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Sailor · 2023–2026

Oliver Kosmoski

south shore yacht club Optimist420Handicap

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Events
15

109 races · 20 race wins

Win rate
7%

7% win rate · 1 of 15

Podium rate
47%

7 top-three finishes

Typically beats
75%

of boats faced (90%: 70%–80%, 242 boats)

Best class ranking
#1781

Helm in Optimist · rating 242

Longest win streak
9

race wins in a row

Nemesis
Alexander Prendergast

0–15 head to head in 15 races

Rival
Frankie Pichette

13–19 in 32 races

Best day
8 Jul 2025

1-1-1-1-1-1-1 · 2025 Kaszube Cup · about 1 in 55,015 by chance

Signature result
1st of 12

2025 Kaszube Cup · Optimist · 8 Jul 2025

Partnerships · 7 sailors

  • Rueben Pike · Oliver Kosmoski · 420, Handicap 2events 0 wins together · 1 podiums · 2 events · 4 of 14 races won Beat 83% of the fleet together · best 2nd · Jun 2026 – Jul 2026
  • Jon Douglas · Mighty B · PHRF handicap 1events 0 wins together · 1 podiums · 1 events · 0 of 1 race won Beat 88% of the fleet together · best 2nd · Jun 2023 – Jun 2023
  • Brielle Douglas · Mighty B · PHRF handicap 1events 0 wins together · 1 podiums · 1 events · 0 of 1 race won Beat 88% of the fleet together · best 2nd · Jun 2023 – Jun 2023
  • Kevin Urbani · Mighty B · PHRF handicap 1events 0 wins together · 1 podiums · 1 events · 0 of 1 race won Beat 88% of the fleet together · best 2nd · Jun 2023 – Jun 2023
  • Jack Kosmoski · Mighty B · PHRF handicap 1events 0 wins together · 1 podiums · 1 events · 0 of 1 race won Beat 88% of the fleet together · best 2nd · Jun 2023 – Jun 2023
  • Leo Chojnacki · Mighty B · PHRF handicap 1events 0 wins together · 1 podiums · 1 events · 0 of 1 race won Beat 88% of the fleet together · best 2nd · Jun 2023 – Jun 2023
  • Dan Chojnacki · Mighty B · PHRF handicap 1events 0 wins together · 1 podiums · 1 events · 0 of 1 race won Beat 88% of the fleet together · best 2nd · Jun 2023 – Jun 2023

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

Rating history

0157314202420252026Helm rating, all classes

Event history · 15

DateEventBoatClassRoleFinish
6 Jul 20262026 Kaszube Cup & US Sailing Junior Olympic Sailing FestivalOliver Kosmoski420Skipper2nd / 6
30 Jun 2026Chicago Junior Race Week 2026Oliver KosmoskiHandicapSkipper4th / 22
31 Jul 20252025 Andrea T RegattaOliver KosmoskiOptimistSkipper4th / 13
15 Jul 20252025 Sheridan Shore Summer SplashOliver KosmoskiOptimistSkipper5th / 9
12 Jul 2025Ephraim Yacht Club Opti Regatta 2025169OptimistSkipper2nd / 9
8 Jul 20252025 Kaszube CupOliver KosmoskiOptimistSkipper1st / 12
28 Jun 2025Ephraim Yacht Club 420 Regatta 20250307420Skipper4th / 11
27 Sep 20242024 Optimist Midwest ChampionshipOliver KosmoskiOptimistSkipper18th / 46
4 Aug 2024Skyline Regatta 2024Oliver KosmoskiOptimist R/W/BSkipper4th / 15
28 Jul 2024Sheridan Shore Summer SplashOliver KosmoskiOptimistSkipper3rd / 12
13 Jul 2024Ephraim Yacht Club Opti Regatta 202422092OptimistSkipper3rd / 13
23 Jun 2024REGATTA 2024 - LBSS Opti RegattaOliver KosmoskiHandicapSkipper13th / 56
30 Jul 2023Skyline Regatta 2023Oliver KosmoskiOptimist R/W/BSkipper2nd / 8
8 Jul 2023Ephraim Yacht Club Opti Regatta 2023noneOptimistSkipper8th / 16
30 Jun 2023Queen's Cup RaceMighty BPHRF handicapOther2nd / 9

Helm rating across all classes: 314 (±158), #9,047.Crew rating across all classes: 19 (±249). Compiled from public results; not an official ranking.