NESSA Single Handed (Nancy Healy) - Laser

SchoolSailor R1 R2 R3 R4 R5 R6 R7 R8 TOT
Ridgefield High School Ridgefield High School Richie Gordon '16 1 1 2 1 2 2 1 2 12
St. George's School St. George's School John Kirkpatrick '18 2 2 5 2 4 1 2 1 19
Cape Elizabeth High School Cape Elizabeth High School Cooper Siepert '16 3 4 4 3 1 3 5 3 26
Brookline High Brookline High Benjamin Rizika '22 4 3 3 4 3 5 4 5 31
Brunswick School Brunswick School Peter Pillari '17 6 5 1 5 5 4 6 4 36
Cape Cod Academy Cape Cod Academy Christos Karplus '17 5 6 6 6 6 6 3 6 44

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 495 ISSA 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.

Division A  6 boats · 8 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Richie Gordon '16Ridgefield High School8/83.094.73+1.6499th → 99th3.55%1.5 / 2.6
2John Kirkpatrick '18St. George's School8/82.623.16+0.5594th → 99th0.623%2.4 / 3.0
3Cooper Siepert '16Cape Elizabeth High School8/82.072.49+0.4284th → 92nd0.442%3.2 / 3.5
4Benjamin Rizika '22Brookline High8/81.112.13+1.0361st → 84th2.331%3.9 / 4.3
5Peter Pillari '17Brunswick School8/82.120.97−1.1584th → 57th3.288%4.5 / 3.5
6Christos Karplus '17Cape Cod Academy8/81.42-0.61−2.0371st → 9th5.597%5.5 / 4.1

Conditions — 10/11/2015 (8am–6pm)

☀️Clear sky
Humidity 60%  ·  Pressure 1013.1 hPa

Temperature

60°F
↑ 64°F   ↓ 50°F
Feels like 55°F

Wind

● from   ▲ toward
7.5 kn
avg  ·  max 8.9 kn
Gusts to 22.2 kn
From SW (222°)

Sky & Precipitation

Cloud cover21% Sunshine10.9 hrs Humidity60% Pressure1013.1 hPa

What this breeze does at Moses Brown — from fleet racing

Breeze: SW about 10 kn (weather reanalysis in the scorer’s units)
In fleet races at Moses Brown in this breeze: a typical day (−0.00)
Nothing in this breeze favours either side in fleet racing here: results follow the ratings about as 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 ±0.00 means a rating gap counts about 1% 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 Moses Brown by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (no labelled days at Moses Brown: the all-venue pattern is shown).

From the notes

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

All notes →