Tilly Niemann

Career: 85.61 percentile of ICSA crews

Includes linked high school and college seasons.

▲ 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 2024	Arrowhead High School	1.45		74.91	50.00	3 of 5	12	Team page
Fall 2023	Arrowhead High School	1.56		79.39	50.00	4 of 7	10	Team page

Regatta	Role	Div	Races	Avg	Rating
Spring 2025 Team page Season
May Madness	Skipper	B	12	3.0	2.35
Lake Forest April 19th Tier 3	Skipper	B	3	1.7	3.11

League	Name	School	Year
ISSA	Tilly Niemann	Madison West	'28
ISSA	Tilly Niemann	Arrowhead High School	'28

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.