Spring Lake High School '16
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: 14.63 percentile among ICSA crews with 30+ races. Uncertainty ±0.102 rating points from 101 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 |
|---|---|---|---|
| 0.12 | unranked (fewer than 30 matches as skipper, or not active) | +0.00 about what the fleet rating predicts |
as crew 7–14 (33%) |
| Season | Regattas | Skipper W–L | Crew W–L |
|---|---|---|---|
| Spring 2016 | 1 | — | 5–1 |
| Spring 2015 | 2 | — | 2–13 |
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 2 graded regattas (19 matches) the record is 6–13 against 7.4 wins the pre-event forecasts expected (−1.4). 0 regattas clearly above the rating (P ≤ 20%), 1 clearly below (P ≥ 80%); 3 bits of surprise in all.
| Date | Regatta | Role | Value | Perf. | Record | Exp. wins |
Δ | Surprise (bits) |
P(this good or better) |
|---|---|---|---|---|---|---|---|---|---|
| 2016-04-23 | MISSA East Team Race Qualifier | crew | 1.19 | 2.12 | 5–1 | 4.5 | +0.93 | 0.3 | 52% |
| 2015-05-16 | Baker Qualifier | crew | 0.90 | -1.45 | 1–12 | 3.0 | −2.36 | 2.3 | 99% |
| Regatta | Role | Div | Races | Avg | Rating |
|---|---|---|---|---|---|
| Spring 2016 Team page Season | |||||
| MISSA Mallory Doublehanded Championship | Crew | A | 7 | 15.1 | — |
| Leukemia Cup | Crew | B | 8 | 5.5 | — |
| MISSA East Team Race Qualifier | Crew | TR | — | — | — |
| Fall 2015 Team page Season | |||||
| Turkey Leg Regatta | Crew | B | 4 | 3.0 | — |
| Shepherd Championship 2015 | Crew | B | 11 | 5.6 | — |
| Michigan State 420 Champs | Crew | B | 9 | 5.7 | — |
| Great Oaks Qual Championship | Crew | A | 2 | 16.0 | — |
| DCDS Halloween Regatta | Crew | A | 5 | 8.6 | — |
| Cornwell Memorial | Crew | A | 6 | 5.0 | — |
| Coast Guard City Classic | Crew | A | 4 | 5.0 | — |
| Spring 2015 Team page Season | |||||
| Red 8 Regatta | Crew | A | 7 | 9.0 | — |
| East Qualifier, team racing | Crew | TR | — | — | — |
| Baker Qualifier | Crew | TR | 13 | 8% | — |
| Fall 2014 Team page Season | |||||
| Turkey Leg Regatta | Crew | A | 4 | 8.2 | — |
| Halloween Regatta DCDS | Crew | A | 5 | 8.6 | — |
| Gordon Cornwell Memorial | Crew | A | 5 | 6.6 | — |
| Spring 2014 Team page Season | |||||
| MISSA Mallory Qualifiers 2014 | Crew | A | 4 | 9.5 | — |
| League | Name | School | Year |
|---|---|---|---|
| ICSA | Sam Colvin |  Grand Valley State University |
'20 |
Short write-ups of what the ratings and results show, with the numbers and how they were computed.
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