Massachusetts Institute of Technology '25
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: 93.49 percentile among ICSA crews with 30+ races. Uncertainty ±0.072 rating points from 362 races with rated skippers.
How crew ratings work →| Season | Team | Rating | Range | League percentile |
Team percentile |
On team | Races | Team page |
|---|---|---|---|---|---|---|---|---|
| Spring 2025 | Massachusetts Institute of Technology | 4.48 | 95.31 | 94.44 | 1 of 9 | 12 | Team page | |
| Fall 2024 | Massachusetts Institute of Technology | 4.61 | 96.15 | 96.88 | 1 of 16 | 56 | Team page | |
| Spring 2024 | Massachusetts Institute of Technology | 4.38 | 94.02 | 86.36 | 2 of 11 | 42 | Team page | |
| Fall 2023 | Massachusetts Institute of Technology | 4.45 | 94.32 | 88.46 | 2 of 13 | 63 | Team page |
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 |
|---|---|---|---|
| 0.18 (fleet 0.24) | unranked (fewer than 30 matches as skipper, or not active) | +0.00 about what the fleet rating predicts |
as crew 152–183 (45%) |
| Season | Regattas | Skipper W–L | Crew W–L |
|---|---|---|---|
| Spring 2025 | 8 | — | 35–42 |
| Spring 2024 | 9 | — | 49–64 |
| Spring 2023 | 8 | — | 52–34 |
| Spring 2022 | 6 | — | 16–43 |
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 29 graded regattas (332 matches) the record is 152–180 against 152.4 wins the pre-event forecasts expected (−0.4). 3 regattas clearly above the rating (P ≤ 20%), 13 clearly below (P ≥ 80%); 21 bits of surprise in all.
| Date | Regatta | Role | Value | Perf. | Record | Exp. wins |
Δ | Surprise (bits) |
P(this good or better) |
|---|---|---|---|---|---|---|---|---|---|
| 2025-04-12 | Thompson Trophy Camel | crew | 3.05 | 3.69 | 4–2 | 3.4 | +0.65 | 0.3 | 45% |
| 2025-04-05 | Fowle Trophy | crew | 3.00 | 2.93 | 5–13 | 5.2 | −0.08 | 0.0 | 65% |
| 2025-03-29 | 2025 Marchiando Trophy-Grey Regatta | crew | 2.93 | 3.15 | 9–12 | 8.1 | +0.22 | 0.1 | 42% |
| 2025-03-22 | 2025 Staake Trophy | crew | 2.90 | 5.90 | 6–0 | 5.9 | ≥+3.00 | 0.2 | 87% |
| 2025-03-15 | Southern NE Team Race | crew | 2.85 | 2.99 | 6–6 | 5.7 | +0.14 | 0.0 | 54% |
| 2025-03-08 | Camel Team Race | crew | 2.65 | 1.54 | 2–3 | 3.1 | −1.11 | 0.9 | 95% |
| 2025-03-01 | Liam O'Keefe Team Race Trophy | crew | 2.63 | 3.75 | 3–4 | 1.6 | +1.12 | 1.1 | 19% |
| 2024-04-28 | ICSA Women's Team Race National Championship | crew | 3.11 | 2.14 | 2–9 | 3.3 | −0.97 | 0.8 | 93% |
| 2024-04-13 | NEISA Women’s Team Race Champs/Legler Trophy | crew | 3.22 | 3.84 | 6–8 | 4.5 | +0.62 | 0.7 | 25% |
| 2024-04-06 | Yale Women's Team Race | crew | 3.21 | 2.34 | 3–12 | 5.2 | −0.87 | 1.3 | 95% |
| 2024-03-30 | Dellenbaugh Women's Team Race Trophy | crew | 3.18 | 2.80 | 4–12 | 5.0 | −0.38 | 0.3 | 82% |
| 2024-03-23 | The Duplin Trophy | crew | 3.16 | 3.83 | 6–6 | 4.8 | +0.67 | 0.6 | 29% |
| 2024-03-16 | Women's SNETR | crew | 3.17 | 2.49 | 5–7 | 6.4 | −0.68 | 0.7 | 91% |
| 2024-03-09 | Franny Charles Women's Team Race | crew | 3.16 | 6.16 | 8–0 | 6.9 | ≥+3.00 | 1.6 | 30% |
| 2024-03-02 | Harvard Women's Team Race | crew | 3.22 | 1.71 | 2–5 | 3.6 | −1.51 | 1.7 | 98% |
| 2024-02-24 | USF Women's Team Race | crew | 3.25 | 2.56 | 13–5 | 14.6 | −0.68 | 0.8 | 92% |
| 2023-04-29 | Women's Team Race National Championship | crew | 3.12 | 4.15 | 8–3 | 5.9 | +1.04 | 1.5 | 14% |
| 2023-04-15 | NEISA Women's Team Racing Championship | crew | 2.96 | 3.31 | 8–6 | 7.0 | +0.35 | 0.2 | 39% |
| 2023-04-08 | Yale Women's Team Race | crew | 2.94 | 3.51 | 4–4 | 3.1 | +0.56 | 0.3 | 38% |
| 2023-04-01 | Dellenbaugh Women's Team Race Trophy | crew | 2.99 | 2.95 | 4–5 | 4.1 | −0.04 | 0.0 | 67% |
| 2023-03-25 | Duplin Women’s TR | crew | 2.95 | 3.03 | 8–6 | 7.8 | +0.07 | 0.0 | 58% |
| 2023-03-18 | Ivan Geiger Team Race | crew | 2.97 | 2.61 | 10–7 | 11.1 | −0.36 | 0.3 | 82% |
| 2023-03-11 | Franny Charles Women’s Team Race Regatta | crew | 3.02 | 3.33 | 8–1 | 7.7 | +0.31 | 0.1 | 62% |
| 2023-03-05 | Harvard Women's Team Race | crew | 3.02 | 2.54 | 2–2 | 2.2 | −0.48 | 0.1 | 90% |
| 2022-04-09 | 2022 NEISA Team Race Championship | crew | 2.70 | 1.71 | 1–9 | 2.1 | −0.99 | 0.7 | 93% |
| 2022-04-02 | The 39th Lynne Marchiando Regatta | crew | 2.56 | 4.05 | 7–6 | 3.5 | +1.49 | 4.0 | 2% |
| 2022-03-19 | Southern New England Team Race | crew | 2.66 | 2.16 | 5–13 | 6.6 | −0.50 | 0.6 | 87% |
| 2022-03-12 | The Wood Trophy | crew | 2.58 | 3.97 | 2–1 | 1.1 | +1.39 | 0.9 | 31% |
| 2022-03-05 | Sharpe Trophy Team Race | crew | 2.48 | 1.00 | 1–13 | 2.8 | −1.48 | 1.7 | 98% |
| League | Name | School | Year |
|---|---|---|---|
| ISSA | Samantha Karlson |  The Williams School |
'21 |
Short write-ups of what the ratings and results show, with the numbers and how they were computed.
