Archbishop Spalding '24
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: 46.12 percentile among ICSA crews with 30+ races. Uncertainty ±0.117 rating points from 10 races with rated skippers. Few races, so the estimate stays near the middle.
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 |
|---|---|---|---|---|
| Keelboat | 1.57 | unranked (fewer than 10 races or not active) | 11 | Fall 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 |
|---|---|---|---|
| 2.39 (fleet 3.82) | unranked (fewer than 30 matches as skipper, or not active) | +0.03 ± 0.16 about what the fleet rating predicts |
as skipper 98–55 (64%) as crew 6–15 (29%) |
| Season | Regattas | Skipper W–L | Crew W–L |
|---|---|---|---|
| Spring 2024 | 2 | 16–10 | — |
| Fall 2023 | 2 | 12–8 | — |
| Spring 2023 | 4 | 26–12 | — |
| Fall 2022 | 2 | 18–11 | — |
| Spring 2022 | 5 | 26–14 | 2–1 |
| Fall 2021 | 1 | — | 4–14 |
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 16 graded regattas (172 matches) the record is 103–69 against 102.8 wins the pre-event forecasts expected (+0.2). 2 regattas clearly above the rating (P ≤ 20%), 6 clearly below (P ≥ 80%); 16 bits of surprise in all.
| Date | Regatta | Role | Value | Perf. | Record | Exp. wins |
Δ | Surprise (bits) |
P(this good or better) |
|---|---|---|---|---|---|---|---|---|---|
| 2024-04-27 | MASSA Team Championship and Baker Qualifier | skipper | 2.90 | 3.85 | 11–8 | 8.4 | +0.96 | 1.4 | 13% |
| 2024-04-13 | MDISA Team Race Qualifier | skipper | 2.83 | 2.89 | 5–2 | 5.0 | +0.06 | 0.0 | 69% |
| 2023-10-14 | MASSA Team Race Championship | skipper | 2.87 | 4.32 | 4–2 | 2.6 | +1.45 | 1.1 | 21% |
| 2023-09-30 | MDISA Fall Team Race Champs (Qualifier) | skipper | 2.90 | 1.99 | 8–6 | 9.7 | −0.91 | 0.9 | 93% |
| 2023-05-20 | 2023 Baker National Championship | skipper | 3.03 | 0.03 | 0–5 | 2.8 | ≤−3.00 | 5.8 | >99% |
| 2023-04-29 | MASSA Team Race Championship | skipper | 2.92 | 3.63 | 10–5 | 8.6 | +0.71 | 0.5 | 30% |
| 2023-04-01 | MDISA Team Race Qualifier | skipper | 2.79 | 3.14 | 9–2 | 8.8 | +0.35 | 0.0 | 71% |
| 2023-03-18 | MDISA SSA Team Race | skipper | 2.57 | 5.57 | 7–0 | 6.8 | ≥+3.00 | 0.2 | 83% |
| 2022-10-22 | MASSA Fall 2022 Team Race Championship | skipper | 2.57 | 1.84 | 13–9 | 14.8 | −0.72 | 0.7 | 91% |
| 2022-10-08 | 2022 MDISA TR Qualifier | skipper | 2.56 | 1.17 | 5–2 | 5.7 | −1.40 | 0.6 | 95% |
| 2022-05-21 | National Invitational Tournament (NIT) | skipper | 2.23 | 2.43 | 9–5 | 8.6 | +0.20 | 0.0 | 52% |
| 2022-04-30 | MASSA 2022 Team Race Championship | skipper | 2.15 | 2.47 | 4–6 | 3.5 | +0.32 | 0.1 | 50% |
| 2022-04-09 | MDISA Team Race Qualifier | skipper | 2.04 | 3.52 | 8–2 | 7.0 | +1.47 | 0.8 | 33% |
| 2022-04-02 | MDISA SCC Team Race | skipper | 1.93 | 4.93 | 4–0 | 2.6 | ≥+3.00 | 2.4 | 14% |
| 2022-04-02 | MDISA SCC Team Race | crew | 1.93 | 2.77 | 2–1 | 1.7 | +0.84 | 0.1 | 64% |
| 2021-11-06 | MASSA Gold Fall Team Championship | crew | 1.99 | 0.89 | 4–14 | 6.1 | −1.10 | 1.3 | 95% |
| Regatta | Role | Div | Races | Avg | Rating |
|---|---|---|---|---|---|
| Fall 2023 Team page Season | |||||
| MDISA Keelboat Qualifier @ Annapolis Yacht Club Keelboat | Skipper | A | 5 | 2.4 | 2.75 |
| MASSA Fall Keelboat Championship 2023 Keelboat | Skipper | A | 6 | 5.0 | 0.93 |
| Fall 2022 Team page Season | |||||
| MDISA Keelboat Qualifier @ Annapolis Yacht Club Keelboat | Crew | A | 6 | 2.3 | — |
| 2022 Keelboat National Invational Keelboat | Crew | A | 9 | 6.1 | — |
| Fall 2021 Team page Season | |||||
| MDISA Keelboat Qualifier @ Annapolis Yacht Club Keelboat | Crew | A | 5 | 3.4 | — |
| League | Name | School | Year |
|---|---|---|---|
| ICSA | Owen Macwilliams |  U. S. Naval Academy |
'28 |
Short write-ups of what the ratings and results show, with the numbers and how they were computed.
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