Ethan Polyak

Career: 67.51 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	Detroit Country Day School	0.00		39.00	58.33	3 of 6	10	Team page

Regatta	Role	Div	Races	Avg	Rating
Fall 2025 Team page Season
CSS Regatta at PYC #2	Skipper	A	8	11.1	-0.62
CSS Kick Off Regatta	Skipper	A	2	15.5	-0.28
CSS Halloween Regatta at PYC	Skipper	A	7	15.9	-0.95
Autumn Breeze Regatta	Crew	B	10	9.6	+0.52

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.