ISSA 2025 Cressy Singlehanded Champs ILCA 6 Boys

SchoolSailor R1 R2 R3 R4 R5 R6 R7 R8 R9 TOT
School for Advanced Studies School for Advanced Studies David Coates '27 3 3 3 3 1 4 2 1 1 21
Lucy Beckham High School Lucy Beckham High School James Pine '26 4 11 1 1 2 1 3 4 DSQ 40
Point Loma High School Point Loma High School Oscar Parzen '26 8 5 2 7 7 2 5 2 6 44
Mater Dei High School Mater Dei High School Gage Christopher '28 5 1 5 5 5 11 1 3 10 46
Christchurch School Christchurch School Elliott Lipp '26 1 9 8 2 3 6 4 6 8 47
Brunswick School Brunswick School Sebastian Sheppard '27 2 8 4 10 4 7 6 RDG 3 50
Tabor Academy Tabor Academy Che Liu '29 6 4 10 4 9 9 7 11 4 64
Arrowhead High School Arrowhead High School Nicholas Berkowitz '28 10 6 7 9 6 5 11 5 5 64
Bayshore Christian School Bayshore Christian School Joe Comer '26 9 2 11 8 8 3 10 7 7 65
Pewaukee High School Pewaukee High School William Utz '28 7 7 6 12 10 12 12 9 2 77
Christchurch School Christchurch School Aaron Griffith '27 11 12 9 6 12 10 8 10 11 89
Roosevelt High School Roosevelt High School Ethan Lee '28 12 10 12 11 11 8 9 8 9 90

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  12 boats · 9 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1David Coates '27School for Advanced Studies9/93.42u5.30+1.8899th → 99th7.23%2.3 / 5.4
2James Pine '26Lucy Beckham High School9/94.083.98−0.1199th → 99th0.060%4.4 / 4.2
3Oscar Parzen '26Point Loma High School9/93.393.50+0.1199th → 99th0.039%4.9 / 5.4
4Gage Christopher '28Mater Dei High School9/92.673.06+0.3895th → 99th0.423%5.1 / 6.6
5Elliott Lipp '26Christchurch School Seahorses 19/93.003.34+0.3598th → 99th0.435%5.2 / 6.1
6Sebastian Sheppard '27Brunswick School9/93.173.25+0.0899th → 99th0.064%6.3 / 5.8
7Che Liu '29Tabor Academy9/92.482.35−0.1392nd → 89th0.152%7.1 / 7.0
7Nicholas Berkowitz '28Arrowhead High School9/92.772.59−0.1796th → 93rd0.164%7.1 / 6.5
9Joe Comer '26Bayshore Christian School9/92.172.53+0.3685th → 92nd0.443%7.2 / 7.5
10William Utz '28Pewaukee High School9/91.951.55−0.3982nd → 74th0.465%8.6 / 7.9
11Aaron Griffith '27Christchurch School Seahorses 29/92.061.22−0.8383rd → 65th2.090%9.9 / 7.7
12Ethan Lee '28Roosevelt High School9/92.071.39−0.6884th → 69th1.491%10.0 / 7.7

Conditions — 11/01/2025 (8am–6pm)

☀️Clear sky
Humidity 59%  ·  Pressure 1019.0 hPa

Temperature

56°F
↑ 62°F   ↓ 45°F
Feels like 52°F

Wind

● from   ▲ toward
2.9 kn
avg  ·  max 4.0 kn
Gusts to 10.5 kn
From WSW (258°)

Sky & Precipitation

Cloud cover0% Sunshine10.2 hrs Humidity59% Pressure1019.0 hPa

What this breeze does at Old Dominion University — from fleet racing

Breeze: W about 6 kn (weather reanalysis in the scorer’s units)
In fleet races at Old Dominion University in this breeze: a favourites’ day (+0.10)
Favourites’ conditions: in fleet racing here the results follow the ratings more closely than usual, and the top seeds hold their places.

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 ±0.10 means a rating gap counts about 8% 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 Old Dominion University by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (only 2 labelled days at Old Dominion University, so the surface is mostly the all-venue pattern).

From the notes

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

All notes →