MCSA Match Race Championship

# SchoolTeam A TOT
1 University of Illinois University of Illinois Illini 1 1
2 University of Saint Thomas University of Saint Thomas Tommies 2 2
3 Northwestern University Northwestern University Wildcats 3 3
4 University of Minnesota University of Minnesota Gophers 4 4
5 Hope College Hope College Flying Dutchmen 5 5
6 University of Wisconsin University of Wisconsin Badgers 6 6
7 University of Chicago University of Chicago Maroons 7 7
8 Ohio State University Ohio State University Buckeyes 8 8
9 Purdue University Purdue University Boilermakers 9 9
SchoolTeam R1 TOT
University of Illinois University of Illinois Illini 1 1
University of Saint Thomas University of Saint Thomas Tommies 2 2
Northwestern University Northwestern University Wildcats 3 3
University of Minnesota University of Minnesota Gophers 4 4
Hope College Hope College Flying Dutchmen 5 5
University of Wisconsin University of Wisconsin Badgers 6 6
University of Chicago University of Chicago Maroons 7 7
Ohio State University Ohio State University Buckeyes 8 8
Purdue University Purdue University Boilermakers 9 9

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  9 boats · 1 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Christian Prendergast '28University of Illinois1/11.767.00++5.2494th → 99th2.220%1.0 / 3.7
2Greg Bittle '25University of Saint Thomas1/10.963.05+2.0972nd → 99th1.321%2.0 / 5.0
3Nicholas Chesemore '27Northwestern University1/11.472.15+0.6889th → 99th0.244%3.0 / 4.2
4Hayden Johansen '27University of Minnesota1/10.411.77+1.3743rd → 96th0.830%4.0 / 5.9
5Lucas Nykamp '29Hope College1/11.061.28+0.2276th → 85th0.059%5.0 / 4.8
6Seamus Hendrickson '25University of Wisconsin1/11.560.69−0.8791st → 57th0.583%6.0 / 4.0
7Eliot Hack '28University of Chicago1/10.620.48−0.1555th → 47th0.072%7.0 / 5.6
8Matei Meglic '27Ohio State University1/10.74-0.30−1.0461st → 5th0.789%8.0 / 5.3
9Christopher Draper '29Purdue University1/1-0.14——10th → —1.3>99%9.0 / 6.6

Conditions — 10/04/2025 (8am–6pm)

☀️Clear sky
Humidity 48%  ·  Pressure 1018.7 hPa

Temperature

80°F
↑ 86°F   ↓ 67°F
Feels like 79°F

Wind

● from   ▲ toward
6.7 kn
avg  ·  max 8.4 kn
Gusts to 21.8 kn
From SSW (204°)

Sky & Precipitation

Cloud cover8% Sunshine11.0 hrs Humidity48% Pressure1018.7 hPa

What this breeze does at Chicago — from fleet racing

Breeze: SW about 9 kn (weather reanalysis in the scorer’s units)
In fleet races at Chicago in this breeze: a favourites’ day (+0.02)
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 ±0.02 means a rating gap counts about 2% 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 Chicago by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (only 1 labelled days at Chicago, 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 →