St. Francis High School Traverse City '17
How much better or worse boats do with this sailor crewing than their skipper's rating predicts, shown on the skipper scale so crews can be lined up across teams. Percentiles compare against rostered crews that season (league) or teammates (team).
How crew ratings work →Crew effect over their whole career, not scaled to a team: 17.22 percentile among ICSA crews with 30+ races. Uncertainty ±0.107 rating points from 68 races with rated skippers.
How crew ratings work →No season rating yet: needs 8+ crewed races in a season.
A team race rating is what the sailor brings to one of the three boats: 0.72 x their fleet rating plus a team-race offset learned from every match they sailed, shrunk toward zero so a few matches cannot move it far. Sides are compared by the sum of their three boats plus the school's team race strength.
| Rating | Rank | vs fleet rating | Record |
|---|---|---|---|
| 0.36 (fleet 0.59) | unranked (fewer than 30 matches as skipper, or not active) | +0.00 ± 0.18 about what the fleet rating predicts |
as skipper 8–9 (47%) as crew 10–19 (34%) |
| Season | Regattas | Skipper W–L | Crew W–L |
|---|---|---|---|
| Spring 2017 | 2 | 8–9 | — |
| Spring 2016 | 2 | — | 6–8 |
| Spring 2015 | 3 | — | 4–11 |
For each regatta, the boat value that would have made this sailor's record least surprising: the shift applied to their boat alone, in the matches they sailed, with team-mates and opponents fixed at the pre-event forecast. A boat's skipper and crew share the boat, so they get the same number when they sailed every match together. Surprise is in bits at the pre-event value minus at the performance value; P(this good or better) treats the matches as independent at the forecast probabilities. Regattas forecast from fewer than 1,000 training matches are left out.
Over 4 graded regattas (31 matches) the record is 14–17 against 16.6 wins the pre-event forecasts expected (−2.6). 0 regattas clearly above the rating (P ≤ 20%), 3 clearly below (P ≥ 80%); 2 bits of surprise in all.
| Date | Regatta | Role | Value | Perf. | Record | Exp. wins |
Δ | Surprise (bits) |
P(this good or better) |
|---|---|---|---|---|---|---|---|---|---|
| 2017-05-13 | Cherryland no wind regatta | skipper | 0.61 | 1.69 | 2–1 | 1.5 | +1.08 | 0.3 | 47% |
| 2017-04-22 | Spring Lake Team Race | skipper | 0.55 | -0.17 | 6–8 | 7.6 | −0.72 | 0.7 | 90% |
| 2016-05-14 | Cherryland Team Race | crew | 0.39 | -0.14 | 4–4 | 4.7 | −0.52 | 0.2 | 83% |
| 2016-04-23 | MISSA East Team Race Qualifier | crew | 0.63 | -0.29 | 2–4 | 2.8 | −0.92 | 0.4 | 89% |
| Regatta | Role | Div | Races | Avg | Rating |
|---|---|---|---|---|---|
| Spring 2017 Season | |||||
| Spring Lake Team Race | Skipper | TR | — | — | — |
| Leukemia Cup | Skipper | A | 1 | 16.0 | -0.52 |
| Cherryland no wind regatta | Skipper | TR | 3 | 67% | — |
| Fall 2016 Season | |||||
| Shepherd Championship 2016 | Crew | A | 2 | 14.5 | — |
| Cornwell Memorial Regatta | Crew | A | 7 | 8.7 | — |
| 2016 Turkey Leg Regatta | Crew | A | 7 | 9.1 | — |
| Spring 2016 Season | |||||
| MISSA Mallory Doublehanded Championship | Crew | A | 7 | 16.6 | — |
| MISSA East Team Race Qualifier | Crew | TR | — | — | — |
| Cherryland Team Race | Crew | TR | — | — | — |
| Fall 2015 Season | |||||
| Turkey Leg Regatta | Crew | A | 4 | 8.8 | — |
| Shepherd Championship 2015 | Crew | A | 4 | 6.2 | — |
| Michigan State 420 Champs | Crew | A | 9 | 6.6 | — |
| Cornwell Memorial | Crew | A | 6 | 6.5 | — |
| Coast Guard City Classic | Crew | A | 6 | 9.0 | — |
| Cherryland Invitational | Crew | B | 6 | 8.5 | — |
| Spring 2015 Season | |||||
| TCSF Championship | Crew | TR | — | — | — |
| TC St. Francis Regatta | Crew | TR | — | — | — |
| Red 8 Regatta | Crew | B | 4 | 3.2 | — |
| East Qualifier, team racing | Crew | TR | — | — | — |
| League | Name | School | Year |
|---|---|---|---|
| ICSA | Jamie Mcclellan |  University of Michigan |
'21 |
Short write-ups of what the ratings and results show, with the numbers and how they were computed.
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