James Tessmer

Crew Rating

Crew effect over their career (not scaled to a team): 54.12 league percentile among ISSA crews with 30+ races (uncertainty ±0.114 rating points, on a spread of about 0.04 between crews; 30 races with rated skippers).

Includes seasons from this sailor's linked profile (high school and college), so the rating follows them across schools.

Season	Team	Rating	Range	League percentile	Team percentile	On team	Races	Team page
Fall 2024	Arrowhead High School	1.60		82.44	37.50	3 of 4	9	Team page
Fall 2023	Oconomowoc High School	0.57		56.19	70.00	2 of 5	8	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 2024 Team page Season
Dusty Waters Regatta_C420	Crew	A	5	6.6
2024 Fall Scramble	Crew	A	4	7.2
Fall 2023 Team page Season
Fall Scramble Regatta	Crew	B	5	7.0
Fall 2022 Team page Season
2022 Fall Scramble	Crew	A	4	4.5

Related Sailors

League	Name	School	Year
ISSA	James Tessmer	Oconomowoc High School	'28
ISSA	James Tessmer	Kettle Moraine High School	'28