Summit High School '20
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 |
|---|---|---|---|
| 1.37 (fleet 2.23) | unranked (fewer than 30 matches as skipper, or not active) | −0.00 ± 0.18 about what the fleet rating predicts |
as skipper 4–14 (22%) |
| Season | Regattas | Skipper W–L | Crew W–L |
|---|---|---|---|
| Fall 2018 | 1 | 3–7 | — |
| Fall 2017 | 1 | 1–7 | — |
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 (18 matches) the record is 4–14 against 4.8 wins the pre-event forecasts expected (−0.8). 0 regattas clearly above the rating (P ≤ 20%), 1 clearly below (P ≥ 80%); 1 bits of surprise in all.
| Date | Regatta | Role | Value | Perf. | Record | Exp. wins |
Δ | Surprise (bits) |
P(this good or better) |
|---|---|---|---|---|---|---|---|---|---|
| 2018-09-30 | NJISA Fall Team Champs | skipper | 1.20 | 1.78 | 3–7 | 2.5 | +0.58 | 0.2 | 48% |
| 2017-10-15 | NJISA 2017 Fall Team Race Qualifer | skipper | 1.00 | -0.49 | 1–7 | 2.3 | −1.49 | 1.0 | 95% |
| League | Name | School | Year |
|---|---|---|---|
| ICSA | Sean Groskoph |  College of Charleston |
'24 |
| ISSA | Sean Groskoph |  Chatham High School |
'20 |
Short write-ups of what the ratings and results show, with the numbers and how they were computed.
To have this profile removed, email quinnbrighton2005@gmail.com.
