60/65 kg 2–1 W–L: Win / Loss No-Gi
  • Kids No-gi / 12 - 15 years boys / Grey & Yellow / -60 & -65 kg
Nijmegen Open BJJ 2025 the Netherlands · Gi · 13–15 yo · grey · ≤55/60 kg 3–0 W–L: Win / Loss Gi
  • Kids / 13 - 15 years boys / Grey / -55 & -60 kg
International Veluwe Open Jiu Jitsu Championship 2025 (GI) the Netherlands · Gi · 13–15 yo · grey/orange · ≤60 kg 2–1 W–L: Win / Loss Gi
  • Kids Gi / 13 - 15 jaar / Grijs + Oranje / -60 kg
Lion Cub Jiu Jitsu Competition 3 the Netherlands · Gi · white/grey · ≤60 kg 0–3 W–L: Win / Loss Gi
  • Place #6
Nijmegen Open BJJ 2024 the Netherlands · Gi · 10–12 yo · white/grey · ≤50/55 kg 2–2 W–L: Win / Loss Gi
  • Kids / 10 - 12 years boys / White & Grey / -50 & -55 kg
Lion Cub Jiu Jitsu Competition 2 the Netherlands · Gi · white/grey · ≤50/55 kg 3–2 W–L: Win / Loss Gi
  • Boys / 10 - 12 Boys / White & Grey / -50 & -55 kg
Lion Cub Jiu Jitsu Competition 1 the Netherlands · Gi · white/grey · ≤55/60 kg 2–1 W–L: Win / Loss Gi
  • Boys / 10 - 12 Boys / White & Grey / -55 & -60 kg
Grappling Industries AMSTERDAM the Netherlands · Gi · 12–13 yo · grey · ≤115 lb ; No-Gi · 12–13 yo · grey · ≤115 lb 0–4 W–L: Win / Loss GiNo-Gi
  • Gi Kids / Grey / 12 - 13 years (Male) / -115 lbs
  • No Gi Kids / Intermediate (Grey) / 12 - 13 years (Male) / -115 lbs
International Veluwe Open Jiu Jitsu Championship 2023 GI & NO-GI the Netherlands · Gi · 10–12 yo · white/grey · ≤50/55 kg ; No-Gi · 13–15 yo · white/grey · ≤50/55 kg 0–8 W–L: Win / Loss GiNo-Gi
  • Place #5
  • Place #6

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 1,316

Rating-period composition

Rating matches
11 0
Record
5–6 Previous month 5–6
Opponents
9 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 1,315

Rating-period composition

Rating matches
11 0
Record
5–6 Previous month 5–6
Opponents
9 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 1,315

Rating-period composition

Rating matches
11 0
Record
5–6 Previous month 5–6
Opponents
9 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 · 5 left period Change -62 Rating 1,315

Rating-period composition

Rating matches
11 -5
Record
5–6 Previous month 9–7
Opponents
9 -4
Events
2 -2

5 older matches left the 12-month period: 4 won and 1 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 +3 Rating 1,377

Rating-period composition

Rating matches
16 0
Record
9–7 Previous month 9–7
Opponents
13 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.

March 2026 No new matches Change -8 Rating 1,374

Rating-period composition

Rating matches
16 0
Record
9–7 Previous month 9–7
Opponents
13 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.

February 2026 No new matches Change 0 Rating 1,382

Rating-period composition

Rating matches
16 0
Record
9–7 Previous month 9–7
Opponents
13 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.

January 2026 No new matches Change +3 Rating 1,382

Rating-period composition

Rating matches
16 0
Record
9–7 Previous month 9–7
Opponents
13 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.

December 2025 No new matches Change -1 Rating 1,379

Rating-period composition

Rating matches
16 0
Record
9–7 Previous month 9–7
Opponents
13 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.

November 2025 No new matches Change +6 Rating 1,380

Rating-period composition

Rating matches
16 0
Record
9–7 Previous month 9–7
Opponents
13 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.

