Open ILCA 7 - PCISA Single-handed District Champs

SchoolSailor R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 TOT
Cathedral Catholic High School Cathedral Catholic High School Owen Fretwell '26 4 3 1 1 2 2 4 1 1 1 20
Corona del Mar High School Corona del Mar High School Michael Sentovich '26 2 1 3 4 1 4 2 4 2 3 26
University High School University High School Qi Yan '26 1 4 2 3 DSQ 1 1 3 3 2 27
Los Alamitos High School Los Alamitos High School Stewart Mccaleb '26 3 2 4 2 3 3 3 2 4 4 30
Blue and Gold Blue and Gold Sam Suddath '26 5 5 5 5 4 5 5 5 5 6 50
Rowland Hall Rowland Hall Shaler Mahan '27 6 6 6 6 5 6 6 6 6 5 58

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.

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

Division A  6 boats · 10 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Owen Fretwell '26Cathedral Catholic High School10/103.183.65+0.4799th → 99th0.519%2.0 / 2.6
2Michael Sentovich '26Corona del Mar High School10/103.172.89−0.2899th → 97th0.254%2.6 / 2.6
3Qi Yan '26University High School10/102.69u3.66+0.9695th → 99th1.937%2.7 / 3.0
4Stewart Mccaleb '26Los Alamitos High School10/102.412.74+0.3391st → 95th0.342%3.0 / 3.2
5Sam Suddath '26Blue and Gold10/100.630.71+0.0743rd → 46th0.071%5.0 / 4.6
6Shaler Mahan '27Rowland Hall10/100.26u-2.51−2.7729th → 1st6.697%5.8 / 4.9

Conditions — 09/27/2025 (8am–6pm)

☁️Overcast
Humidity 69%  ·  Pressure 1011.9 hPa

Temperature

72°F
↑ 74°F   ↓ 67°F
Feels like 73°F

Wind

● from   ▲ toward
5.4 kn
avg  ·  max 6.6 kn
Gusts to 18.7 kn
From SSE (152°)

Sky & Precipitation

Cloud cover58% Sunshine9.9 hrs Humidity69% Pressure1011.9 hPa

What this breeze does at San Pedro — from fleet racing

Breeze: SE about 8 kn (weather reanalysis in the scorer’s units)
In fleet races at San Pedro in this breeze: a typical day (+0.01)
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 ±0.01 means a rating gap counts about 1% more 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 San Pedro by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (no labelled days at San Pedro: 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 →