Sydney Rosenberg

Rating History

Crew Rating

Career: 5.74 percentile of ICSA crews

Includes linked high school and college seasons.

-1.50-1.00-0.500.00S. Ellison (21 races): -1.11S. EllisonE. Degrazia (6 races): -0.41E. DegraziaR. Ellison (5 races): -0.35Spring 2024: rating -1.12Spring 2024Brother Rice High School - MIS. Ellison (21 races): -1.11S. EllisonE. Degrazia (6 races): -0.41E. DegraziaR. Ellison (5 races): -0.35Spring 2024: rating -0.89Spring 2024Birmingham Public SchoolsS. Ellison (11 races): +0.19S. EllisonFall 2024: rating -1.11Fall 2024Birmingham Public SchoolsS. Ellison (26 races): -0.19S. EllisonQ. Elliott (9 races): -0.13Q. ElliottSpring 2025: rating -1.46Spring 2025Mercy/University of Detroit JesuitS. Ellison (26 races): -0.19S. EllisonQ. Elliott (9 races): -0.13Q. ElliottSpring 2025: rating -0.81Spring 2025Birmingham Public SchoolsL. Messner (16 races): -0.16L. MessnerR. Ellison (11 races): -0.13R. EllisonFall 2025: rating -0.98Fall 2025Birmingham Public SchoolsR. Ellison (10 races): +0.49R. EllisonL. Messner (12 races): +0.20L. MessnerSpring 2026: rating -0.73Spring 2026Birmingham Public Schools
▲ boats did better with this crew than with the skipper's usual crews▼ worseArrow length = size of the push, in rating points
Season Team Rating Range League
percentile
Team
percentile
On team Races Team page
Spring 2026 Birmingham Public Schools -0.73 Rating -0.73; 90% range -3.4 to 2.0; team skipper average 0.43 12.60 18.75 7 of 8 22 Team page
Fall 2025 Birmingham Public Schools -0.98 Rating -0.98; 90% range -3.7 to 1.7; team skipper average -0.10 10.38 21.43 6 of 7 27 Team page
Spring 2025 Mercy/University of Detroit Jesuit -1.46 Rating -1.46; 90% range -4.1 to 1.2; team skipper average 0.46 3.45 21.43 6 of 7 9 Team page
Spring 2025 Birmingham Public Schools -0.81 Rating -0.81; 90% range -3.5 to 1.9; team skipper average 0.94 11.42 18.75 7 of 8 26 Team page
Fall 2024 Birmingham Public Schools -1.11 Rating -1.11; 90% range -3.8 to 1.6; team skipper average 0.06 8.64 18.75 7 of 8 19 Team page
Spring 2024 Brother Rice High School - MI -1.12 Rating -1.12; 90% range -3.8 to 1.6; team skipper average -0.29 7.42 6.25 8 of 8 11 Team page
Spring 2024 Birmingham Public Schools -0.89 Rating -0.89; 90% range -3.5 to 1.7; team skipper average -0.12 10.74 35.71 5 of 7 21 Team page

Singlehanded & Keelboat Ratings

DisciplineRating Rank RacesLast raced
Singlehanded-0.31unranked (fewer than 10 races or not active)5Fall 2024

Team Race Rating

Rating Rank vs fleet rating Record
-0.36 (fleet -0.58) unranked (fewer than 30 matches as skipper, or not active) −0.00 ± 0.18
about what the fleet rating predicts
as skipper 5–7 (42%)
as crew 7–2 (78%)
SeasonRegattas Skipper W–LCrew W–L
Spring 20261—7–2
Spring 202515–7—

Team race surprisal: regatta by regatta

Over 2 graded regattas (21 matches) the record is 12–9 against 12.1 wins the pre-event forecasts expected (−0.1). 0 regattas clearly above the rating (P ≤ 20%), 0 clearly below (P ≥ 80%); 0 bits of surprise in all.

DateRegattaRole Value Perf. RecordExp.
wins
Δ Surprise
(bits)
P(this good
or better)
2026-04-11MISSA NE Baker Pre-Qualifiercrew1.101.367–26.8+0.260.062%
2025-04-11MISSA NE Baker Pre Qualifierskipper-0.36-0.535–75.3−0.170.070%

Regatta results

Regatta Role Div Races Avg Rating
Spring 2026 Team page Season
MISSA NE Mallory Pre-Qualifier Crew B 12 2.6 +0.20
MISSA NE Baker Pre-Qualifier Crew TR 9 78% —
2026 MISSA NE Mother's Day Regatta Crew A 10 1.8 +0.49
Fall 2025 Team page Season
Turkey Leg Regatta Crew A 4 12.5 -0.37
MISSA Shepherd Championship Crew A, B 7 2.7 +0.22
MISSA NE Great Lakes Championships Crew B 5 6.0 -0.13
ISSA Great Oaks Invitational Silver Crew A 1 8.0 -0.02
ISSA Great Oaks Invitational Red Crew A 2 9.0 -0.08
CSS Kick Off Regatta Crew A 2 2.5 +0.15
2025 MISSA East Great Oaks Qualifier Crew A 6 6.3 -0.06
Spring 2025 Team page Season
MISSA NE Mallory Pre Qualifier Crew B 6 1.7 +0.30
MISSA NE Baker Pre Qualifier Skipper TR 12 42% —
MISSA Mallory Qualifier Crew B 8 14.0 -0.61
Foundry Spring #2 Crew B 1 3.0 +0.00
Bunny Hop Crew A 11 3.0 +0.12
Fall 2024 Team page Season
PYC #1 Skipper A 8 14.4 -0.39
MISSA Shepherd Championship Crew B 6 2.3 +0.33
Michigan State Laser ILCA 6 Championships Singlehanded Skipper A 5 8.4 -1.31
2024 Turkey Leg Regatta Crew B 3 5.7 -0.03
2024 double handed STATE CHAMPS / MISSA NE quali Crew A 10 8.3 -0.12
Spring 2024 Team page Season
PYC #2 Crew A 8 8.0 -0.64
Mother's Day Crew's Regatta Skipper A 7 6.9 -2.20
Bunny Hop Crew A 8 5.8 -0.64
2024 LP Classic Crew A 5 3.2 +0.17
Fall 2023 Team page Season
Shepherd Championship Crew A 6 7.3 +0.12
PYC #5 10/21/2023 Skipper A 10 8.3 1.09
Michigan State Laser Radial Championships Singlehanded Skipper A — — —

From the notes

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

All notes →

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