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Mees Van Santen

Jiu Jitsu Factory

W–L
1–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,146
Rating based on Gi matches in the past 12 months.
No-Gi
-
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
6
Unique opponents faced in rating-eligible matches in the past 12 months.

Scheduled

Tournament history

Events

10
Events
Date Event Result Format Division
Nijmegen Open BJJ 2026 the Netherlands · Gi · 10–12 yo · yellow · ≤42 kg 0–4 W–L: Win / Loss Gi
  • Place #5
Lion Cub Jiu Jitsu Competition 5 the Netherlands · Gi · 9 yo · white/grey/yellow · ≤42/46 kg 1–1 W–L: Win / Loss Gi
  • Boys GI / 9 years old (DAY 2: Sunday) / White & Grey & Yellow belt / -42 & -46 kg
Nijmegen Open BJJ 2025 the Netherlands · Gi · 8–9 yo · grey/yellow · ≤38 kg 1–3 W–L: Win / Loss Gi
  • Place #4
Versus Contender 4 the Netherlands · Gi · ≤38 kg 0–1 W–L: Win / Loss Gi
  • Super Fights / Alec Besems × Mees van Santen (-38 kg GI)
Lion Cub Jiu Jitsu Competition 4 the Netherlands · Gi · 8–9 yo · yellow · ≤38/42 kg 0–2 W–L: Win / Loss Gi
  • Boys GI / 8 & 9 years old (DAY 2: Sunday) / Yellow belt / -38 & -42 kg
'The Future League 5' by VERSUS the Netherlands · Gi · 8–10 yo · ≤38 kg 2–2 W–L: Win / Loss Gi
  • Place #4
LET`S ROLL UTRECHT III the Netherlands · Gi · 8–10 yo · ≤34 kg 2–0 W–L: Win / Loss Gi
  • Gi Kids / Beginner / 8-10 years / -34 kg
King of the Beach 2024 the Netherlands · Gi · 8–9 yo · white · ≤34 kg 2–0 W–L: Win / Loss Gi
  • Sunday Kids Gi / 8 - 9 years boys / White / -34 kg
Nijmegen Open BJJ 2024 the Netherlands · Gi · 8–9 yo · white/grey · ≤34 kg 4–1 W–L: Win / Loss Gi
  • Kids / 8 - 9 years boys / White & Grey / -34 kg
Lion Cub Jiu Jitsu Competition 2 the Netherlands · Gi · white/grey · ≤34 kg 2–1 W–L: Win / Loss Gi
  • Boys / 8 - 9 Boys / White & Grey / -34 kg

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 1,146

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
6 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 1,144

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
6 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 +1 Rating 1,144

Rating-period composition

Rating matches
6 0
Record
1–5 Previous month 1–5
Opponents
6 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 4 new matches · 5 left period Change -93 Rating 1,143

Rating-period composition

Rating matches
6 -1
Record
1–5 Previous month 2–5
Opponents
6 0
Events
2 -1

5 older matches left the 12-month period: 1 won and 4 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
May 30, 2026 Boaz Van Der Bom
Nijmegen Open BJJ 2026 Kids / 10 - 12 years boys / Yellow / -42 kg
Method Submission 01:01 0–9
Marginal influence -11
Loss
May 30, 2026 Alexander Wouters
Nijmegen Open BJJ 2026 Kids / 10 - 12 years boys / Yellow / -42 kg
Method Points 03:00 0–18
Marginal influence -31
Loss
May 30, 2026 Dex Van Rijswijck
Nijmegen Open BJJ 2026 Kids / 10 - 12 years boys / Yellow / -42 kg
Method Points 03:00 0–2
Marginal influence -20
Loss
May 30, 2026 Muhammad Hotak
Nijmegen Open BJJ 2026 Kids / 10 - 12 years boys / Yellow / -42 kg
Method Submission 02:01 0–19
Marginal influence -11
April 2026 No new matches · 2 left period Change +11 Rating 1,236

Rating-period composition

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

March 2026 No new matches Change -1 Rating 1,225

Rating-period composition

Rating matches
9 0
Record
2–7 Previous month 2–7
Opponents
7 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 -2 Rating 1,226

Rating-period composition

Rating matches
9 0
Record
2–7 Previous month 2–7
Opponents
7 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 -4 Rating 1,228

Rating-period composition

Rating matches
9 0
Record
2–7 Previous month 2–7
Opponents
7 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 1,232

Rating-period composition

Rating matches
9 0
Record
2–7 Previous month 2–7
Opponents
7 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 · 2 left period Change -68 Rating 1,231

Rating-period composition

Rating matches
9 -2
Record
2–7 Previous month 4–7
Opponents
7 -2
Events
4 -1

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

October 2025 2 new matches Change +15 Rating 1,299

Rating-period composition

Rating matches
11 +2
Record
4–7 Previous month 3–6
Opponents
9 +2
Events
5 +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
October 25, 2025 Thomas Peeks
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / White & Grey & Yellow belt / -42 & -46 kg
Method Points 03:00 0–6
Marginal influence -27
Win
October 25, 2025 Noud Maes
Lion Cub Jiu Jitsu Competition 5 Boys GI / 9 years old (DAY 2: Sunday) / White & Grey & Yellow belt / -42 & -46 kg
Method Submission 01:39 0–0
Marginal influence +43
September 2025 No new matches Change +1 Rating 1,284

Rating-period composition

Rating matches
9 0
Record
3–6 Previous month 3–6
Opponents
7 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.

Relevant matches
4.5
Official ranking percentile
Top 95%
Performance
-

4.5 weighted matches against 6 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,351
Repeated-opponent share
0.0%
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 1 event vote Selected outcome

Registrations and outcomes

Nijmegen Open BJJ 2026
U12 · Counts
Kids / 10 - 12 years boys / Yellow / -42 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Lion Cub Jiu Jitsu Competition 5
Does not count
Boys GI / 9 years old (DAY 2: Sunday) / White & Grey & Yellow belt / -42 & -46 kg
  • Competition age 10
  • Registered age: u10
  • Source category: u10

Classification evidence

Why ≤ 42 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

  • ≤ 42 kg 2 competition events Selected outcome

Registrations and outcomes

Nijmegen Open BJJ 2026
≤ 42 kg · Counts as a competition event
Kids / 10 - 12 years boys / Yellow / -42 kg
  • Registered weight class: -42 kg
  • Source competition limit: -42 kg

4 matches in the rating period

Lion Cub Jiu Jitsu Competition 5
≤ 42 kg · Counts as a competition event
Boys GI / 9 years old (DAY 2: Sunday) / White & Grey & Yellow belt / -42 & -46 kg
  • Registered weight class: -42 kg
  • Source competition limit: -42 kg

2 matches in the rating period

Classification evidence

Why Yellow?

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

  • yellow 6 matches in the rating period Selected outcome

Registrations and outcomes

Nijmegen Open BJJ 2026
yellow · Counts as a match
Kids / 10 - 12 years boys / Yellow / -42 kg
  • Source belt category: yellow

4 matches in the rating period

Lion Cub Jiu Jitsu Competition 5
yellow · Counts as a match
Boys GI / 9 years old (DAY 2: Sunday) / White & Grey & Yellow belt / -42 & -46 kg
  • Source belt category: yellow

2 matches in the rating period