NE Match Racing Championship

# SchoolTeam A TOT
1 Yale University Yale University Bulldogs 1 1
2 Boston College Boston College Eagles 2 2
3 Tufts University Tufts University Jumbos 3 3
4 Dartmouth College Dartmouth College Big Green 4 4
5 Roger Williams University Roger Williams University Hawks 5 5
6 Boston University Boston University Terriers 6 6
7 Massachusetts Institute of Technology Massachusetts Institute of Technology Engineers 7 7
8 Salve Regina University Salve Regina University Seahawks 8 8
SchoolTeam R1 TOT
Yale University Yale University Bulldogs 1 1
Boston College Boston College Eagles 2 2
Tufts University Tufts University Jumbos 3 3
Dartmouth College Dartmouth College Big Green 4 4
Roger Williams University Roger Williams University Hawks 5 5
Boston University Boston University Terriers 6 6
Massachusetts Institute of Technology Massachusetts Institute of Technology Engineers 7 7
Salve Regina University Salve Regina University Seahawks 8 8
School Team Sailors
Boston College Boston College Eagles SkipperWilliam Bailey '15
CrewRaul Rios '16
CrewKatja Sertl '16
Boston University Boston University Terriers SkipperConnor Astwood '16
CrewBrendan Cook '16
CrewMargaret Swanson '16
Dartmouth College Dartmouth College Big Green SkipperCharles Lalumiere '17
CrewLizzie Guynn '16
CrewIan Storck '15
Massachusetts Institute of Technology Massachusetts Institute of Technology Engineers SkipperDavid Larson '16
CrewEthan Stark '18
CrewLaura Dunphy '15
Roger Williams University Roger Williams University Hawks SkipperHenry Vogel '15
CrewAbby Preston '15
CrewDirk Johnson '18
Salve Regina University Salve Regina University Seahawks SkipperCharles Welsh '18
CrewSean Beaulieu '18
CrewCatherine Corssen '15
Tufts University Tufts University Jumbos SkipperDuncan Swain '15
CrewJames Moody '16
CrewCaroline Ambros '17
Yale University Yale University Bulldogs SkipperIan Barrows '17
CrewGraham Landy '15
CrewMarly Isler '16

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  8 boats · 1 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Ian Barrows '17Yale University1/13.237.00++3.7799th → 99th1.730%1.0 / 3.0
2William Bailey '15Boston College1/12.744.07+1.3499th → 99th0.632%2.0 / 3.8
3Duncan Swain '15Tufts University1/12.213.29+1.0899th → 99th0.536%3.0 / 4.5
4Charles Lalumiere '17Dartmouth College1/12.702.55−0.1499th → 99th0.063%4.0 / 3.9
5Henry Vogel '15Roger Williams University1/11.992.19+0.1999th → 99th0.058%5.0 / 4.8
6Connor Astwood '16Boston University1/11.16u1.83+0.6779th → 97th0.250%6.0 / 5.9
7David Larson '16Massachusetts Institute of Technology1/12.150.95−1.2099th → 72nd1.089%7.0 / 4.5
8Charles Welsh '18Salve Regina University1/11.46——89th → —1.8>99%8.0 / 5.6

Conditions — 10/11/2014 (8am–6pm)

🌧️Slight rain
Humidity 84%  ·  Pressure 1018.7 hPa

Temperature

52°F
↑ 53°F   ↓ 52°F
Feels like 48°F

Wind

● from   ▲ toward
8.1 kn
avg  ·  max 9.4 kn
Gusts to 17.5 kn
From NE (41°)

Sky & Precipitation

Cloud cover100% Sunshine0.5 hrs Humidity84% Pressure1018.7 hPa Rain0.46 in

What this breeze does at Salve Regina — from fleet racing

Breeze: NE about 10 kn (weather reanalysis in the scorer’s units)
In fleet races at Salve Regina in this breeze: an underdogs’ day (−0.07)
Underdogs’ conditions: in fleet racing here the fleet bunches up and lower-rated boats beat the seeds more often than 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 ±0.07 means a rating gap counts about 6% less 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 Salve Regina by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (43 labelled fleet-race days at Salve Regina).

From the notes

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

All notes →