MCSA Match Race Championship

# SchoolTeam A TOT
1 University of Chicago University of Chicago Maroons 1 1
2 Ohio State University Ohio State University Buckeyes 2 2
3 University of Wisconsin University of Wisconsin Badgers 3 3
4 University of Saint Thomas University of Saint Thomas Tommies 4 4
5 University of Michigan University of Michigan Wolverines 5 5
6 Purdue University Purdue University Boilermakers 6 6
SchoolTeam R1 TOT
University of Chicago University of Chicago Maroons 1 1
Ohio State University Ohio State University Buckeyes 2 2
University of Wisconsin University of Wisconsin Badgers 3 3
University of Saint Thomas University of Saint Thomas Tommies 4 4
University of Michigan University of Michigan Wolverines 5 5
Purdue University Purdue University Boilermakers 6 6
School Team Sailors
Ohio State University Ohio State University Buckeyes SkipperNadia Reynolds '25
CrewNick Robertson '27
CrewJohn Sullivan '25
Purdue University Purdue University Boilermakers SkipperJoseph Mowrey '25
CrewNok In Chan '25
CrewMathis Destouches '25
CrewCharlotte Bach '28
University of Chicago University of Chicago Maroons SkipperMax Zhalilo '26
CrewEliot Hack '28
CrewJames Leavitt '27
CrewIris Badezet Delory '27
University of Michigan University of Michigan Wolverines SkipperRiver Servia '27
CrewBryson DenUyl '24
CrewCaroline Grin '25
CrewEleanor Ervine '27
University of Saint Thomas University of Saint Thomas Tommies SkipperGreg Bittle '25
CrewAustin Shaw '27
CrewRakesh Dhiman '26
CrewGeorgia Green '28
University of Wisconsin University of Wisconsin Badgers SkipperSeamus Hendrickson '25
CrewDavid Tofer '24
CrewMaddy Netzer '26
CrewCarter Harms '27

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.

  • — in the performance column: last in every race sailed, so no finite least-surprisal rating exists.

Division A  6 boats · 1 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Max Zhalilo '26University of Chicago1/11.407.00++5.6088th → 99th1.729%1.0 / 2.7
2Nadia Reynolds '25Ohio State University1/10.342.28+1.9440th → 99th1.225%2.0 / 3.8
3Seamus Hendrickson '25University of Wisconsin1/11.201.17−0.0381st → 79th0.064%3.0 / 2.9
4Greg Bittle '25University of Saint Thomas1/10.960.48−0.4772nd → 49th0.177%4.0 / 3.2
5River Servia '27University of Michigan1/10.24-0.16−0.4036th → 10th0.176%5.0 / 4.0
6Joseph Mowrey '25Purdue University1/1-0.26——6th → —1.3>99%6.0 / 4.4

Conditions — 10/05/2024 (8am–6pm)

☀️Clear sky
Humidity 58%  ·  Pressure 1018.4 hPa

Temperature

71°F
↑ 79°F   ↓ 60°F
Feels like 67°F

Wind

● from   ▲ toward
11.5 kn
avg  ·  max 13.1 kn
Gusts to 26.0 kn
From SSE (154°)

Sky & Precipitation

Cloud cover24% Sunshine9.0 hrs Humidity58% Pressure1018.4 hPa

What this breeze does at Northwestern — from fleet racing

Breeze: SE about 13 kn (weather reanalysis in the scorer’s units)
In fleet races at Northwestern in this breeze: a strongly favourites’ day (+0.17)
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 ±0.17 means a rating gap counts about 15% 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 Northwestern by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (17 labelled fleet-race days at Northwestern).

From the notes

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

All notes →