Sean Morrison

Rating History

Crew Rating

Career: 41.55 percentile of ICSA crews

Includes linked high school and college seasons.

0.250.500.75W. Macneille (4 races): -0.36W. MacneilleA. Marnik (5 races): +0.11A. MarnikSpring 2023: rating 0.48Spring 2023Winchester High School
▲ boats did better with this crew than with the skipper's usual crews▼ worseArrow length = size of the push, in rating points
Season Team Rating Range League
percentile
Team
percentile
On team Races Team page
Spring 2023 Winchester High School 0.48 Rating 0.48; 90% range -2.5 to 3.5; team skipper average 1.22 27.36 41.67 4 of 6 9 –

Team Race Rating

Rating Rank vs fleet rating Record
1.00 (fleet 1.38) 314 of 331 +0.01 ± 0.17
about what the fleet rating predicts
as skipper 24–38 (39%)
SeasonRegattas Skipper W–LCrew W–L
Spring 2026216–8—
Spring 202448–30—
0.50.751Spring 2024Spring 2026McMerrick Cup SUNDAY (2024-03-03): rating 0.52, fleet rating alone 0.55, offset -0.03; record 2-1 in this boatSalve Regina Team Race Invite (2024-03-10): rating 0.55, fleet rating alone 0.55, offset -0.00; record 3-7 in this boatIvan Geiger Team Race (2024-03-16): rating 0.55, fleet rating alone 0.55, offset +0.00; record 1-16 in this boatSalve TR Invite (2026-03-07): rating 0.93, fleet rating alone 0.94, offset -0.01; record 2-4 in this boatBrenton Cove Team Race (2026-03-21): rating 1.01, fleet rating alone 1.03, offset -0.01; record 14-4 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 6 graded regattas (62 matches) the record is 24–38 against 26.1 wins the pre-event forecasts expected (−2.1). 1 regatta clearly above the rating (P ≤ 20%), 3 clearly below (P ≥ 80%); 5 bits of surprise in all.

DateRegattaRole Value Perf. RecordExp.
wins
Δ Surprise
(bits)
P(this good
or better)
2026-03-21Brenton Cove Team Raceskipper1.361.2914–414.2−0.070.068%
2026-03-07Salve TR Inviteskipper1.241.052–42.1−0.190.090%
2024-03-16Ivan Geiger Team Raceskipper0.99-0.401–163.0−1.391.797%
2024-03-10Salve Regina Team Race Inviteskipper0.961.103–72.9+0.140.061%
2024-03-03McMerrick Cup SUNDAYskipper0.883.492–10.7+2.612.313%
2024-03-02McMerrick Cup SATURDAYskipper0.90-0.002–63.2−0.900.893%

Regatta results

Regatta Role Div Races Avg Rating
Fall 2026 Team page Season
Sister Esther Whalen Trophy Skipper A 10 14.3 1.31
Savin Hill Invite Skipper B 8 12.2 0.59
Penobscot Bay Open Skipper A 10 7.9 0.24
Oberg Trophy Skipper B 3 12.0 1.41
Moody Trophy Skipper A 12 14.5 0.78
Hatch Brown Trophy 2026 Skipper B 8 14.2 1.33
Callagy Ross '14 Regatta Skipper A 13 9.6 0.06
Spring 2026 Team page Season
Vietor Trophy Skipper A 12 12.2 1.71
Salve TR Invite Skipper TR 7 43% —
Oberg Trophy Skipper B 14 12.8 1.22
New England Dinghy Tournament Skipper A 7 3.0 2.06
Icebreaker Fleet Race Skipper A 5 8.0 1.28
CENTRAL 1 FLEET RACE Skipper A 5 3.4 0.31
Brenton Cove Team Race Skipper TR 18 78% —
Fall 2025 Team page Season
Savin Hill Invite Skipper A 8 11.5 1.12
The Hood Trophy Skipper A 4 13.8 1.38
Hatch Brown Trophy 2025 Skipper C 3 14.3 1.55
Harry Anderson Trophy Skipper B 6 17.8 -1.74
Great Herring Pond Open Skipper A 7 6.1 0.96
The George Warren Smith Trophy 25 Skipper B 7 12.0 1.07
Chris Loder Trophy Skipper B 6 3.8 1.51
84th Professor Erwin Schell Trophy Skipper A 14 15.2 1.58
Spring 2025 Team page Season
Southern 7 Skipper A 4 5.8 0.88
Central Series Tufts Skipper A 10 8.4 -0.86
BU Trophy Skipper A 11 10.5 1.10
Fall 2024 Team page Season
Sister Esther Trophy Skipper B 14 11.1 1.08
Salve Invite Skipper A 9 5.0 —
Salt Pond Invite Skipper A 7 7.3 0.63
Mt. Hope Bay Invite Skipper A 10 12.3 0.90
The George Warren Smith Trophy 24 Skipper A 8 18.9 -0.63
Spring 2024 Team page Season
Sunday Southern #5 Fleet Race Skipper A 6 12.3 —
Saturday Southern #5 Fleet Race Skipper A 6 10.2 -0.30
Salve Regina Team Race Invite Skipper TR 10 30% —
Salve Regina Saturday FR Invite Skipper A 10 11.3 -1.73
College Sailing Regional Teams Championship Skipper A 8 5.6 -0.07
Oberg Trophy Skipper C 5 14.8 -0.48
McMerrick Cup SUNDAY Skipper TR 4 75% —
McMerrick Cup SATURDAY Skipper TR 8 25% —
Ivan Geiger Team Race Skipper TR 17 6% —
George E. Morris Trophy Skipper B 8 5.8 1.44
Fall 2023 Team page Season
Salve Regina Fleet Race Invite Skipper A 3 3.7 1.92
Salt Pond Invite Skipper A 5 12.8 -0.59
Oberg Trophy Skipper B 14 14.1 1.10
NE Fall Tournament Skipper B 6 2.8 1.84
C - Invite Skipper A 6 5.3 2.14
Great Herring Pond Open Skipper B 8 5.0 0.61
The George Warren Smith Trophy Skipper A 9 13.9 1.08

Linked Profiles

League Name School Year
ISSA Sean Morrison Sharon High SchoolSharon High School '22
ISSA Sean Morrison Winchester High SchoolWinchester High School '23

From the notes

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

All notes →