High School Keelboat Invite

# SchoolTeam A TOT
1 Minnetonka High School Minnetonka High School Skippers 11 11
2 St. Ignatius College Prep, Chicago, IL St. Ignatius College Prep, Chicago, IL Wolfpack 21 21
3 Stillwater High School Stillwater High School Varsity 23 23
4 Hinsdale Central High School Hinsdale Central High School Varsity 25 25
5 Lake Forest High School Lake Forest High School Scouts 33 MRP 33 MRP
6 New Trier HS New Trier HS Trevian 34 34
SchoolTeam R1 R2 R3 R4 R5 R6 TOT
Minnetonka High School Minnetonka High School Skippers 2 2 1 1 4 1 11
St. Ignatius College Prep, Chicago, IL St. Ignatius College Prep, Chicago, IL Wolfpack 4 3 3 3 5 3 21
Stillwater High School Stillwater High School Varsity 3 4 5 5 2 4 23
Hinsdale Central High School Hinsdale Central High School Varsity DNS 6 4 2 1 5 25
Lake Forest High School Lake Forest High School Scouts 1 1 2 4 3 2 33 MRP
New Trier HS New Trier HS Trevian 5 5 6 6 6 6 34
School Team Sailors
Hinsdale Central High School Hinsdale Central High School Varsity SkipperMichael Phlamm '16
CrewDavid Phlamm '18
CrewAmanda Bronson '16
Lake Forest High School Lake Forest High School Scouts SkipperWilliam Curtiss '16
CrewConnor Sheridan '18
CrewNicholas Elsasser '18
CrewRiley McDonnell '16
Minnetonka High School Minnetonka High School Skippers SkipperConrad (Cort) Vandlik '17
CrewLizzy Holimann '16
CrewCarl Eaton '17
CrewMatthew Kickhafer '19
New Trier HS New Trier HS Trevian SkipperDylan Cotter '18
CrewClaire Pecard '17
CrewNathan Whisner '19
CrewWill Plovanic '19
St. Ignatius College Prep, Chicago, IL St. Ignatius College Prep, Chicago, IL Wolfpack SkipperMatthew Alfano '17
CrewNate Casale '17
CrewCaroline Sandoval '19
CrewSerena White '19
Stillwater High School Stillwater High School Varsity SkipperBrian Olson '18
CrewMaggie Raedeke '18
CrewJoe Sanderson '18
CrewLeigh Marker '17
ReserveOscar Nemitz '20Adam Tronnes '20Katie Wallace '18Peter Zajec '20

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 78 ISSA 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.

Division A  6 boats · 6 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Conrad (Cort) Vandlik '17Minnetonka High School6/61.612.45+0.8494th → 99th1.317%1.8 / 2.8
2William Curtiss '16Lake Forest High School6/61.332.14+0.8192nd → 99th1.421%2.2 / 3.1
3Matthew Alfano '17St. Ignatius College Prep, Chicago, IL6/60.791.21+0.4363rd → 88th0.546%3.5 / 3.7
4Brian Olson '18Stillwater High School6/60.461.01+0.5436th → 74th0.844%3.8 / 4.0
5Michael Phlamm '16Hinsdale Central High School6/60.520.81+0.2938th → 65th0.258%4.2 / 4.0
6Dylan Cotter '18New Trier HS6/61.03-1.84−2.8774th → 1st13.399%5.7 / 3.4

Conditions — 10/10/2015 (8am–6pm)

☁️Overcast
Humidity 64%  ·  Pressure 1020.3 hPa

Temperature

58°F
↑ 62°F   ↓ 50°F
Feels like 54°F

Wind

● from   ▲ toward
6.4 kn
avg  ·  max 8.6 kn
Gusts to 16.7 kn
From SSW (209°)

Sky & Precipitation

Cloud cover66% Sunshine11.0 hrs Humidity64% Pressure1020.3 hPa

What this breeze does at Hinsdale Central/New Trier HS/St. Ignatius College — from fleet racing

Breeze: SW about 9 kn (weather reanalysis in the scorer’s units)
In fleet races at Hinsdale Central/New Trier HS/St. Ignatius College in this breeze: a typical day (−0.00)
Nothing in this breeze favours either side in fleet racing here: results follow the ratings about as 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 ±0.00 means a rating gap counts about 1% 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 Hinsdale Central/New Trier HS/St. Ignatius College by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (no labelled days at Hinsdale Central/New Trier HS/St. Ignatius College: the all-venue pattern is shown).

From the notes

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

All notes →