Zachary Champney

Rating History

Singlehanded & Keelboat Ratings

DisciplineRating Rank RacesLast raced
Singlehanded1.92unranked (fewer than 10 races or not active)14Spring 2021
Keelboat1.17unranked (fewer than 10 races or not active)50Fall 2021

Team Race Rating

Rating Rank vs fleet rating Record
2.02 (fleet 2.83) unranked (fewer than 30 matches as skipper, or not active) −0.02 ± 0.18
about what the fleet rating predicts
as skipper 14–40 (26%)
SeasonRegattas Skipper W–LCrew W–L
Spring 2022312–31—
Spring 202122–9—
1.81.922.1Spring 2021Spring 2022Brown Team Race Invite (2021-04-24): rating 2.01, fleet rating alone 2.03, offset -0.01; record 1-5 in this boatTeam Race Invite (2022-03-19): rating 2.01, fleet rating alone 2.02, offset -0.02; record 10-7 in this boatJan T. Friis Team Race (2022-03-26): rating 2.01, fleet rating alone 2.02, offset -0.01; record 0-6 in this boatJan T. Friis Team Race (2022-03-26): rating 2.01, fleet rating alone 2.02, offset -0.01; record 0-10 in this boatMystic Lake TR (2022-04-09): rating 1.85, fleet rating alone 1.89, offset -0.04; record 2-8 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 (54 matches) the record is 14–40 against 17.3 wins the pre-event forecasts expected (−3.3). 0 regattas clearly above the rating (P ≤ 20%), 3 clearly below (P ≥ 80%); 4 bits of surprise in all.

DateRegattaRole Value Perf. RecordExp.
wins
Δ Surprise
(bits)
P(this good
or better)
2022-04-09Mystic Lake TRskipper2.350.932–84.5−1.422.499%
2022-03-26Jan T. Friis Team Raceskipper2.37-0.630–160.9≤−3.001.3>99%
2022-03-19Team Race Inviteskipper2.292.5810–79.1+0.290.241%
2021-04-24Brown Team Race Inviteskipper2.342.071–51.2−0.280.077%
2021-03-27Robin Wallace Team Raceskipper2.011.291–41.6−0.720.388%

Regatta results

Regatta Role Div Races Avg Rating
Spring 2022 Team page Season
Team Race Invite Skipper TR 13 69% —
Southern 7 Fleet Race Skipper A 8 5.5 2.02
Mystic Lake TR Skipper TR 12 25% —
Jan T. Friis Team Race Skipper TR 16 0% —
Boston University Trophy Skipper A 14 6.4 2.71
Fall 2021 Team page Season
Savin Hill Invite Skipper A 9 11.0 2.25
Salt Pond Invite Skipper A 10 3.7 3.76
Pine Trophy Keelboat Skipper A 13 5.1 1.09
Moody Trophy Skipper B 17 7.6 3.50
The Hatch Brown Trophy Skipper B 5 13.0 2.60
Boston University Invite Skipper B 15 6.9 1.71
Atlantic Coast Tournament Skipper B 8 11.0 2.47
Spring 2021 Team page Season
Robin Wallace Team Race Skipper TR 5 20% —
Robin Wallace Fleet Race Skipper A 4 5.8 3.24
Men's Open Singlehanded National Championship Singlehanded Skipper A 14 31.3 1.72
J70 Invite #3 Keelboat Skipper A 7 2.1 2.36
Camel invite Skipper A 9 5.9 2.54
Brown Team Race Invite Skipper TR 6 17% —
J-70 Invite #1 Keelboat Skipper A 7 3.3 1.27
Spring 2020 Team page Season
Icebreaker Fleet Race Skipper A 7 6.4 2.38
Fall 2019 Team page Season
Pine Trophy Keelboat Skipper A 14 3.8 1.40
NEISA Match Race Championship, Larry White Trophy Keelboat Skipper A 1 4.0 —
Great Herring Pond Open Skipper A 8 4.4 2.98
Donaghy Bowl Skipper B 5 1.8 2.94
Spring 2019 Team page Season
Vietor Trophy Skipper A, B 11 5.7 3.35
Southern 7 at URI Skipper B 5 7.0 1.55
Oberg Trophy Skipper B 11 6.7 2.45
BU Trophy Skipper B 6 8.7 1.83
J-70 Spring Open Keelboat Skipper A 8 2.6 1.85
J-70 Open Keelboat Crew A 12 1.8 —
Fall 2018 Team page Season
Mt. Hope Bay Invite Skipper B 6 6.3 2.36

From the notes

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

All notes →