Birmingham Public Schools

Roster – Spring 2023

Skipper Rankings – Spring 2023

#	Skipper	Rating	League percentile	Team percentile	Races
1	Michael Mullins	1.96	83.53	95.00	19
2	Sean Ellison	0.86	56.24	85.00	14
3	Andy Zhu	0.39	40.23	75.00	8
4	Jamie Stewart	0.39	40.10	65.00	9
5	Ryan Ellison	0.27	36.48	55.00	5
6	Marko Nedeljkovic	-0.45	15.50	45.00	6
7	Maya Nagy	-0.52	13.92	35.00	5
8	Michael Butcher	-0.63	10.99	25.00	5
9	Alex Fox	-0.68	10.08	15.00	6
10	Nate Bacheller	-0.83	7.22	5.00	5

Skippers with at least 4 rated boat-races this season, ranked by their rating after their last race of the season. Percentiles count ties as half.

Crew Rankings – Spring 2023

#	Crew	Rating	Range	League percentile	Team percentile	Races
1	Nate Bacheller	0.93		52.43	83.33	16
2	Jamie Stewart	-0.23		20.72	50.00	20
3	Marko Nedeljkovic	-0.51		15.30	16.67	15

Also on the roster, with little racing*

Crew*	Rating	Range	Races this season	Career races
Alex Wszolek*	1.45		3	161
Ryan Ellison*	0.54		6	102
Maya Nagy*	0.40		6	87
Michael Mullins*	–	not enough data to rate	5	5
Sean Ellison*	-0.32		3	50
Michael Butcher*	-1.57		6	69
Alex Fox*	-1.73		5	52

How to read the Range column: the dot is the rating, the shaded band is where it plausibly sits (90% range), and the dashed line is the team's skipper average. A wide band means little evidence, and bands that overlap mean the crews cannot be told apart. Ratings are on the skipper scale: the team's skipper average plus each crew's difference from their teammates, multiplied by 18.7 so a team's crews spread out like its skippers. Crews on one team differ far less than skippers do, so each band is about as wide as the spread: use the ratings to line crews up across teams, not as a ranking within a team. Ranked crews have at least 8 races this season; * means low evidence (under 8 races this season, or under 30 career races with rated skippers). League percentile also reflects how strong the team's skippers are.