Roisin Liew

Career: 24.03 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
Spring 2025	Arizona State University	-1.07		6.00	20.83	10 of 12	16	Team page
Fall 2024	Arizona State University	-0.83		7.15	16.67	13 of 15	13	Team page

Regatta	Role	Div	Races	Avg	Rating
Spring 2025 Team page Season
PCCSC South Designate 2025	Crew	A	10	15.1	-0.01
Jeff Simon Memorial Regatta Coed	Crew	B	2	13.0	—
Cactus Cup	Crew	A	4	10.5	+0.19
Fall 2024 Team page Season
Stoney Burke JV	Crew	A	7	13.1	-0.17
Fall PCC JV	Crew	A	6	18.8	-0.56

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.