PCCSC Women's Singlehanded Championship

SchoolSailor R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 TOT
Stanford University Stanford University Christina Sakellaris '21 2 2 1 1 1 1 1 2 1 2 14
Stanford University Stanford University Sophia Sole '21 3 1 2 2 2 2 2 1 2 1 18
University of Southern California University of Southern California Sarah Alexander '19 1 3 3 3 5 3 3 3 5 3 32
Stanford University Stanford University Olivia Gugliemini '19 4 4 4 4 3 4 4 4 3 4 38
University of California at Santa Barbara University of California at Santa Barbara Claire Hunt '19 6 6 7 7 7 6 5 6 6 6 62
University of Hawaii University of Hawaii Hayden Lahr '22 8 7 6 5 6 7 7 7 7 7 67
University of California at Santa Cruz University of California at Santa Cruz Alexis Miller '20 5 5 5 6 4 5 6 5 4 5 70 MRP
University of Hawaii University of Hawaii Devon Stapleton '22 7 8 8 8 8 8 8 8 8 8 79

Performance rating asks, for each skipper: holding every other boat fixed, which rating makes my actual race-by-race finishes least surprising? Boats are valued with the singlehanded rating rather than the fleet rating: 0.79 × the skipper's fleet rating from the week before the event (unrated skippers start at 1.11); the skipper's own singlehanded offset. Strength differences are scaled by 0.80 before they become probabilities, the value that calibrates the model on seasons it had not seen. Non-finishes (OCS, DNF and similar) are left out of the fitting, as in the rating model.

Percentile places a rating among the 309 ICSA sailors with a singlehanded rating who raced the discipline in the last three seasons. Surprise is how many bits more surprising the finishes were at the pre-event rating than at the performance rating. P(this good or better) simulates the event 3,000 times at the pre-event ratings, with the same regatta-form model as the fleet analysis pages, and reports how often the skipper would score this many points or fewer in the races they sailed.

The singlehanded offsets are the current ones (the discipline files keep no weekly history), so a skipper's own offset has already seen this event; offsets are shrunk hard, so the effect is a few hundredths at most. Only skippers are rated.

  • u no fleet rating — the model's level for unrated skippers is the baseline.

Division A  8 boats · 10 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Christina Sakellaris '21Stanford University Cardinal 110/103.145.13+1.9984th → 99th5.91%1.4 / 2.8
2Sophia Sole '21Stanford University Cardinal 310/102.454.31+1.8662nd → 98th6.81%1.8 / 3.6
3Sarah Alexander '19University of Southern California10/102.402.59+0.1961st → 68th0.134%3.2 / 3.7
4Olivia Gugliemini '19Stanford University Cardinal 210/101.622.34+0.7240th → 60th1.523%3.8 / 4.6
5Alexis Miller '20University of California at Santa Cruz10/100.721.63+0.9117th → 40th2.530%5.0 / 5.6
6Claire Hunt '19University of California at Santa Barbara10/101.360.72−0.6432nd → 17th1.689%6.2 / 4.9
7Hayden Lahr '22University of Hawaii Rainbows 110/100.830.39−0.4418th → 12th0.788%6.7 / 5.4
8Devon Stapleton '22University of Hawaii Rainbows 210/100.90u-2.87−3.7721st → 1st18.5>99%7.9 / 5.4

Conditions — 09/22/2018 (8am–6pm)

☀️Clear sky
Humidity 66%  ·  Pressure 1014.7 hPa

Temperature

63°F
↑ 67°F   ↓ 53°F
Feels like 62°F

Wind

● from   ▲ toward
4.8 kn
avg  ·  max 6.1 kn
Gusts to 17.9 kn
From SW (225°)

Sky & Precipitation

Cloud cover28% Sunshine11.0 hrs Humidity66% Pressure1014.7 hPa

What this breeze does at Berkeley — from fleet racing

Breeze: SW about 8 kn (weather reanalysis in the scorer’s units)
In fleet races at Berkeley in this breeze: an underdogs’ day (−0.04)
Underdogs’ conditions: in fleet racing here the fleet bunches up and lower-rated boats beat the seeds more often than usual.

Orderliness is how tightly a fleet race’s finishing order follows the pre-regatta ratings, relative to a typical event (0): positive is the favourites’ day, negative the underdogs’. A value of ±0.04 means a rating gap counts about 4% less than on a typical day. This event is not a fleet race the rating model scores, so there is no actual value for it: this is what this venue’s fleet racing history says about the breeze on the day, read off the chart at the star. How this is estimated · compare venues.

Orderliness beyond the fleet at Berkeley by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (24 labelled fleet-race days at Berkeley).

From the notes

Short write-ups of what the ratings and results show, with the numbers and how they were computed.

All notes →