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Sailor · 2010–2026

Dan Groskopf

pewaukee A ScowE Scow420

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Events
29

174 races · 22 race wins

Win rate
10%

10% win rate · 3 of 29

Podium rate
14%

4 top-three finishes

Typically beats
48%

of boats faced (range 46%–51%, 894 boats)

Best class ranking
#21

Crew in A Scow · rating 264

Longest win streak
4

race wins in a row

Most successful partnership
Zac Aasen

3 wins · 4 podiums in 14 events together · 21% win rate

Best trio
Nicholas Clemence & Zac Aasen

3 wins · 4 podiums in 13 events, all three aboard

Biggest lift
Augie Dale

+27 points of fleet beaten when sailing together

Longest-running crew
Tom Groskopf

Jun 2021 – Aug 2026 · 15 events

Nemesis
Vincent Porter

10–48 head to head in 58 races

Rival
Todd Haines

45–41 in 86 races

Best day
8 Jan 2026

1-2-3-1-1-7-4-2-1-1-2-2-1-1-2-1-3 · 2026 A Fleet Championship Series

Signature result
14th of 126

2023 E Scow National Championship · E Scow · 7 Sep 2023

Partnerships · 33 sailors

Most successful partnership: Zac Aasen — 3 wins · 4 podiums in 14 events together · 21% win rate
  • Tom Groskopf · Dying A, Haulin' A, Haulin'A, Haulin’ A · A Scow 15events 3 wins together · 4 podiums · 20% win rate · 21 of 99 races won Beat 56% of the fleet together(+17 vs. without) · best 1st · Jun 2021 – Aug 2026
  • David Byczek · Dying A, Haulin' A, Haulin'A, Haulin’ A · A Scow 15events 3 wins together · 4 podiums · 20% win rate · 21 of 99 races won Beat 56% of the fleet together(+17 vs. without) · best 1st · Jun 2021 – Aug 2026
  • Nicholas Clemence · Dying A, Haulin' A, Haulin'A, Haulin’ A · A Scow, E Scow 15events 3 wins together · 4 podiums · 20% win rate · 21 of 99 races won Beat 54% of the fleet together(+11 vs. without) · best 1st · Jun 2021 – Aug 2026
  • Zac Aasen · Dying A, Haulin' A, Haulin'A, Haulin’ A · A Scow 14events 3 wins together · 4 podiums · 21% win rate · 21 of 95 races won Beat 59% of the fleet together(+20 vs. without) · best 1st · Jun 2022 – Aug 2026
  • Max Schieble · Dying A, Haulin' A, Haulin'A · A Scow 13events 2 wins together · 3 podiums · 15% win rate · 13 of 80 races won Beat 55% of the fleet together(+13 vs. without) · best 1st · Jun 2021 – Jun 2026
  • Brett Hutchinson · Haulin' A, Haulin'A · A Scow 12events 2 wins together · 3 podiums · 17% win rate · 13 of 76 races won Beat 59% of the fleet together(+19 vs. without) · best 1st · Jun 2021 – Jun 2026
  • Trevor Trepton · Geezer, Haulin' A · A Scow, E Scow 7events 1 wins together · 1 podiums · 14% win rate · 9 of 43 races won Beat 61% of the fleet together(+17 vs. without) · best 1st · Jun 2021 – Aug 2023
  • Red Tornehl · Dying A, Haulin' A, Haulin'A · A Scow 6events 1 wins together · 2 podiums · 17% win rate · 4 of 38 races won Beat 52% of the fleet together(+5 vs. without) · best 1st · Dec 2023 – Aug 2025
  • Dave Keck · Haulin' A, Haulin'A, Haulin’ A · A Scow 3events 1 wins together · 1 podiums · 3 events · 8 of 24 races won Beat 59% of the fleet together(+12 vs. without) · best 1st · Jan 2026 – Aug 2026
  • Augie Dale · Geezer, Haulin' A, Red Rocket · A Scow, E Scow 3events 0 wins together · 0 podiums · 3 events · 0 of 13 races won Beat 72% of the fleet together(+27 vs. without) · best 11th · Aug 2022 – Jun 2026

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

Rating history

-20272346201120142017202020232026Helm rating, all classesCrew rating, all classes

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

Event history · 29

DateEventBoatClassRoleFinish
9 Aug 20262026 ILYA Annual Championship RegattaHaulin'AA ScowCrew16th / 21
9 Jul 20262026 ILYA E Scow Invitational RegattaVida Del MarE ScowCrew22nd / 38
26 Jun 20262026 NCASA Annual ChampionshipHaulin' AA ScowMedic/Doctor11th / 22
8 Jan 20262026 A Fleet Championship SeriesHaulin’ AA ScowCrew1st / 8
10 Aug 20252025 ILYA Annual A - E - C Championship RegattaDying AA ScowCrew14th / 15
19 Jun 20252025 NCASA Annual ChampionshipHaulin' AA ScowMedic/Doctor15th / 20
1 Jan 20252025 A Scow Championship SeriesHaulin'AA ScowCrew2nd / 8
10 Aug 20242024 ILYA Annual Championship RegattaHaulin' AA ScowCrew11th / 16
21 Jun 20242024 NCASA Annual ChampionshipHaulin' AA ScowMedic/Doctor8th / 19
31 Dec 20232024 A Scow Championship SeriesHaulin'AA ScowCrew1st / 7
20 Sep 20232023 E Scow Blue ChipNew DirectionE ScowCrew16th / 23
7 Sep 20232023 E Scow National ChampionshipRed RocketE ScowOther14th / 126
15 Aug 20232023 ILYA Annual Championship RegattaHaulin' AA ScowCrew8th / 20
24 Jun 20232023 A Scow National Championship Regatta (NCASA)Haulin' AA ScowMedic/Doctor5th / 23
31 Dec 20222023 A Scow Championship SeriesHaulin' AA ScowCrew1st / 7
9 Sep 20222022 E Scow National ChampionshipLiftedE ScowSpinnaker trimmer12th / 69
16 Aug 20222022 ILYA Annual Championship RegattaHaulin' AA ScowCrew15th / 23
16 Aug 20222022 ILYA Annual Championship RegattaGeezerE ScowCrew14th / 50
24 Jun 20222022 NCASA Annual ChampionshipHaulin' AA ScowMedic/Doctor9th / 16
15 Aug 20212021 ILYA ChampionshipsDan GroskopfC ScowSkipper48th / 50
26 Jun 20212021 A Scow National Championship Regatta (NCASA)Haulin' AA ScowMedic/Doctor15th / 19
13 Aug 20192019 ILYA Annual Championship RegattaDan GroskopfC ScowSkipper39th / 41
18 Jul 20192019 ILYA C - Class InvitationalTBDC ScowSkipper28th / 38
12 Jul 20132013 Club 420 Association National ChampionshipCool Runnings420Skipper27th / 60
13 Jul 20122012 Upper Midwest Junior Olympic Sailing Festival1412420Skipper14th / 30

Crew rating across all classes: 335, #5,946.Helm rating across all classes: -202, #78,181. Compiled from public results; not an official ranking.