| # | School | Team | Rec. | |
|---|---|---|---|---|
| 1 | East Greenwich High School | Avengers | 11–3 | |
| 2 | Sharon High School | Eagles | 10–4 | |
| 3 | Marthas Vineyard RHS | Vineyarders | 8–6 | |
| 4 | Dartmouth High School | Sailing | 7–7 | |
| 5 | Greens Farms Academy | Dragons | 7–7 | |
| 5 | Darien High School | Blue Wave | 7–7 | |
| 7 | Lincoln Academy | Eagles | 3–11 | |
| 7 | Moses Brown School | Quakers | 3–11 |
Each side is the sum of its three boats (the skipper's fleet rating times 0.72 plus a team race offset learned from their past matches, plus the crew's offset and a small experience term) plus the school's team race strength and a home-water edge for the host. The win probability is a logistic function of the difference. The forecast was made before the event: the model was refitted on every match sailed before the first day, with fleet ratings as of the week before.
Fitted on the 9,849 team race matches sailed before 2023-05-06, using the line-ups that actually raced. It called 33 of 56 matches (59%) with a log-loss of 0.661 (a coin flip scores 0.693), so the event went poorly for the forecast. Orderliness −0.71 ± 0.35: an upset-heavy event, more orderly than 13% of high school team race events (temperature of the forecast log-odds that best fits the results, relative to the league average; nothing about the field, venue or wind predicts it, see the Weather tab). vs forecast is a team's wins minus the wins the model expected from the matches it sailed: positive means it beat its rating.
For each side, the performance strength is the value that would have made its record least surprising: the strength at which the model's expected wins over exactly these opponents equal the actual wins, with every opponent fixed at its pre-event strength. For a skipper, the same shift is applied only to their boat in the matches they sailed, with team-mates and opponents fixed; team-mates who sailed every match together therefore get the same number. Surprise is in bits: -log2 of the probability of the record at the pre-event strength minus the same at the performance strength. P(this good or better) treats matches as independent coin flips at the model's pre-event probabilities, so it ignores form within the day; read it as a rough guide.
Pre-event strength against the strength that would have made each record least surprising, everything else fixed. Δ is in the model's logit units, the same scale as the boat values above (a side is three boats plus the school term); green is a clear over-performance, red a clear under-performance. Skippers need three or more matches.
| Place | School | Strength | Perf. | Record | Exp. wins | Δ | Surprise (bits) | P(this good or better) |
|---|---|---|---|---|---|---|---|---|
| 1 | East Greenwich High School | 3.68 | 5.29 | 11–3 | 7.6 | +1.61 | 2.9 | 4% |
| 5 | Darien High School | 2.15 | 3.69 | 7–7 | 3.5 | +1.53 | 3.1 | 3% |
| 2 | Sharon High School | 4.29 | 4.67 | 10–4 | 9.2 | +0.37 | 0.2 | 44% |
| 3 | Marthas Vineyard RHS | 3.78 | 3.86 | 8–6 | 7.8 | +0.08 | 0.0 | 58% |
| 7 | Moses Brown School | 2.48 | 1.83 | 3–11 | 4.2 | −0.64 | 0.4 | 86% |
| 7 | Lincoln Academy | 2.55 | 1.75 | 3–11 | 4.5 | −0.80 | 0.7 | 90% |
| 4 | Dartmouth High School | 4.40 | 3.36 | 7–7 | 9.4 | −1.03 | 1.4 | 96% |
| 5 | Greens Farms Academy | 4.48 | 3.33 | 7–7 | 9.7 | −1.15 | 1.8 | 97% |
| Skipper | School | Value | Perf. | Record | Exp. wins | Δ | Surprise (bits) | P(this good or better) |
|---|---|---|---|---|---|---|---|---|
| Neala Bijari | East Greenwich High School | 0.96 | 2.58 | 11–3 | 7.6 | +1.61 | 2.9 | 4% |
| Maxwell Connor | Darien High School | 1.42 | 2.95 | 7–7 | 3.5 | +1.53 | 3.1 | 3% |
| Gavin Hanig | Darien High School | -0.25 | 1.28 | 7–7 | 3.5 | +1.53 | 3.1 | 3% |
| Andrew Liu | Sharon High School | 1.64 | 2.01 | 10–4 | 9.2 | +0.37 | 0.2 | 44% |
| Henry Do | Sharon High School | 1.42 | 1.79 | 10–4 | 9.2 | +0.37 | 0.2 | 44% |
| Otto Kalfelz | Moses Brown School | 0.89 | 0.24 | 3–11 | 4.2 | −0.64 | 0.4 | 86% |
| Merle Durant | Moses Brown School | 0.17 | -0.47 | 3–11 | 4.2 | −0.64 | 0.4 | 86% |
| Kate Mason | Lincoln Academy | 1.19 | 0.39 | 3–11 | 4.5 | −0.80 | 0.7 | 90% |
| Piper Carleton | Lincoln Academy | 1.54 | 0.73 | 3–11 | 4.5 | −0.80 | 0.7 | 90% |
| Finn Sperry | Dartmouth High School | 1.44 | 0.40 | 7–7 | 9.4 | −1.03 | 1.4 | 96% |
| Sam Sperry | Dartmouth High School | 1.60 | 0.56 | 7–7 | 9.4 | −1.03 | 1.4 | 96% |
| Max Laferriere | Greens Farms Academy | 1.61 | 0.46 | 7–7 | 9.7 | −1.15 | 1.8 | 97% |
| Ava Stevens | Greens Farms Academy | 1.26 | 0.11 | 7–7 | 9.7 | −1.15 | 1.8 | 97% |
Probability the model gave the side that went on to win. Red bars are upsets (the winner was given under 50%).
