2025 Michigan RADIAL STATE CHAMPS

SchoolSailor R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 TOT
Black River Public School Black River Public School Matthew Tevelde '26 2 1 2 1 1 1 1 2 2 1 1 1 16
Traverse City Central Traverse City Central Andrew Roeder '26 4 2 6 3 4 2 4 3 1 7 4 3 43
Zeeland High School Zeeland High School Cameron Bert '26 1 3 5 4 2 4 7 4 3 5 2 6 46
Black River Public School Black River Public School James Tevelde '29 6 5 3 2 3 3 2 1 5 2 DSQ 5 47
East Grand Rapids East Grand Rapids Sebastian Garcia '28 7 6 1 5 6 5 8 7 7 3 6 8 69
Forest Hills Eastern (MI) Forest Hills Eastern (MI) Oliver Vanderground '29 3 7 7 6 7 8 5 6 6 8 3 4 70
Black River Public School Black River Public School Henrik Bauman '27 5 4 4 7 8 7 6 9 4 6 5 7 72
Black River Public School Black River Public School Olive Mcgough '27 8 8 8 8 5 6 3 5 8 4 7 2 72
Traverse City West Traverse City West Will Velek '29 9 9 9 9 9 9 9 8 9 9 8 9 106

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 singlehanded rating rather than the fleet rating: 0.79 × the skipper's fleet rating from the week before the event (unrated skippers start at 1.11); the skipper's own singlehanded offset. Strength differences are scaled by 0.80 before they become probabilities, the value that calibrates the model on seasons it had not seen. Non-finishes (OCS, DNF and similar) are left out of the fitting, as in the rating model.

Percentile places a rating among the 495 ISSA sailors with a singlehanded 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 singlehanded 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  9 boats · 12 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Matthew Tevelde '26Black River Public School Varsity 112/122.744.68+1.9495th → 99th6.21%1.3 / 2.7
2Andrew Roeder '26Traverse City Central12/121.151.76+0.6163rd → 79th1.323%3.6 / 4.6
3Cameron Bert '26Zeeland High School12/121.651.51−0.1476th → 73rd0.150%3.8 / 3.9
4James Tevelde '29Black River Public School Varsity 212/121.201.93+0.7365th → 82nd1.634%3.9 / 4.5
5Sebastian Garcia '28East Grand Rapids12/120.350.33−0.0332nd → 31st0.056%5.8 / 5.6
6Oliver Vanderground '29Forest Hills Eastern (MI)12/120.660.31−0.3545th → 31st0.570%5.8 / 5.2
7Henrik Bauman '27Black River Public School Varsity 312/120.610.17−0.4442nd → 26th0.873%6.0 / 5.2
7Olive Mcgough '27Black River Public School Varsity 412/120.11-0.11−0.2325th → 19th0.255%6.0 / 5.8
9Will Velek '29Traverse City West12/12-1.43-3.78−2.351st → 1st4.998%8.8 / 7.5

Conditions — 10/11/2025 (8am–6pm)

🌤️Mainly clear
Humidity 73%  ·  Pressure 1021.6 hPa

Temperature

58°F
↑ 60°F   ↓ 53°F
Feels like 54°F

Wind

● from   ▲ toward
7.2 kn
avg  ·  max 9.8 kn
Gusts to 19.0 kn
From NE (38°)

Sky & Precipitation

Cloud cover63% Sunshine9.8 hrs Humidity73% Pressure1021.6 hPa

What this breeze does at Traverse City Centra/Traverse City West — from fleet racing

Breeze: NE about 10 kn (weather reanalysis in the scorer’s units)
In fleet races at Traverse City Centra/Traverse City West 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 Traverse City Centra/Traverse City West by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (only 2 labelled days at Traverse City Centra/Traverse City West, 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 →