Jones College Prep Jones College Prep

Skipper Rankings – Fall 2025

#SkipperRating League
percentile
Team
percentile
Races
1Grace Renz2.9497.0987.5051
2Nissa Berman2.7395.3362.5054
3Quinn Frakt1.4080.3637.509
4Sarah Kaplan1.0673.5612.507

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.

Skipper ratings over their careers
Week at Jones College PrepWeek before / elsewhereLine colour = skipper (’yy = graduating class)

Weekly rating of every skipper on the roster across their whole career so far, one point per week their rating moved. By class year lines every graduating class up at the start of its freshman year, so each class sits one year further left than the one after it. Hover a line to isolate it.

Crew Rankings – Fall 2025

#Crew Rating Range League
percentile
Team
percentile
Races
1Damian Amoruso3.34Rating 3.34; 90% range 0.7 to 6.0; team skipper average 2.0198.5087.509
2Norah Franklin2.46Rating 2.46; 90% range -0.3 to 5.2; team skipper average 2.0194.5862.5050
3Duke Diep1.83Rating 1.83; 90% range -0.8 to 4.4; team skipper average 2.0187.7737.5030
4Sarah Kaplan0.40Rating 0.40; 90% range -2.4 to 3.2; team skipper average 2.0154.3312.5022

Also on the roster, with little racing*

Crew*RatingRange Races this seasonCareer races
Robert Gustafson*–not enough data to rate714
Grace Renz*–not enough data to rate16
Campbell Hoambrecker*–not enough data to rate210
Jack Eskilson*0.67Rating 0.67; 90% range -2.4 to 3.7; team skipper average 2.01185

What is pushing these ratings up or down

Crews are only compared through the skippers they have shared. A skipper's boats do a little better or worse than their rating predicts depending on who is crewing, and the rating is built from those differences. Each big blue dot is a crew on this roster, each small square a skipper they have sailed with, and each line a pairing: blue pushes the crew up, orange pushes them down, thicker means more racing behind it. Click a crew or a skipper.

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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). Ratings are on the skipper scale (×18.7 the crew effect). League percentile also reflects how strong the team's skippers are.

From the notes

Short write-ups of what the ratings and results show, with the numbers and how they were computed.

All notes →