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Sybe Boomsma

Bjj Delft

W–L
3–5
Won and lost rating-eligible matches in the past 12 months.
Gi
1,229
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
3–5
Results from the ten most recent rating-eligible matches.
Opponents
7
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

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

Full career record

Wins
3
Losses
5
Matches
8
Win rate
37.5%

Ways of winning

Submission
1
Points
2
Decision
0
Disqualification
0

Personal records

Longest winning streak
3
Longest submission streak
1

Recent recorded placements

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
0
Unique opponents
7
Distinct events
3

Ways of winning

  • Submission 1 33%
  • Points 2 67%
  • Decision 0 0%
  • Other recorded result 0 0%

Gi versus No-Gi

Gi

Rating
1229
Record
3–5
Win rate
38%
Submission share
33%

No-Gi

Rating
-
Record
-
Win rate
-
Submission share
-

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
1,229
Change over 90 days
-
Highest rating in 12 months
1,268
Performance versus expectation
-9.0 pp
Schedule strength
Top 79%
Average opponent rating
1,278
Weighted win rate
37%
Expected win rate
46%
Repeat-opponent share
13%
Effective evidence
5.7
Confidence
75/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 0–2 0–2 across 2 rematches against 1 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #547 Loris De Ceulaer · International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Pts 2–2
  2. #829 Zahra Hiba · International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Pts 4–0
  3. #1387 Nouh El Badey · International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Sub 02:18 6–0

Full career

  1. #547 Loris De Ceulaer · International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Pts 2–2
  2. #829 Zahra Hiba · International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Pts 4–0
  3. #1387 Nouh El Badey · International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Sub 02:18 6–0

Rivals

Opponent Head-to-head record Matches
Jenoah Plet 0–2 2

Around this athlete

Athlete Rank Rating
Zaïn Quanare #1196 1,229
Sybe Boomsma #1197 1,229
Safiyah Zoakman #1198 1,229

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 1,229

Rating-period composition

Rating matches
8 0
Record
3–5 Previous month 3–5
Opponents
7 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.

July 2026 No new matches Change 0 Rating 1,229

Rating-period composition

Rating matches
8 0
Record
3–5 Previous month 3–5
Opponents
7 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.

June 2026 No new matches Change -4 Rating 1,229

Rating-period composition

Rating matches
8 0
Record
3–5 Previous month 3–5
Opponents
7 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.

May 2026 2 new matches Change -35 Rating 1,233

Rating-period composition

Rating matches
8 +2
Record
3–5 Previous month 3–3
Opponents
7 +2
Events
3 +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
May 30, 2026 Rayan Lichtveld
Nijmegen Open BJJ 2026 Kids / 13 - 15 years boys / White / -42 & -46 kg
Method Points 04:00 0–2
Marginal influence -30
Loss
May 30, 2026 Neo Rosenstand
Nijmegen Open BJJ 2026 Kids / 13 - 15 years boys / White / -42 & -46 kg
Method Points 04:00 2–4
Marginal influence -24
April 2026 No new matches Change 0 Rating 1,268

Rating-period composition

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

March 2026 6 new matches Change Starting point Rating 1,268

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
March 28, 2026 Ilajah Swaak
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids GI / 10 - 12 years boys / White / -42 & -46 kg
Method Submission 02:24 0–9
Marginal influence -20
Win
March 28, 2026 Nouh El Badey
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids GI / 10 - 12 years boys / White / -42 & -46 kg
Method Submission 02:18 6–0
Marginal influence +20
Win
March 28, 2026 Zahra Hiba
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids GI / 10 - 12 years boys / White / -42 & -46 kg
Method Points 03:00 4–0
Marginal influence +30
Win
March 28, 2026 Loris De Ceulaer
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI Kids GI / 10 - 12 years boys / White / -42 & -46 kg
Method Points 03:00 2–2
Marginal influence +35
Loss
March 15, 2026 Jenoah Plet
Cauliflower Cup Circuit Boys Gi / White / Teen I (13yrs) / -44,50 kg
Method Submission 02:10 0–2
Marginal influence -16
Loss
March 15, 2026 Jenoah Plet
Cauliflower Cup Circuit Boys Gi / White / Teen I (13yrs) / -44,50 kg
Method Submission 01:33 0–0
Marginal influence -16
Relevant matches
5.7
Official ranking percentile
Top 81%
Performance
9.0 pp below expectation

5.7 weighted matches against 7 different opponents across 3 events

Weighted win rate
37.2%
Expected win rate
46.2%
Average opponent rating
1,278
Repeated-opponent share
12.5%
Network connectivity
87.6%

Classification evidence

Why U14?

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

  • U14 3 event votes Selected outcome

Registrations and outcomes

Nijmegen Open BJJ 2026
U14 · Counts
Kids / 13 - 15 years boys / White / -42 & -46 kg
  • Competition age 13
  • Registered age: u16
  • Source category: u16
International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI
U14 · Counts
Kids GI / 10 - 12 years boys / White / -42 & -46 kg
  • Competition age 13
  • Registered age: u12
  • Source category: u12
Cauliflower Cup Circuit
U14 · Counts
Boys Gi / White / Teen I (13yrs) / -44,50 kg
  • Competition age 13
  • Registered age: u14
  • Source category: u14

Classification evidence

Why ≤ 45 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

  • ≤ 45 kg 1 competition event Selected outcome
  • ≤ 46 kg 2 competition events

Registrations and outcomes

Nijmegen Open BJJ 2026
≤ 46 kg · Counts as a competition event
Kids / 13 - 15 years boys / White / -42 & -46 kg
  • Registered weight class: -46 kg
  • Source competition limit: -46 kg

2 matches in the rating period

International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI
≤ 46 kg · Counts as a competition event
Kids GI / 10 - 12 years boys / White / -42 & -46 kg
  • Registered weight class: -46 kg
  • Source competition limit: -46 kg

4 matches in the rating period

Cauliflower Cup Circuit
≤ 45 kg · Counts as a competition event
Boys Gi / White / Teen I (13yrs) / -44,50 kg
  • Registered weight class: -44,50 kg
  • Source competition limit: -44,50 kg

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 8 matches in the rating period Selected outcome

Registrations and outcomes

Nijmegen Open BJJ 2026
white · Counts as a match
Kids / 13 - 15 years boys / White / -42 & -46 kg
  • Source belt category: white

2 matches in the rating period

International Veluwe Open Jiu Jitsu Championship 2026 GI & NO-GI
white · Counts as a match
Kids GI / 10 - 12 years boys / White / -42 & -46 kg
  • Source belt category: white

4 matches in the rating period

Cauliflower Cup Circuit
white · Counts as a match
Boys Gi / White / Teen I (13yrs) / -44,50 kg
  • Source belt category: white

2 matches in the rating period