SEISA Match Race Championship

# SchoolTeam A TOT
1 Tulane University Tulane University Green Wave 1 1
2 University of Texas University of Texas Longhorns 2 2
3 Texas A&M University at Galveston Texas A&M University at Galveston Aggies 3 3
4 Rice University Rice University Owls 4 4
5 Texas A&M University Texas A&M University Aggies 5 5
SchoolTeam R1 TOT
Tulane University Tulane University Green Wave 1 1
University of Texas University of Texas Longhorns 2 2
Texas A&M University at Galveston Texas A&M University at Galveston Aggies 3 3
Rice University Rice University Owls 4 4
Texas A&M University Texas A&M University Aggies 5 5

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 keelboat rating rather than the fleet rating: 0.41 × the skipper's fleet rating from the week before the event (unrated skippers start at 0.47); 0.28 × the mean fleet rating of the rated crew aboard; the skipper's own keelboat offset; the school's program effect. Non-finishes (OCS, DNF and similar) are left out of the fitting, as in the rating model.

Percentile places a rating among the 207 ICSA sailors with a keelboat 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 keelboat 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.
  • — in the performance column: last in every race sailed, so no finite least-surprisal rating exists.

Division A  5 boats · 1 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Kelly Holthus '27Tulane University1/12.597.00++4.4199th → 99th0.848%1.0 / 1.9
2Johannes Lindegaard '26University of Texas1/10.69u2.61+1.9157th → 99th1.125%2.0 / 3.5
3William Tebrake '27Texas A&M University at Galveston1/11.161.46+0.3179th → 89th0.058%3.0 / 3.1
4Ricky Miller '26Rice University1/10.990.70−0.2973rd → 58th0.078%4.0 / 3.2
5Scott Mather '27Texas A&M University1/10.93——72nd → —2.0>99%5.0 / 3.3

Conditions — 09/14/2024 (8am–6pm)

☁️Overcast
Humidity 58%  ·  Pressure 1011.5 hPa

Temperature

89°F
↑ 95°F   ↓ 77°F
Feels like 96°F

Wind

● from   ▲ toward
5.4 kn
avg  ·  max 8.1 kn
Gusts to 15.2 kn
From S (181°)

Sky & Precipitation

Cloud cover97% Sunshine8.6 hrs Humidity58% Pressure1011.5 hPa

What this breeze does at Texas — from fleet racing

Breeze: S about 8 kn (weather reanalysis in the scorer’s units)
In fleet races at Texas in this breeze: a favourites’ day (+0.08)
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 ±0.08 means a rating gap counts about 7% 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 Texas by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (19 labelled fleet-race days at Texas).

From the notes

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

All notes →