Sophia Koester

Career: 28.72 percentile of ICSA crews (limited evidence)

▲ 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
Fall 2025	Flour Bluff High School	-0.33		27.12	12.50	4 of 4	8	Team page

Regatta	Role	Div	Races	Avg	Rating
Spring 2026 Team page Season
Spring Finale	Skipper	A	5	6.0	-1.32
Fall 2025 Team page Season
Champions of the Bay	Crew	A	8	5.4	-0.36

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

How do skipper ratings work?A log-strength fitted to every race at once, smoothed week to week.
What a rating point is worthA one-point edge is a 73% chance to beat another boat in a race; two points is 88%.
How does a crew rating work?A crew rating is small and uncertain; a worked example on one roster.