Sailor · 2022–2026

Collin Siewers

koninklijke watersport vereeniging loosdrecht Optimist RS Feva Optimist Combi

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Events: 10
Win rate: 0%
Podium rate: 10%
Typically beats: 43%
Best class ranking: #72

Nemesis: Charlotte de Groot
Rival: Fiene van Veen
Best day: 2 Jun 2024
Signature result: 11th of 40

Partnerships · 3 sailors

Tijn Goote · Tijn GOOTE · RS Feva 2events 0 wins together · 1 podiums · 2 events · 0 of 9 races won Beat 63% of the fleet together · best 3rd · May 2025 – Jul 2025
Jeppe Noordanus · Jeppe NOORDANUS · RS Feva 1events 0 wins together · 0 podiums · 1 events · 0 of 15 races won Beat 67% of the fleet together · best 8th · May 2026 – May 2026
Toon Sonnenberg · Toon SONNENBERG · RS Feva 1events 0 wins together · 0 podiums · 1 events · 0 of 6 races won Beat 75% of the fleet together · best 4th · Apr 2026 – Apr 2026

Lift shows how much better this sailor finishes with that partner aboard.

Rating history

— Helm rating, all classes · - - Crew rating, all classes

Event history · 10

Date	Event	Boat	Class	Role	Finish
14 May 2026	Dutch Youth Regatta 2026	Jeppe NOORDANUS	RS Feva	Crew	8th / 22
18 Apr 2026	United4 Medemblik I	Toon SONNENBERG	RS Feva	Crew	4th / 13
12 Jul 2025	Combi Muiden (CA)	Tijn GOOTE	RS Feva	Crew	3rd / 9
11 May 2025	Combi Loosdrecht (CA)	Tijn GOOTE	RS Feva	Crew	6th / 11
5 Oct 2024	Nationale Slotcombi Braassem	Black Pearl	Optimist Combi	Skipper	11th / 40
1 Jun 2024	Combi Kaag (CA)	Black Pearl	Optimist	Skipper	10th / 35
18 May 2024	Combi Haarlem (CA)	Black Pearl	Optimist	Skipper	28th / 46
8 Oct 2023	Nationale Slotcombi Braassem	Black Pearl	Optimist	Skipper	46th / 52
1 Jul 2023	Combi Muiden	Black Pearl	Optimist	Skipper	31st / 36
2 Jul 2022	Combi Muiden	Black Pearl	Optimist	Skipper	30th / 37

Ratings

Class	Rating	Rank	Impact
All classes Helm	-26 provisional	#56766 band 34998–73310	—
Optimist Helm	-73 provisional	#10414 band 6317–12914	—
All classes Crew	146 provisional	#20922 band 11007–36141	—
RS Feva Crew	147 provisional	#72 band 27–143	—

1 more class, not yet ranked

Optimist Combi · Helm · 6 races, 1 event · rating 37

Rank among sailors with a substantial record, all time. In brackets, the ranks this rating cannot be told apart from. Impact is the points of fleet beaten that this sailor adds.

Helm and crew

As helm	6 events	0 wins	beats 39%
As crew	4 events	0 wins	beats 67%

How they race

Closer	−8 pts	last race of an event vs. the rest
Comeback	−11 pts	the race after a bottom-half finish
Consistency	49%	100% = the same result every event
Big fleets	39%	of the fleet beaten

Head to head

Helm	Races	W–L
Charlotte de Groot	38	1–37
Fiene van Veen	29	13–16
Milou Modderman	28	8–19
Maksymilian Olejniczak	26	3–23
Tein Langelaar	25	15–9
Philippine Nierstrasz	25	12–13
Valerio Palacios Benzi	25	2–23
Art van der Werff	25	20–3
Valentijn Destellirer	25	11–13
Jeppe Noordanus	23	4–19
Anna de Jong Schouwenburg	22	14–8
Willem van Schipstal	21	15–6

Most-beaten opponent: Eva Anink (20–1).

Seasons

Year	Events	Beat
2026	2	71%
2025	2	63%
2024	3	63%
2023	2	13%
2022	1	19%

Boats

Black Pearl · Optimist Combi, Optimist · 6 events · 2022–2024
Tijn GOOTE · RS Feva · 2 events · 2025
Jeppe NOORDANUS · RS Feva · 1 events · 2026
Toon SONNENBERG · RS Feva · 1 events · 2026

Where they race

Unknown · 10 events

Is this you?

Claim it to merge duplicates and remove results that aren’t yours. Changes apply at the nightly rebuild.

Helm rating across all classes: -26, #56,766.Crew rating across all classes: 146, #20,922. Compiled from public results; not an official ranking.