October 2025 11 new matches · 3 left period Change +87 Rating 1,374

Rating-period composition

Rating matches
16 +8
Record
9–7 Previous month 4–4
Opponents
13 +5
Events
4 +1

3 older matches left the 12-month period: 0 won and 3 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

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
October 25, 2025 Lennon Van Rooijen
Lion Cub Jiu Jitsu Competition 5 Boys NO-GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -65 & -70 kg
Method Submission 00:26 0–0
Marginal influence -16
Loss
October 25, 2025 Fosse Rodenburg
Lion Cub Jiu Jitsu Competition 5 Boys NO-GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -65 & -70 kg
Method Submission 02:04 2–2
Marginal influence -22
Win
October 25, 2025 Hamza Dogan
Lion Cub Jiu Jitsu Competition 5 Boys NO-GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -65 & -70 kg
Method Decision 04:00 0–0
Marginal influence +16
Loss
October 25, 2025 Avdi Sveen
Lion Cub Jiu Jitsu Competition 5 Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
Method Submission 0–5
Marginal influence -5
Loss
October 25, 2025 Fosse Rodenburg
Lion Cub Jiu Jitsu Competition 5 Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
Method Submission 00:25 0–0
Marginal influence -9
Win
October 25, 2025 Youssef Laghzaoui
Lion Cub Jiu Jitsu Competition 5 Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
Method Points 03:00 6–2
Marginal influence +21
Win
October 25, 2025 Leonardo Kremer
Lion Cub Jiu Jitsu Competition 5 Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
Method Points 03:00 2–2
Marginal influence +12
Loss
October 25, 2025 Lennon Van Rooijen
Lion Cub Jiu Jitsu Competition 5 Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
Method Points 03:00 0–6
Marginal influence -14
Win
October 18, 2025 Brandon Peroti
2025 NO GI International Veluwe Open Jiu Jitsu Championship Kids No-gi / 12 - 15 years boys / Grey & Yellow / -60 & -65 kg
Method Points 05:00 9–0
Marginal influence +15
Win
October 18, 2025 Fedde Bronsema
2025 NO GI International Veluwe Open Jiu Jitsu Championship Kids No-gi / 12 - 15 years boys / Grey & Yellow / -60 & -65 kg
Method Points 04:00 15–0
Marginal influence +14
Loss
October 18, 2025 Ricardo Veenstra
2025 NO GI International Veluwe Open Jiu Jitsu Championship Kids No-gi / 12 - 15 years boys / Grey & Yellow / -60 & -65 kg
Method Submission 01:36 0–8
Marginal influence -14
September 2025 No new matches Change -4 Rating 1,287

Rating-period composition

Rating matches
8 0
Record
4–4 Previous month 4–4
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.

Relevant matches
7.9
Official ranking percentile
Top 56%
Performance
-

7.9 weighted matches against 9 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,316
Repeated-opponent share
18.2%
Network connectivity
87.6%

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 1 event vote Selected outcome

Registrations and outcomes

Lion Cub Jiu Jitsu Competition 5
U16 · Counts
Boys NO-GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -65 & -70 kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16
Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
  • Competition age 14
  • Registered age: u14
  • Source category: u14
2025 NO GI International Veluwe Open Jiu Jitsu Championship
Does not count
Kids No-gi / 12 - 15 years boys / Grey & Yellow / -60 & -65 kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16

Classification evidence

Why ≤ 65 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

  • ≤ 65 kg 1 competition event Selected outcome

Registrations and outcomes

Lion Cub Jiu Jitsu Competition 5
≤ 65 kg · Does not count
Boys NO-GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -65 & -70 kg
  • Registered weight class: -65 kg
  • Source competition limit: -65 kg

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

Lion Cub Jiu Jitsu Competition 5
≤ 75 kg · Does not count
Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
  • Registered weight class: -75 kg
  • Source competition limit: -75 kg

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

2025 NO GI International Veluwe Open Jiu Jitsu Championship
≤ 65 kg · Counts as a competition event
Kids No-gi / 12 - 15 years boys / Grey & Yellow / -60 & -65 kg
  • Registered weight class: -65 kg
  • Source competition limit: -65 kg

3 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 6 matches in the rating period Selected outcome
  • yellow 5 matches in the rating period

Registrations and outcomes

Lion Cub Jiu Jitsu Competition 5
grey · Counts as a match
Boys NO-GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -65 & -70 kg
  • Source belt category: grey

3 matches in the rating period

Lion Cub Jiu Jitsu Competition 5
yellow · Counts as a match
Boys GI / 13 & 14 years old (DAY 1: Saturday) / White & Grey belt / -60 & -65 kg
  • Source belt category: yellow

5 matches in the rating period

2025 NO GI International Veluwe Open Jiu Jitsu Championship
grey · Counts as a match
Kids No-gi / 12 - 15 years boys / Grey & Yellow / -60 & -65 kg
  • Source belt category: grey

3 matches in the rating period