| # | Winner | Loser | Pos. | ||||
|---|---|---|---|---|---|---|---|
| 1 | Eagles | 2-3-4 | def. | Quakers | 1-5-6 | ||
| 2 | Dragons | 1-3-6 | def. | Vineyarders | 2-4-5 | ||
| 3 | Blue Wave | 1-2-6 | def. | Sailing | 3-4-5 | ||
| 4 | Eagles | 1-2-3 | def. | Avengers | 4-5-6 | ||
| 5 | Vineyarders | 1-2-4 | def. | Eagles | 3-5-6 | ||
| 6 | Quakers | 1-2-3 | def. | Blue Wave | 4-5-6 | ||
| 7 | Avengers | 2-3-5 | def. | Dragons | 1-4-6 | ||
| 8 | Sailing | 1-2-6 | def. | Eagles | 3-4-5 | ||
| 9 | Vineyarders | 1-2-3 | def. | Blue Wave | 4-5-6 | ||
| 10 | Avengers | 1-3-4 | def. | Eagles | 2-5-6 | ||
| 11 | Sailing | 1-3-6 | def. | Quakers | 2-4-5 | ||
| 12 | Dragons | 1-3-4 | def. | Eagles | 2-5-6 | ||
| 13 | Blue Wave | 1-3-4 | def. | Avengers | 2-5-6 | ||
| 14 | Vineyarders | 1-2-4 | def. | Sailing | 3-5-6 | ||
| 15 | Dragons | 1-3-4 | def. | Eagles | 2-5-6 | ||
| 16 | Eagles | 1-2-3 | def. | Quakers | 4-5-6 | ||
| 17 | Avengers | 1-2-4 | def. | Sailing | 3-5-6 | ||
| 18 | Dragons | 1-3-5 | def. | Blue Wave | 2-4-6 | ||
| 19 | Vineyarders | 1-2-4 | def. | Quakers | 3-5-6 | ||
| 20 | Eagles | 1-2-4 | def. | Eagles | 3-5-6 | ||
| 21 | Dragons | 1-3-5 | def. | Sailing | 2-4-6 | ||
| 22 | Avengers | 1-2-3 | def. | Quakers | 4-5-6 | ||
| 23 | Blue Wave | 1-4-5 | def. | Eagles | 2-3-6 | ||
| 24 | Eagles | 2-3-5 | def. | Vineyarders | 1-4-6 | ||
| 25 | Dragons | 1-2-3 | def. | Quakers | 4-5-6 | ||
| 26 | Sailing | 1-2-5 | def. | Eagles | 3-4-6 | ||
| 27 | Avengers | 1-2-5 | def. | Vineyarders | 3-4-6 | ||
| 28 | Blue Wave | 1-2-4 | def. | Eagles | 3-5-6 | ||
| 29 | Quakers | 2-3-4 | def. | Eagles | 1-5-6 | ||
| 30 | Vineyarders | 1-3-4 | def. | Dragons | 2-5-6 | ||
| 31 | Sailing | 1-2-5 | def. | Blue Wave | 3-4-6 | ||
| 32 | Eagles | 1-2-4 | def. | Avengers | 3-5-6 | ||
| 33 | Vineyarders | 1-2-3 | def. | Eagles | 4-5-6 | ||
| 34 | Blue Wave | 1-4-5 | def. | Quakers | 2-3-6 | ||
| 35 | Avengers | 2-3-4 | def. | Dragons | 1-5-6 | ||
| 36 | Eagles | 1-2-3 | def. | Sailing | 4-5-6 | ||
| 37 | Vineyarders | 2-3-4 | def. | Blue Wave | 1-5-6 | ||
| 38 | Avengers | 1-2-5 | def. | Eagles | 3-4-6 | ||
| 39 | Sailing | 1-3-6 | def. | Quakers | 2-4-5 | ||
| 40 | Eagles | 1-3-4 | def. | Dragons | 2-5-6 | ||
| 41 | Avengers | 1-2-5 | def. | Blue Wave | 3-4-6 | ||
| 42 | Sailing | 1-3-6 | def. | Vineyarders | 2-4-5 | ||
| 43 | Eagles | 2-3-4 | def. | Dragons | 1-5-6 | ||
| 44 | Eagles | 1-2-3 | def. | Quakers | 4-5-6 | ||
| 45 | Avengers | 2-3-5 | def. | Sailing | 1-4-6 | ||
| 46 | Blue Wave | 1-3-5 | def. | Dragons | 2-4-6 | ||
| 47 | Quakers | 2-3-4 | def. | Vineyarders | 1-5-6 | ||
| 48 | Eagles | 1-2-3 | def. | Eagles | 4-5-6 | ||
| 49 | Sailing | 1-2-5 | def. | Dragons | 3-4-6 | ||
| 50 | Avengers | 1-2-6 | def. | Quakers | 3-4-5 | ||
| 51 | Blue Wave | 1-2-6 | def. | Eagles | 3-4-5 | ||
| 52 | Vineyarders | 1-4-5 | def. | Eagles | 2-3-6 | ||
| 53 | Dragons | 1-2-6 | def. | Quakers | 3-4-5 | ||
| 54 | Eagles | 1-3-6 | def. | Sailing | 2-4-5 | ||
| 55 | Avengers | 2-3-4 | def. | Vineyarders | 1-5-6 | ||
| 56 | Eagles | 1-3-5 | def. | Blue Wave | 2-4-6 | ||
Short write-ups of what the ratings and results show, with the numbers and how they were computed.