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Isabella Kuijer

Jiu Jitsu Factory

U18 -70 kg
W–L
-
Won and lost rating-eligible matches in the past 12 months.
Gi
-
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
-
Results from the ten most recent rating-eligible matches.
Opponents
-
Unique opponents faced in rating-eligible matches in the past 12 months.

Tournament history

Events

11
Events
Date Event Result Format Division
Nijmegen Open BJJ 2025 the Netherlands · Gi · 13–15 yo · orange · ≤70 kg 1–2 W–L: Win / Loss Gi
  • Kids / Orange / 13 - 15 years girls / -70 kg
'The Future League 4' by VERSUS the Netherlands · Gi · 13–14 yo · yellow 2–0 W–L: Win / Loss Gi
  • 13 - 14 years girls / Yellow+ / -70 & 70+
LET`S ROLL UTRECHT III the Netherlands · Gi · 14–16 yo · ≤65 kg 0–1 W–L: Win / Loss Gi
  • Teens Mixed Gi / Advanced / 14-16 years / -70 kg
Lion Cub Jiu Jitsu Competition 3 the Netherlands · Gi · 13–15 yo · white/yellow/green · ≤75 kg 4–0 W–L: Win / Loss Gi
  • Girls / 13 - 15 year girls / White & Yellow & Green / -70 & -75 & +75 kg
Nijmegen Open BJJ 2024 the Netherlands · Gi · 13–15 yo · white/grey/yellow · ≤75 kg 1–2 W–L: Win / Loss Gi
  • Kids / 13 - 15 years girls / White & Grey & Yellow / +65 kg
Lion Cub Jiu Jitsu Competition 2 the Netherlands · Gi · 13–15 yo · white/grey/yellow · ≤75 kg 2–1 W–L: Win / Loss Gi
  • Girls / 13 - 15 year girls / White, Grey & Yellow / +65 kg
Lion Cub Jiu Jitsu Competition 1 the Netherlands · Gi · 13–15 yo · white/grey/yellow · ≤60/65 kg 2–2 W–L: Win / Loss Gi
  • Girls / 13 - 15 year girls / White & Grey & Yellow / -60 & -65 kg
KING of the BEACH 2023 the Netherlands · Gi · 11–13 yo · grey/yellow · ≤60/65 kg 2–0 W–L: Win / Loss Gi
  • Sunday Kids Gi / 11 - 13 years girls / Grey & Yellow / -60 & -65 kg
Nijmegen Open BJJ 2023 the Netherlands · Gi · 13–15 yo · yellow/orange/green · ≤60/65 kg 1–1 W–L: Win / Loss Gi
  • Kids / 13 - 15 years girls / Yellow & Orange & Green / -60 & -65 kg
International Veluwe Open Jiu Jitsu Championship 2023 GI & NO-GI the Netherlands · Gi · 10–12 yo · grey · ≤65/70 kg 3–0 W–L: Win / Loss Gi
  • Kids Gi / 10 - 12 years kids / Grey / -65 & -70 kg
Nijmegen Open BJJ 2022 the Netherlands · Gi · 10–12 yo · white/grey/yellow · ≤60/65 kg 3–1 W–L: Win / Loss Gi
  • Kids / 10 - 12 years kids / White & Grey & Yellow / -60 & -65 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.

April 2026 No new matches Change 0 Rating 1,174

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
1 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 -1 Rating 1,174

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
1 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 0 Rating 1,175

Rating-period composition

Rating matches
3 0
Record
1–2 Previous month 1–2
Opponents
1 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 · 2 left period Change -96 Rating 1,175

Rating-period composition

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

December 2025 No new matches Change 0 Rating 1,271

Rating-period composition

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

November 2025 No new matches · 1 left period Change +40 Rating 1,271

Rating-period composition

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

1 older matches left the 12-month period: 0 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

October 2025 No new matches · 4 left period Change -144 Rating 1,231

Rating-period composition

Rating matches
6 -4
Record
3–3 Previous month 7–3
Opponents
3 -4
Events
3 -1

4 older matches left the 12-month period: 4 won and 0 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

September 2025 No new matches Change +2 Rating 1,375

Rating-period composition

Rating matches
10 0
Record
7–3 Previous month 7–3
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
-
Official ranking percentile
-
Performance
-

- weighted matches against - different opponents across 0 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
-
Repeated-opponent share
-
Network connectivity
-