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Jaap Koster

Steelbound● · Netherlands
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Weapons & Rank/ratings
Mixed & Men's Singlestick Regional
Current
827 #471
Peak
926 December 2024
Record
1W · 10L
Last
February 2026

Scout analysis

Singlestick

1W · 10L (9%)
Form
Cooling
Recent 0% vs older 20%
▾
Record: 1W · 10L (9%)
Recent half (5 fights): 0%
Older half (5 fights): 20%
Delta: -20%
Current streak: 8 Losses
Based on 11 recorded singlestick fights.
Schedule
Comfort bracket
-1.9 vs expectation
▾
Over/under vs expectation: -1.9 (0 actual / 1.9 expected, n=5)
Expectation stats compare each result with the win chance implied by both fighters' ratings in that division.
Style
Building signal
Needs more exchange data
▾
Style signal needs per-exchange match data. Once enough of this fighter's exchanges are recorded, this card will sharpen into scoring tempo, doubles rate, comeback wins, early vs late scoring, and more.
Stage
Pool data only
Pool 9%
▾
Pool stage: 1W · 10L (9%)
Elimination: needs 3+ coded fights.
Stage tagging depends on upstream division labels - some fights may be uncategorised.
Peak
98 pts off peak
Currently below peak
▾
Current rating: 827
Peak rating: 926 (December 2024)
Gap to peak: -98
Peak is relative to an isolated regional scene - see the "How to read this profile" note below.
Reach
2 events · nl · 1.2 yrs active
Single-weapon
▾
Tournaments: 2
Countries fought in: 1 (nl)
Months active: 14
Fights / year: 9.4
Rated weapons: 1

Clubmates · Steelbound● (20)

Events & fights (2)

HVN Singlestick Charity Tournament 2026●
February 2026 · nl
7 fights ▾
Rating outcome
  • Mixed & Men's Singlestick Rank 443 ▼55 · 830.0
LOSS
Eline Rietema● · De Zwaardkring● Singlestick · Pool Pools
871 55%
LOSS
Luc Wehbe● · Sint Michielsgilde● Singlestick · Pool Pools
885 57%
LOSS
Kari Derks● · Houw en Hoede● Singlestick · Pool Pools
LOSS
Mykhaylo Skorobogatov● · Sharukhan● Singlestick · Pool Pools
1716 20%
LOSS
Tim Beerens● · Historisch Vrijvechten Nederland● Singlestick · Seeding Pools
1513 29%
LOSS
Bart Jongsma● · Historisch Vrijvechten Nederland● Singlestick · Seeding Pools
1579 26%
LOSS
Fien Willighagen● · De Zwaardkring● Singlestick · Seeding Pools
HVN Charity Singlestick Tournament 2024●
December 2024 · nl
4 fights ▾
Rating outcome
  • Mixed & Men's Singlestick Rank 343 · 926.1
LOSS
Pieter van der Werff● · Historisch Vrijvechten Nederland● Singlestick · Pool Set 1 Score 1-9 Review →
LOSS
Julien Wattez● · Les Sept Epées● Singlestick · Pool Set 1
1464
WIN
Evi Shamoun● · De Zwaardkring● Singlestick · Pool Set 1
658
LOSS
Andreas Uten● · De Zwaardkring● Singlestick · Pool Set 1 Score 0-8 Review →
1403
How to read this profile

Rating is Glicko-2: the number shown is score - 2*RD (97.5% confidence lower bound), not raw skill. Inactive fighters "drift down" as RD grows - not because they got worse.

Hemaratings ratings don't factor in match scores, exchange counts, or doubles. Scout's score-margin and style metrics describe HOW a fighter fights, not the rating tier their results earned.

Hemaratings recomputes in batches days-to-weeks after events. A fighter's most recent tournament may not yet be reflected.

Regional At least one of this fighter's ratings is "island" - their rank/percentile is relative to an isolated regional scene, not the global population. Cross-scene rating comparisons are unreliable.