TopBJJ Index Youth

TopBJJ Index

Search TopBJJ Index
Language selector
Menu
NL

Jazzlynn Slingerland

Carlson Gracie Den Haag

W–L
6–3
Won and lost rating-eligible matches in the past 12 months.
Gi
1,264
Rating based on Gi matches in the past 12 months.
No-Gi
1,302
Rating based on No-Gi matches in the past 12 months.
Current form
6–3
Results from the ten most recent rating-eligible matches.
Opponents
5
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
3
Silver
0
Bronze
1
Total medals
4
Events with results
2

Full career record

Wins
6
Losses
3
Matches
9
Win rate
66.7%

Ways of winning

Submission
6
Points
0
Decision
0
Disqualification
0

Personal records

Longest winning streak
4
Longest submission streak
4
Longest gold streak
1

Recent recorded placements

  1. Cauliflower Cup Circuit 2

    NL Event record 4–0

    • Girls Gi / White / Junior II (11yrs) / -36,30 kg
    • Girls No-Gi / White / Junior II (11yrs) / -38,90 kg

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
4
Unique opponents
5
Distinct events
2

Ways of winning

  • Submission 6 100%
  • Points 0 0%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1264
Record
2–2
Win rate
50%
Submission share
100%

No-Gi

Rating
1302
Record
4–1
Win rate
80%
Submission share
100%

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
1,359
Change over 90 days
-
Highest rating in 12 months
1,358
Performance versus expectation
-
Schedule strength
-
Average opponent rating
1,317
Weighted win rate
-
Expected win rate
-
Repeat-opponent share
44%
Effective evidence
5.9
Confidence
75/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 4–2 4–2 across 6 rematches against 2 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #84 Jill Broodkoorn · Cauliflower Cup Circuit 2 Sub 02:30 0–0
  2. #881 You An Sun · Cauliflower Cup Circuit 2 Sub 04:29 7–0

Full career

  1. #84 Jill Broodkoorn · Cauliflower Cup Circuit 2 Sub 02:30 0–0
  2. #881 You An Sun · Cauliflower Cup Circuit 2 Sub 04:29 7–0

Rivals

Opponent Head-to-head record Matches
Amelia Zabicka 2–2 4
Jaimylinn Smits 2–0 2

Around this athlete

Athlete Rank Rating
Marius GIANGRASSO #592 1,359
Jazzlynn Slingerland #593 1,359
Mellina Ben Aleya #594 1,359

Scheduled

Recent tournaments

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 1,359

Rating-period composition

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

July 2026 No new matches Change +1 Rating 1,359

Rating-period composition

Rating matches
9 0
Record
6–3 Previous month 6–3
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 4 new matches Change +113 Rating 1,358

Rating-period composition

Rating matches
9 +4
Record
6–3 Previous month 2–3
Opponents
5 +3
Events
2 +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.
Win
June 6, 2026 Jill Broodkoorn
Cauliflower Cup Circuit 2 Girls Gi / White / Junior II (11yrs) / -36,30 kg
Method Submission 02:30 0–0
Marginal influence +24
Win
June 6, 2026 You An Sun
Cauliflower Cup Circuit 2 Girls Gi / White / Junior II (11yrs) / -36,30 kg
Method Submission 04:29 7–0
Marginal influence +18
Win
June 6, 2026 Jaimylinn Smits
Cauliflower Cup Circuit 2 Girls No-Gi / White / Junior II (11yrs) / -38,90 kg
Method Submission 04:13 18–0
Marginal influence +13
Win
June 6, 2026 Jaimylinn Smits
Cauliflower Cup Circuit 2 Girls No-Gi / White / Junior II (11yrs) / -38,90 kg
Method Submission 04:10 19–0
Marginal influence +13
May 2026 5 new matches Change Starting point Rating 1,245

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 3, 2026 Amelia Zabicka
Grappling Industries AMSTERDAM Gi Kids / 10 - 11 years / Grey / -85 lbs
Method Decision 03:00 0–0
Marginal influence -22
Loss
May 3, 2026 Ravi De Weerd
Grappling Industries AMSTERDAM Gi Kids / 10 - 11 years / Grey / -85 lbs
Method Submission 01:12 0–9
Marginal influence -27
Win
May 3, 2026 Amelia Zabicka
Grappling Industries AMSTERDAM No Gi Kids / 10 - 11 years / Intermediate (Grey) / -85 lbs
Method Submission 00:36 2–0
Marginal influence +10
Win
May 3, 2026 Amelia Zabicka
Grappling Industries AMSTERDAM No Gi Kids / 10 - 11 years / Intermediate (Grey) / -85 lbs
Method Submission 01:34 2–0
Marginal influence +10
Loss
May 3, 2026 Amelia Zabicka
Grappling Industries AMSTERDAM No Gi Kids / 10 - 11 years / Intermediate (Grey) / -85 lbs
Method Submission 00:14 0–0
Marginal influence -10
Relevant matches
5.9
Official ranking percentile
Top 40%
Performance
-

5.9 weighted matches against 5 different opponents across 2 events

Weighted win rate
-
Expected win rate
-
Average opponent rating
1,317
Repeated-opponent share
44.4%
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 2 event votes Selected outcome

Registrations and outcomes

Cauliflower Cup Circuit 2
U12 · Counts
Girls No-Gi / White / Junior II (11yrs) / -38,90 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Girls Gi / White / Junior II (11yrs) / -36,30 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Grappling Industries AMSTERDAM
U12 · Counts
No Gi Kids / 10 - 11 years / Intermediate (Grey) / -85 lbs
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Gi Kids / 10 - 11 years / Grey / -85 lbs
  • Competition age 11
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 39 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

  • ≤ 39 kg 1 competition event Selected outcome

Registrations and outcomes

Cauliflower Cup Circuit 2
≤ 39 kg · Does not count
Girls No-Gi / White / Junior II (11yrs) / -38,90 kg
  • Registered weight class: -38,90 kg
  • Source competition limit: -38,90 kg

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

Cauliflower Cup Circuit 2
≤ 36 kg · Does not count
Girls Gi / White / Junior II (11yrs) / -36,30 kg
  • Registered weight class: -36,30 kg
  • Source competition limit: -36,30 kg

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

Grappling Industries AMSTERDAM
≤ 39 kg · Counts as a competition event
No Gi Kids / 10 - 11 years / Intermediate (Grey) / -85 lbs
  • Registered weight class: -85 lbs
  • Source competition limit: -85 lbs

3 matches in the rating period

Grappling Industries AMSTERDAM
≤ 39 kg · Counts as a competition event
Gi Kids / 10 - 11 years / Grey / -85 lbs
  • Registered weight class: -85 lbs
  • Source competition limit: -85 lbs

2 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 5 matches in the rating period Selected outcome
  • white 4 matches in the rating period

Registrations and outcomes

Cauliflower Cup Circuit 2
white · Counts as a match
Girls Gi / White / Junior II (11yrs) / -36,30 kg
  • Source belt category: white

2 matches in the rating period

Cauliflower Cup Circuit 2
white · Counts as a match
Girls No-Gi / White / Junior II (11yrs) / -38,90 kg
  • Source belt category: white

2 matches in the rating period

Grappling Industries AMSTERDAM
grey · Counts as a match
Gi Kids / 10 - 11 years / Grey / -85 lbs
  • Source belt category: grey

2 matches in the rating period

Grappling Industries AMSTERDAM
grey · Counts as a match
No Gi Kids / 10 - 11 years / Intermediate (Grey) / -85 lbs
  • Source belt category: grey

3 matches in the rating period