Chapman Petersen

Rating History

Singlehanded & Keelboat Ratings

DisciplineRating Rank RacesLast raced
Singlehanded4.623 of 198104Fall 2024
Keelboat1.91unranked (fewer than 10 races or not active)2Fall 2024

Team Race Rating

Rating Rank vs fleet rating Record
2.87 (fleet 4.63) unranked (fewer than 30 matches as skipper, or not active) +0.00 ± 0.18
about what the fleet rating predicts
as skipper 46–27 (63%)
SeasonRegattas Skipper W–LCrew W–L
Spring 2022224–10—
Spring 2019218–16—
Spring 201814–1—
22.252.52.753Spring 2019Spring 2022NESSA Team Racing Championship (Presidents Trophy) (2019-05-18): rating 2.09, fleet rating alone 2.08, offset +0.01; record 12-8 in this boatISSA Team Racing Championship (Baker Trophy) (2019-05-25): rating 2.11, fleet rating alone 2.08, offset +0.02; record 6-8 in this boatNESSA Team Racing Championship (Presidents Trophy) (2022-05-14): rating 2.92, fleet rating alone 2.90, offset +0.02; record 16-4 in this boatBaker Trophy 2022 (2022-05-21): rating 2.98, fleet rating alone 2.94, offset +0.04; record 1-0 in this boatBaker Trophy 2022 (2022-05-21): rating 2.98, fleet rating alone 2.94, offset +0.04; record 1-1 in this boatBaker Trophy 2022 (2022-05-21): rating 2.98, fleet rating alone 2.94, offset +0.04; record 6-5 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 5 graded regattas (73 matches) the record is 46–27 against 40.3 wins the pre-event forecasts expected (+5.7). 1 regatta clearly above the rating (P ≤ 20%), 0 clearly below (P ≥ 80%); 2 bits of surprise in all.

DateRegattaRole Value Perf. RecordExp.
wins
Δ Surprise
(bits)
P(this good
or better)
2022-05-21Baker Trophy 2022skipper3.263.588–67.3+0.320.145%
2022-05-14NESSA Team Racing Championship (Presidents Trophy)skipper3.043.5316–414.7+0.490.335%
2019-05-25ISSA Team Racing Championship (Baker Trophy)skipper2.363.316–84.1+0.951.018%
2019-05-18NESSA Team Racing Championship (Presidents Trophy)skipper2.132.5712–810.5+0.440.432%
2018-04-15Central Team Race Scrimmageskipper1.882.494–13.6+0.620.157%

Regatta results

Regatta Role Div Races Avg Rating
Spring 2022 Team page Season
O'Day Qualifier @ UConn Avery Point Skipper A 7 1.7 4.62
NESSA Team Racing Championship (Presidents Trophy) Skipper TR 20 80% —
NESSA George O'Day Trophy Skipper A 11 1.5 4.70
Connecticut State Championship 2022 Skipper A 7 2.4 3.69
Baker Trophy 2022 Skipper TR 14 57% —
2022 ISSA Mallory Dinghy Nationals Skipper A 18 8.9 1.05
Fall 2021 Team page Season
NESSA Single Handed Championship (Healy) - ILCA 6 Singlehanded Skipper A 8 2.8 2.89
Spring 2021 Team page Season
NESSA Mallory Qualifier Skipper B 9 6.7 -0.39
2021 ISSA Mallory Fleet Race National Championship Skipper A 8 10.0 0.88
Fall 2019 Team page Season
NESSA Single Handed Championship (Healy) - Radial Singlehanded Skipper A 11 1.3 4.56
ISSA Cressy National Championship - Radial Singlehanded Skipper A 14 3.9 2.04
Spring 2019 Team page Season
NESSA Team Racing Championship (Presidents Trophy) Skipper TR 20 60% —
ISSA Team Racing Championship (Baker Trophy) Skipper TR 14 43% —
ISSA Fleet Race Nationals (Mallory Trophy) Skipper B 14 9.9 0.62
Fall 2018 Team page Season
NESSA Single Handed Championship (Healy) - Radial Singlehanded Skipper A 11 1.8 3.19
ISSA Cressy National Championship - Radial Singlehanded Skipper A 14 4.7 1.94

Linked Profiles

League Name School Year
ICSA Chapman Petersen Stanford UniversityStanford University '26
ISSA Chapman Petersen Lake Forest High SchoolLake Forest High School '22

From the notes

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

All notes →

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