Boston College '23
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: 63.41 percentile among ICSA crews with 30+ races. Uncertainty ±0.105 rating points from 61 races with rated skippers.
How crew ratings work →No season rating yet: needs 8+ crewed races in a season.
Each discipline has its own scale, built from the sailor's main rating and their results in that discipline. The numbers are not comparable with the main rating or with each other.
How these ratings work →| Discipline | Rating | Rank | Races | Last raced |
|---|---|---|---|---|
| Singlehanded | 2.65 | unranked (fewer than 10 races or not active) | 39 | Spring 2023 |
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 |
|---|---|---|---|
| 2.32 (fleet 3.26) | unranked (fewer than 30 matches as skipper, or not active) | −0.04 ± 0.17 about what the fleet rating predicts |
as skipper 48–36 (57%) |
| Season | Regattas | Skipper W–L | Crew W–L |
|---|---|---|---|
| Spring 2023 | 2 | 10–2 | — |
| Fall 2022 | 2 | 13–6 | — |
| Spring 2022 | 2 | 15–18 | — |
| Spring 2021 | 2 | 10–10 | — |
Rating before each regatta driven (solid; dots green when the boat won 60% or more of its matches there, red under 40%) and what the fleet rating alone would give (dashed). The gap is the team race offset as it stood at the time. Hover a dot for the regatta; click to open it.
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 8 graded regattas (84 matches) the record is 48–36 against 52.1 wins the pre-event forecasts expected (−4.1). 1 regatta clearly above the rating (P ≤ 20%), 4 clearly below (P ≥ 80%); 14 bits of surprise in all.
| Date | Regatta | Role | Value | Perf. | Record | Exp. wins |
Δ | Surprise (bits) |
P(this good or better) |
|---|---|---|---|---|---|---|---|---|---|
| 2023-04-08 | Mystic Lake Team Racing Invite | skipper | 2.61 | 5.61 | 8–0 | 6.3 | ≥+3.00 | 2.7 | 14% |
| 2023-03-18 | Ivan Geiger Team Race | skipper | 2.54 | 1.02 | 2–2 | 3.1 | −1.51 | 1.2 | 98% |
| 2022-10-23 | Franklin Lane Trophy | skipper | 2.69 | 1.94 | 2–2 | 2.7 | −0.75 | 0.4 | 90% |
| 2022-10-22 | Norman Reid Team Race | skipper | 2.70 | 2.54 | 11–4 | 11.4 | −0.15 | 0.0 | 72% |
| 2022-03-26 | Harpswell Sound Team Race | skipper | 2.77 | 0.49 | 9–7 | 13.2 | −2.28 | 7.4 | >99% |
| 2022-03-19 | Team Race Invite | skipper | 2.79 | 3.08 | 6–11 | 5.2 | +0.29 | 0.2 | 41% |
| 2021-03-27 | Thames River Team Race | skipper | 2.67 | 1.38 | 6–4 | 7.5 | −1.28 | 1.5 | 97% |
| 2021-03-14 | SMC Spring Fling Team Race | skipper | 2.35 | 3.07 | 4–6 | 2.9 | +0.73 | 0.6 | 29% |
| Regatta | Role | Div | Races | Avg | Rating |
|---|---|---|---|---|---|
| Spring 2023 Team page Season | |||||
| Mystic Lake Team Racing Invite | Skipper | TR | 8 | 100% | — |
| Ivan Geiger Team Race | Skipper | TR | 17 | 53% | — |
| 2023 Intercollegiate Tech Dinghy Championship Singlehanded | Skipper | A | 10 | 8.5 | 2.76 |
| Fall 2022 Team page Season | |||||
| Norman Reid Team Race | Skipper | TR | 15 | 73% | — |
| The Harvard FJ Invitational | Skipper | A | 10 | 4.6 | 3.65 |
| George Warren Smith Trophy | Skipper | A | 8 | 9.2 | 2.88 |
| Franklin Lane Trophy | Skipper | TR | 4 | 50% | — |
| Spring 2022 Team page Season | |||||
| Team Race Invite | Skipper | TR | 13 | 31% | — |
| Harpswell Sound Team Race | Skipper | TR | 16 | 56% | — |
| Fall 2021 Team page Season | |||||
| Savin Hill Invite | Skipper | B | 10 | 5.6 | 3.47 |
| Oberg Trophy | Skipper | C | 12 | 7.5 | 3.04 |
| Hood Trophy | Skipper | B | 10 | 6.3 | 3.44 |
| Hewitt Trophy | Skipper | A | 14 | 5.8 | 3.40 |
| Spring 2021 Team page Season | |||||
| Thames River Team Race | Skipper | TR | 10 | 60% | — |
| SMC Spring Fling Team Race | Skipper | TR | 10 | 40% | — |
| SMC Spring Fling | Skipper | B | 5 | 11.2 | 0.49 |
| Fall 2019 Team page Season | |||||
| Oberg Trophy | Skipper | B | 8 | 14.4 | 1.32 |
| Nickerson Trophy | Skipper | A | 8 | 10.0 | 2.21 |
| Nicholas Barnett Trophy | Skipper | B | 16 | 5.9 | 3.08 |
| Callagy Ross Trophy | Skipper | B | 11 | 7.2 | 0.30 |
| League | Name | School | Year |
|---|---|---|---|
| ISSA | Graham Ness |  Minnetonka High School |
'19 |
Short write-ups of what the ratings and results show, with the numbers and how they were computed.
