Jeffrey Petersen

Rating History

Singlehanded & Keelboat Ratings

DisciplineRating Rank RacesLast raced
Singlehanded3.03unranked (fewer than 10 races or not active)9Fall 2017
Keelboat1.62unranked (fewer than 10 races or not active)20Fall 2023

Team Race Rating

Rating Rank vs fleet rating Record
2.94 (fleet 3.92) unranked (fewer than 30 matches as skipper, or not active) +0.10 ± 0.17
about what the fleet rating predicts
as skipper 54–19 (74%)
SeasonRegattas Skipper W–LCrew W–L
Spring 2025441–6—
Spring 202419–8—
Spring 202324–5—
2.252.52.753Spring 2023Spring 2024Spring 2025College Sailing Team Race National Championship (2023-05-27): rating 2.24, fleet rating alone 2.26, offset -0.01; record 1-2 in this boatThe Wood Trophy (2024-03-09): rating 2.53, fleet rating alone 2.55, offset -0.02; record 9-8 in this boatJohn Jackson Memorial Regatta (2025-03-08): rating 2.74, fleet rating alone 2.77, offset -0.02; record 15-0 in this boatGraham Hall Team Race (2025-03-15): rating 2.83, fleet rating alone 2.80, offset +0.04; record 2-0 in this boatGraham Hall Team Race (2025-03-15): rating 2.83, fleet rating alone 2.80, offset +0.04; record 2-0 in this boatGraham Hall Team Race (2025-03-15): rating 2.83, fleet rating alone 2.80, offset +0.04; record 9-2 in this boatAaron Szambecki Team Race (2025-03-22): rating 2.93, fleet rating alone 2.84, offset +0.09; record 11-2 in this boatICSA Open Team Race National Championship (2025-04-24): rating 3.01, fleet rating alone 2.88, offset +0.13; record 1-0 in this boatICSA Open Team Race National Championship (2025-04-24): rating 3.01, fleet rating alone 2.88, offset +0.13; record 1-2 in this boatTeam race rating

Rating before each regatta driven (solid; dots green when the boat won 60% or more of its matches there, red under 40%) and what the fleet rating alone would give (dashed). The gap is the team race offset as it stood at the time. Hover a dot for the regatta; click to open it.

Team race surprisal: regatta by regatta

Over 7 graded regattas (73 matches) the record is 54–19 against 49.0 wins the pre-event forecasts expected (+5.0). 2 regattas clearly above the rating (P ≤ 20%), 2 clearly below (P ≥ 80%); 7 bits of surprise in all.

DateRegattaRole Value Perf. RecordExp.
wins
Δ Surprise
(bits)
P(this good
or better)
2025-04-24ICSA Open Team Race National Championshipskipper3.633.252–22.4−0.380.182%
2025-03-22Aaron Szambecki Team Raceskipper3.464.3111–29.3+0.851.022%
2025-03-15Graham Hall Team Raceskipper3.344.6413–210.4+1.302.28%
2025-03-08John Jackson Memorial Regattaskipper3.206.2015–013.0≥+3.003.011%
2024-03-09The Wood Trophyskipper2.682.629–89.2−0.070.066%
2023-05-27College Sailing Team Race National Championshipskipper2.560.191–21.4−2.370.6>99%
2023-03-11John Jackson Memorial Team Race Regattaskipper2.352.053–33.4−0.310.178%

Regatta results

Regatta Role Div Races Avg Rating
Spring 2025 Team page Season
John Jackson Memorial Regatta Skipper TR 17 94% —
ICSA Open Team Race National Championship Skipper TR 15 40% —
Graham Hall Team Race Skipper TR 15 87% —
Arrigan Memorial Regatta Skipper A 2 7.5 4.02
Aaron Szambecki Team Race Skipper TR 17 71% —
Fall 2024 Team page Season
Riley Cup Skipper B 6 2.7 4.63
Spring 2024 Team page Season
The Wood Trophy Skipper TR 17 53% —
Fall 2023 Team page Season
Tom Curtis Memorial Regatta Skipper A 8 5.4 3.61
Intrepid Trophy - MAISA Match Race Keelboat Skipper A 1 1.0 —
ICSA Match Race National Championship Keelboat Skipper A 1 4.0 —
Chesapeake Open Skipper A 12 5.1 4.21
Spring 2023 Team page Season
College Sailing Team Race National Championship Skipper TR 15 40% —
John Jackson Memorial Team Race Regatta Skipper TR 7 57% —
Fall 2022 Team page Season
Riley Cup Skipper B 13 6.8 2.52
MAISA Match Race Championship Skipper TR 10 90% —

Linked Profiles

League Name School Year
ISSA Jeffrey Petersen Mater Dei High SchoolMater Dei High School '20

From the notes

Short write-ups of what the ratings and results show, with the numbers and how they were computed.

All notes →