Sailor · 2019–2026

Mark D'Onofrio

Handicap J/105 PHRF handicap

Search sailors · About these ratings

Events: 32
Win rate: 13%
Podium rate: 56%
Typically beats: 54%
Best class ranking: #976
Longest win streak: 8

Most successful partnership: Ken Dieselman
Biggest lift: Ken Dieselman
Longest-running crew: Ken Dieselman
Nemesis: Charlie Garrard
Rival: Steve Hollis
Signature result: 1st of 6

Partnerships · 51 sailors

Most successful partnership: Ken Dieselman — 4 wins · 16 podiums in 29 events together · 14% win rate

Ken Dieselman · Cerberus · Handicap, J/105 29events 4 wins together · 16 podiums · 14% win rate · 25 of 96 races won Beat 58% of the fleet together(+2 vs. without) · best 1st · Jul 2019 – Sep 2025
Nancy White · Cerberus · J/105 3events 0 wins together · 0 podiums · 3 events · 0 of 18 races won Beat 42% of the fleet together(−18 vs. without) · best 4th · Aug 2019 – Jul 2023
Chris White · Cerberus · J/105 3events 0 wins together · 0 podiums · 3 events · 0 of 21 races won Beat 30% of the fleet together(−32 vs. without) · best 6th · Jul 2019 – Jul 2021
Mark Dieselman · Cerberus · J/105 2events 0 wins together · 0 podiums · 2 events · 0 of 12 races won Beat 49% of the fleet together · best 4th · Aug 2019 – Jul 2023
Wes Whitmyer Jr · Moneyball, Slingshot · IC37, PHRF handicap 2events 0 wins together · 1 podiums · 2 events · 0 of 5 races won Beat 60% of the fleet together · best 2nd · Jun 2021 – Sep 2026
Jay Dieselman · Cerberus · J/105 2events 0 wins together · 0 podiums · 2 events · 0 of 15 races won Beat 30% of the fleet together · best 11th · Jul 2019 – Aug 2019
Ryan Dieselman · Cerberus · J/105 2events 0 wins together · 0 podiums · 2 events · 0 of 12 races won Beat 48% of the fleet together · best 4th · Jul 2021 – Jul 2023
Cam Dieselman · Cerberus · J/105 2events 0 wins together · 0 podiums · 2 events · 0 of 12 races won Beat 48% of the fleet together · best 4th · Jul 2021 – Jul 2023
C White · Cerberus · Handicap 1events 0 wins together · 0 podiums · 1 events · 0 of 1 race won Beat 57% of the fleet together · best 7th · Sep 2022 – Sep 2022
C White · Cerberus · Handicap 1events 1 wins together · 1 podiums · 1 events · 1 of 1 race won Beat 100% of the fleet together · best 1st · Jul 2024 – Jul 2024

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

Rating history

Event history · 32

Date	Event	Boat	Class	Role	Finish
4 Sep 2026	2026 Vineyard Race	Moneyball	PHRF handicap	Floater	2nd / 4
13 Sep 2025	HYC Great Chase Race	Cerberus	Handicap	Skipper	8th / 17
14 Sep 2024	Chowder Cup	Cerberus	Handicap	Skipper	2nd / 3
8 Sep 2024	Fall Sunday Series	Cerberus	Handicap	Skipper	4th / 5
21 Aug 2024	Late Summer Series	Cerberus	Handicap	Skipper	2nd / 6
17 Jul 2024	Early Summer Series	Cerberus	Handicap	Skipper	4th / 6
13 Jul 2024	Scituate Invitational	Cerberus	Handicap	Skipper	1st / 3
5 Jun 2024	Scituate Sailing Spring Series	Cerberus	Handicap	Skipper	6th / 6
9 Sep 2023	Chowder Cup	Cerberus	Handicap	Skipper	2nd / 4
3 Sep 2023	Fall Sunday Series	Cerberus	Handicap	Skipper	1st / 4
2 Aug 2023	Late Summer Series	Cerberus	Handicap	Skipper	2nd / 6
27 Jul 2023	2023 Helly Hansen Sailing World Regatta Series - Marblehead	Cerberus	J/105	Owner	4th / 10
28 Jun 2023	Early Summer Series	Cerberus	Handicap	Skipper	1st / 6
31 May 2023	Spring Series	Cerberus	Handicap	Skipper	2nd / 5
17 Sep 2022	HYC Great Chase Race	Cerberus	Handicap	Skipper	7th / 15
28 Aug 2022	Fall Sunday Series	Cerberus	Handicap	Skipper	2nd / 5
3 Aug 2022	Late Summer Series	Cerberus	Handicap	Skipper	3rd / 6
9 Jul 2022	Scituate Invitational - Pursuit Race	Cerberus	Handicap	Skipper	4th / 8
22 Jun 2022	Early Summer Series	Cerberus	Handicap	Skipper	1st / 6
29 Aug 2021	Fall Series	Cerberus	Handicap	Skipper	2nd / 5
4 Aug 2021	Late Summer Series	Cerberus	Handicap	Skipper	2nd / 6
22 Jul 2021	2021 Helly Hansen NOOD Regatta Marblehead	Cerberus	J/105	Crew	6th / 8
14 Jul 2021	Early Summer Series	Cerberus	Handicap	Skipper	2nd / 6
26 Jun 2021	Scituate Invitational - New Pursuit Race Format	Cerberus	Handicap	Skipper	3rd / 5
12 Jun 2021	167th NYYC Annual Regatta	Slingshot	IC37	Other	8th / 16

Ratings

Class	Rating	Rank	Impact
Full-size sailing Crew	3 provisional	#43628 band 28470–56064	—
J/105 Crew	-43 provisional	#976 band 687–1176	—

2 more classes, not yet ranked

IC37 · Crew · 4 races, 1 event · rating 9
Full-size sailing · Helm · 1 race, 1 event · rating 15

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	26 events	4 wins	beats 61%
As crew	6 events	0 wins	beats 46%

Positions: Owner (2) · Floater (1) · Co-Skipper (1)

How they race

Closer	+6 pts	last race of an event vs. the rest
Comeback	−18 pts	the race after a bottom-half finish
Consistency	47%	100% = the same result every event
Small fleets	61%	of the fleet beaten

Head to head

Helm	Races	W–L
Jeffrey Rosen	64	50–14
Andrew Vachon	56	21–35
Greg Morse	45	31–14
Kevin O' Leary	40	38–2
Steven Goldberg	27	18–9
Ken Bowden	27	9–18
Steve Hollis	27	12–15
Ric Dexter	27	5–22
Marty Galligan	27	19–8
Charlie Garrard	27	0–27
Mark Masur	15	2–13
Cheryl Harvey	15	3–12

Most-beaten opponent: Kevin O' Leary (38–2).

Seasons

Year	Events	Wins	Beat
2026	1	0	67%
2025	1	0	56%
2024	6	1	49%
2023	6	2	81%
2022	5	1	70%
2021	7	0	52%
2020	4	0	45%
2019	2	0	30%

Boats

Cerberus · Handicap, J/105 · 30 events · 2019–2025
Moneyball · PHRF handicap · 1 events · 2026
Slingshot · IC37 · 1 events · 2021

Where they race

Scituate Sailing · 13 events
Satuit Boat Club · 11 events
Marblehead, MA, USA · 4 events
Hull Yacht Club · 2 events
Newport, RI, USA · 1 events
Stamford, CT, USA · 1 events

Is this you?

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

Crew rating, Full-size sailing: 3, #43,628.Helm rating, Full-size sailing: 15. Compiled from public results; not an official ranking.