Mark Sellers

Rating History

Crew Rating

Crew effect over their career (not scaled to a team): 96.73 league percentile among crews with 30+ races (uncertainty ±0.090 rating points, on a spread of about 0.04 between crews; 225 races with rated skippers).

Season	Team	Rating	Range	League percentile	Team percentile	On team	Races	Team page
Fall 2026	College of Charleston	4.67		96.95	83.33	2 of 9	8	Team page
Fall 2025	Arrowhead High School	2.55		76.06	91.67	1 of 6	37	Team page
Spring 2025	Arrowhead High School	3.23		83.32	91.67	1 of 6	37	Team page
Fall 2024	Arrowhead High School	3.78		91.27	87.50	1 of 4	34	Team page
Spring 2024	Arrowhead High School	2.90		78.79	90.00	1 of 5	17	Team page
Fall 2023	Arrowhead High School	2.97		78.85	92.86	1 of 7	30	Team page
Spring 2023	Arrowhead High School	4.42		94.15	91.67	1 of 6	21	Team page

How much better or worse boats do with this sailor crewing than their skipper's rating predicts. The rating is on the skipper scale: the team's skipper average plus the 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 the band is about as wide as the spread itself: use the rating to line crews up across teams, not as a ranking within a team. In 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. League percentile ranks the rating among all rostered crews in that league and season; team percentile ranks it among the crews on the same team that season (the share of teammates it beats, counting ties as half). Both use the skipper-scale rating, so the league one also reflects how strong the team's skippers are.

Regatta	Role	Div	Races	Avg
Fall 2026
SAISA Open Top 6 Invite	Crew	C	8	4.1

Related Sailors

League	Name	School	Year
ISSA	Mark Sellers	Arrowhead High School	'26
ISSA	Mark Sellers	Kettle Moraine High School	'26