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Sailor · 2007–2026

Michael O'Callaghan

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Events
103

451 races · 49 race wins

Win rate
10%

10% win rate · 10 of 103

Podium rate
28%

29 top-three finishes

Typically beats
69%

of boats faced (range 68%–71%, 2,824 boats)

Best class ranking
#28

Helm in Moore 24 · rating 167

Longest win streak
4

race wins in a row

Most successful partnership
David Halliwill

6 wins · 15 podiums in 18 events together · 33% win rate

Best trio
Tad Lacey & David Halliwill

6 wins · 14 podiums in 17 events, all three aboard

Biggest lift
Mark Maymar

+24 points of fleet beaten when sailing together

Longest-running crew
David Halliwill

Jan 2016 – Sep 2025 · 18 events

Nemesis
Stephen Bourdow

33–107 head to head in 140 races

Rival
Peter Schoen

114–133 in 248 races

Signature result
4th of 113

2013 Delta Ditch Run · PHRF handicap · 8 Jun 2013

Partnerships · 26 sailors

Most successful partnership: David Halliwill — 6 wins · 15 podiums in 18 events together · 33% win rate
  • David Halliwill · Peregrine · Handicap, J/120, ORC handicap, PHRF handicap 18events 6 wins together · 15 podiums · 33% win rate · 30 of 95 races won Beat 78% of the fleet together(+18 vs. without) · best 1st · Jan 2016 – Sep 2025
  • Tad Lacey · Peregrine · Handicap, J/120, ORC handicap, PHRF handicap 17events 6 wins together · 14 podiums · 35% win rate · 30 of 89 races won Beat 78% of the fleet together(+18 vs. without) · best 1st · Jan 2016 – Sep 2025
  • Randy Smith · Peregrine · Handicap, J/120, ORC handicap, PHRF handicap 15events 5 wins together · 13 podiums · 33% win rate · 24 of 79 races won Beat 82% of the fleet together(+22 vs. without) · best 1st · Jul 2016 – Sep 2025
  • John Verdoia · Peregrine, Wet Spot, WET SPOT · J/120, Moore 24, ORC handicap 10events 2 wins together · 7 podiums · 20% win rate · 14 of 69 races won Beat 74% of the fleet together(+12 vs. without) · best 1st · Sep 2017 – Aug 2025
  • Denis Mulligan · Peregrine, Wet Spot · J/120, Moore 24, ORC handicap 10events 2 wins together · 6 podiums · 20% win rate · 14 of 75 races won Beat 66% of the fleet together(+3 vs. without) · best 1st · Sep 2017 – Aug 2025
  • EJ Rowland · Peregrine · J/120, ORC handicap 9events 3 wins together · 7 podiums · 33% win rate · 18 of 67 races won Beat 75% of the fleet together(+13 vs. without) · best 1st · Sep 2017 – Sep 2025
  • Chris Davison · Peregrine · J/120, ORC handicap 9events 3 wins together · 7 podiums · 33% win rate · 18 of 67 races won Beat 75% of the fleet together(+13 vs. without) · best 1st · Sep 2017 – Sep 2025
  • Jenny Krone · Peregrine, Wet Spot · Moore 24, ORC handicap 8events 1 wins together · 4 podiums · 13% win rate · 10 of 63 races won Beat 62% of the fleet together(−2 vs. without) · best 1st · Sep 2021 – Sep 2025
  • Owen Sordillo · Peregrine · ORC handicap 5events 1 wins together · 3 podiums · 20% win rate · 7 of 34 races won Beat 67% of the fleet together(+4 vs. without) · best 1st · Sep 2022 – Sep 2025
  • Greg Felton · Peregrine · J/120, ORC handicap 5events 2 wins together · 4 podiums · 40% win rate · 13 of 33 races won Beat 71% of the fleet together(+8 vs. without) · best 1st · Sep 2017 – Sep 2025

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

Rating history

-112034162008201120142017202020232026Helm rating, all classesCrew rating, all classes

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

Event history · 103

DateEventBoatClassRoleFinish
22 Aug 2026Belvedere Classic Regatta & Great SF Schooner RaceVikingHandicapSkipper1st / 10
20 Jun 2026Hobie Commodore's Regatta, Huntington Lake, CA51MooreSkipper10th / 17
18 Oct 20252025 Fall InvitationalWet SpotMoore 24Skipper10th / 15
11 Sep 20252025 Rolex Big Boat SeriesPeregrineORC handicapSkipper1st / 8
23 Aug 20252025 Phyllis Kleinman SwiftsurePeregrineORC handicapCrew3rd / 9
7 Jun 202534th Delta Ditch RunWet SpotPHRF handicapSkipper16th / 76
17 May 2025Elite Fleet RegattaWet SpotMoore 24Skipper7th / 11
12 Apr 2025Moore 24 Spring RoadmasterWet SpotMoore 24Skipper10th / 18
24 Oct 2024GREAT PUMPKIN 2024 FLEET RACING ON SATURDAYWet SpotMoore 24Skipper15th / 20
19 Oct 20242024 Jessica CupVikingHandicapSkipper3rd / 6
25 Sep 2024GREAT PUMPKIN 2024 SUNDAY PURSUIT RACEWet SpotHandicapSkipper41st / 152
19 Sep 20242024 Moore 24 NationalsWet SpotMoore 24Skipper16th / 26
12 Sep 20242024 Rolex Big Boat SeriesPeregrineORC handicapMain Trimmer4th / 11
10 Aug 2024Belvedere Classic & Great SF Schooner RaceVikingHandicapSkipper4th / 7
20 Jul 20242024 High Sierra Regatta - Weekend 2 Huntington Lake Calif.Wet SpotMoore 24Skipper9th / 13
22 Jun 2024Fannette RaceWet SpotPHRF handicapSkipper5th / 20
21 Jun 2024Lake Tahoe Roadmasters RegattaWet SpotMoore 24Skipper8th / 14
10 May 20242024 Moore 24 Santa Cruz RegattaWet SpotMoore 24Skipper6th / 12
10 Mar 2024BIG DADDY 2024 SUNDAY PURSUIT RACEwet spotHandicapSkipper58th / 110
28 Oct 2023GREAT PUMPKIN 2023 FLEET RACING ON SATURDAYWet spotMoore 24Skipper12th / 18
29 Sep 2023Moore 24 Roadmaster SeriesWet SpotMoore 24Skipper8th / 10
14 Sep 20232023 Rolex Big Boat SeriesPeregrineORC handicapMid Mast6th / 6
19 Aug 20232023 Phyllis Kleinman Swiftsure RegattaWet SpotMoore 24Other5th / 8
5 Aug 2023Double Damned 2023Wet SpotPHRF handicapSkipper9th / 16
29 Jul 2023HR1D Regatta 2023Wet spotMoore 24Skipper10th / 13

Helm rating across all classes: 278, #11,896.Crew rating across all classes: 274, #9,386. Compiled from public results; not an official ranking.