TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
NL

Martijn Schonk

Ruthless Fight Company

W–L
3–2
Won and lost rating-eligible matches in the past 12 months.
Gi
1,228
Rating based on Gi matches in the past 12 months.
No-Gi
1,269
Rating based on No-Gi matches in the past 12 months.
Current form
3–2
Results from the ten most recent rating-eligible matches.
Opponents
4
Unique opponents faced in rating-eligible matches in the past 12 months.

Scheduled

Tournament history

Events

1
Events
Date Event Result Format Division
GrappleCity: Rotterdam Winter Open the Netherlands · Gi · 14–15 yo · white · ≤60 kg ; No-Gi · 14–15 yo · white · ≤60 kg 3–2 W–L: Win / Loss GiNo-Gi
  • Place #9
  • Teens Gi / White / 14-15 years / -60kg / Boy

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 1,335

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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.

July 2026 No new matches Change 0 Rating 1,335

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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.

June 2026 No new matches Change 0 Rating 1,335

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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.

May 2026 No new matches Change +5 Rating 1,335

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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.

April 2026 No new matches Change -1 Rating 1,330

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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.

March 2026 No new matches Change 0 Rating 1,331

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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.

February 2026 No new matches Change +8 Rating 1,331

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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 No new matches Change +1 Rating 1,323

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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 -1 Rating 1,322

Rating-period composition

Rating matches
5 0
Record
3–2 Previous month 3–2
Opponents
4 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 5 new matches Change Starting point Rating 1,323

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
November 9, 2025 Erblin Ibrahimi
GrappleCity: Rotterdam Winter Open Teens NoGi / White / 14-15 years / -60kg / Boy
Method Submission 02:31 9–0
Marginal influence +22
Win
November 9, 2025 Luuk Van Der Heiden
GrappleCity: Rotterdam Winter Open Teens NoGi / White / 14-15 years / -60kg / Boy
Method Submission 00:35 6–0
Marginal influence +17
Loss
November 9, 2025 Muhammed Ali Yilmaz
GrappleCity: Rotterdam Winter Open Teens NoGi / White / 14-15 years / -60kg / Boy
Method Submission 00:21 0–2
Marginal influence -13
Loss
November 9, 2025 Muhammed Ali Yilmaz
GrappleCity: Rotterdam Winter Open Teens Gi / White / 14-15 years / -60kg / Boy
Method Points 04:00 10–11
Marginal influence -11
Win
November 9, 2025 Ilaij Da Silva
GrappleCity: Rotterdam Winter Open Teens Gi / White / 14-15 years / -60kg / Boy
Method Submission 01:04 13–0
Marginal influence +11
Relevant matches
4
Official ranking percentile
-
Performance
-

4 weighted matches against 4 different opponents across 1 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,403
Repeated-opponent share
20.0%
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 2 event votes Selected outcome

Registrations and outcomes

Grappling Industries AMSTERDAM
U16 · Counts
Gi Kids / 14 - 15 years (Male) / Grey / -145 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16
No Gi Kids / 14 - 15 years (Male) / Intermediate (Grey) / -145 lbs
  • Competition age 15
  • Registered age: u16
  • Source category: u16
GrappleCity: Rotterdam Spring Open
U16 · Counts
Teens Gi / Grey / 14-15 years / -65kg / Boy
  • Competition age 15
  • Registered age: u16
  • Source category: u16
Teens NoGi / Grey / 14-15 years / -65kg / Boy
  • Competition age 15
  • Registered age: u16
  • Source category: u16
The Future League 8 – Gi & No-Gi
Does not count
Kids Gi / 13 - 15 years boys / White / -60 kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16
Kids Grappling (NoGi) / 13 - 15 years boys / White / -60 kg
  • Competition age 14
  • Registered age: u16
  • Source category: u16
GrappleCity: Rotterdam Winter Open
Does not count
Teens NoGi / White / 14-15 years / -60kg / Boy
  • Competition age 14
  • Registered age: u16
  • Source category: u16
Teens Gi / White / 14-15 years / -60kg / Boy
  • Competition age 14
  • Registered age: u16
  • Source category: u16

Classification evidence

Why ≤ 60 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

  • ≤ 60 kg 1 competition event Selected outcome

Registrations and outcomes

Grappling Industries AMSTERDAM
Does not count
Gi Kids / 14 - 15 years (Male) / Grey / -145 lbs
  • Registered weight class: -145 lbs
  • Source competition limit: -145 lbs

No matches in the rating period · no valid weight evidence

Grappling Industries AMSTERDAM
Does not count
No Gi Kids / 14 - 15 years (Male) / Intermediate (Grey) / -145 lbs
  • Registered weight class: -145 lbs
  • Source competition limit: -145 lbs

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Spring Open
Does not count
Teens Gi / Grey / 14-15 years / -65kg / Boy
  • Registered weight class: -65kg
  • Source competition limit: -65kg

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Spring Open
Does not count
Teens NoGi / Grey / 14-15 years / -65kg / Boy
  • Registered weight class: -65kg
  • Source competition limit: -65kg

No matches in the rating period · no valid weight evidence

The Future League 8 – Gi & No-Gi
Does not count
Kids Gi / 13 - 15 years boys / White / -60 kg
  • Registered weight class: -60 kg
  • Source competition limit: -60 kg

No matches in the rating period · no valid weight evidence

The Future League 8 – Gi & No-Gi
Does not count
Kids Grappling (NoGi) / 13 - 15 years boys / White / -60 kg
  • Registered weight class: -60 kg
  • Source competition limit: -60 kg

No matches in the rating period · no valid weight evidence

GrappleCity: Rotterdam Winter Open
≤ 60 kg · Counts as a competition event
Teens NoGi / White / 14-15 years / -60kg / Boy
  • Registered weight class: -60kg
  • Source competition limit: -60kg

3 matches in the rating period

GrappleCity: Rotterdam Winter Open
≤ 60 kg · Counts as a competition event
Teens Gi / White / 14-15 years / -60kg / Boy
  • Registered weight class: -60kg
  • Source competition limit: -60kg

2 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 5 matches in the rating period Selected outcome

Registrations and outcomes

GrappleCity: Rotterdam Winter Open
white · Counts as a match
Teens NoGi / White / 14-15 years / -60kg / Boy
  • Source belt category: white

3 matches in the rating period

GrappleCity: Rotterdam Winter Open
white · Counts as a match
Teens Gi / White / 14-15 years / -60kg / Boy
  • Source belt category: white

2 matches in the rating period