Charlotte Costikyan

Rating History

Team Race Rating

Rating Rank vs fleet rating Record
2.38 (fleet 3.22) unranked (fewer than 30 matches as skipper, or not active) +0.05 ± 0.16
about what the fleet rating predicts
as skipper 60–48 (56%)
as crew 24–8 (75%)
SeasonRegattas Skipper W–LCrew W–L
Spring 2024849–39—
Spring 2023210–6—
Fall 202211–3—
Spring 20222—20–3
Fall 20211—4–5
1.922.12.22.3Spring 2023Spring 2024Franny Charles Women’s Team Race Regatta (2023-03-11): rating 2.00, fleet rating alone 2.03, offset -0.02; record 2-4 in this boatBrown Team Race Invite (2023-03-18): rating 1.97, fleet rating alone 2.03, offset -0.05; record 8-2 in this boatHarvard Women's Team Race (2024-03-02): rating 2.08, fleet rating alone 2.10, offset -0.03; record 4-1 in this boatJen Harris Women's Team Race (2024-03-09): rating 2.12, fleet rating alone 2.11, offset +0.01; record 2-0 in this boatJen Harris Women's Team Race (2024-03-09): rating 2.12, fleet rating alone 2.11, offset +0.01; record 4-2 in this boatWomen's SNETR (2024-03-16): rating 2.15, fleet rating alone 2.11, offset +0.03; record 8-4 in this boatThe Duplin Trophy (2024-03-23): rating 2.18, fleet rating alone 2.13, offset +0.05; record 1-2 in this boatThe Duplin Trophy (2024-03-23): rating 2.18, fleet rating alone 2.13, offset +0.05; record 3-3 in this boatDellenbaugh Women's Team Race Trophy (2024-03-30): rating 2.17, fleet rating alone 2.13, offset +0.04; record 3-2 in this boatDellenbaugh Women's Team Race Trophy (2024-03-30): rating 2.17, fleet rating alone 2.13, offset +0.04; record 4-5 in this boatYale Women's Team Race (2024-04-06): rating 2.18, fleet rating alone 2.14, offset +0.04; record 10-5 in this boatNEISA Women’s Team Race Champs/Legler Trophy (2024-04-13): rating 2.21, fleet rating alone 2.14, offset +0.07; record 3-4 in this boatNEISA Women’s Team Race Champs/Legler Trophy (2024-04-13): rating 2.21, fleet rating alone 2.14, offset +0.07; record 3-5 in this boatICSA Women's Team Race National Championship (2024-04-28): rating 2.20, fleet rating alone 2.15, offset +0.05; record 1-5 in this boatICSA Women's Team Race National Championship (2024-04-28): rating 2.20, fleet rating alone 2.15, offset +0.05; record 3-1 in this boatTeam race rating

Rating before each regatta driven (solid; dots green when the boat won 60% or more of its matches there, red under 40%) and what the fleet rating alone would give (dashed). The gap is the team race offset as it stood at the time. Hover a dot for the regatta; click to open it.

Team race surprisal: regatta by regatta

Over 13 graded regattas (138 matches) the record is 82–56 against 75.4 wins the pre-event forecasts expected (+6.6). 3 regattas clearly above the rating (P ≤ 20%), 5 clearly below (P ≥ 80%); 17 bits of surprise in all.

DateRegattaRole Value Perf. RecordExp.
wins
Δ Surprise
(bits)
P(this good
or better)
2024-04-28ICSA Women's Team Race National Championshipskipper2.732.864–63.7+0.130.056%
2024-04-13NEISA Women’s Team Race Champs/Legler Trophyskipper2.762.106–97.7−0.660.892%
2024-04-06Yale Women's Team Raceskipper2.693.5410–57.5+0.851.512%
2024-03-30Dellenbaugh Women's Team Race Trophyskipper2.552.987–75.9+0.430.335%
2024-03-23The Duplin Trophyskipper2.581.344–55.7−1.241.698%
2024-03-16Women's SNETRskipper2.612.978–47.3+0.360.245%
2024-03-09Jen Harris Women's Team Raceskipper2.713.396–25.2+0.670.441%
2024-03-02Harvard Women's Team Raceskipper2.524.504–12.6+1.981.816%
2023-03-18Brown Team Race Inviteskipper2.353.018–27.1+0.660.437%
2023-03-11Franny Charles Women’s Team Race Regattaskipper2.441.402–43.1−1.050.895%
2022-10-23Franklin Lane Trophyskipper2.451.091–32.0−1.361.096%
2022-04-02Jumbo Team Racecrew2.314.3018–312.2+1.997.9<1%
2021-10-30Dave Perry Team Racecrew2.842.204–55.3−0.640.690%

Regatta results

Regatta Role Div Races Avg Rating
Spring 2024 Team page Season
Yale Women's Team Race Women's Skipper TR 15 67% —
Women's SNETR Women's Skipper TR 12 67% —
Women's New England Fleet Race Championship Women's Skipper A 2 8.0 3.31
Women's Dinghy National Championship Women's Skipper B 3 7.0 4.15
Jen Harris Women's Team Race Women's Skipper TR 11 73% —
ICSA Women's Team Race National Championship Women's Skipper TR 11 46% —
Harvard Women's Team Race Women's Skipper TR 7 71% —
Eastern Women's National Semi-final Women's Skipper A 6 10.2 2.88
The Duplin Trophy Women's Skipper TR 12 42% —
Dellenbaugh Women's Team Race Trophy Women's Skipper TR 16 56% —
NEISA Women’s Team Race Champs/Legler Trophy Women's Skipper TR 14 36% —
Fall 2023 Team page Season
Yale Women's Regatta Women's Skipper B 12 7.2 3.48
Stu Nelson Women's Skipper A 12 5.4 4.16
Regis Trophy Women's Skipper B 9 8.9 1.99
NEISA Match Race Championship Keelboat Crew A 3 1.0 —
Mrs. Hurst Bowl Women's Skipper B 5 4.2 4.49
ICSA Match Race National Championship Keelboat Crew A 1 1.0 —
2023 Pine Trophy Keelboat Crew A 12 2.7 —
Spring 2023 Team page Season
Rhody the Riveter Women's Fleet Race Women's Skipper A 9 5.6 1.46
Oberg Trophy Skipper B 10 9.0 2.25
Franny Charles Women’s Team Race Regatta Women's Skipper TR 9 44% —
Emily Wick Women's Skipper A 14 7.2 3.04
Brown Team Race Invite Skipper TR 16 75% —
Fall 2022 Team page Season
Yale FJ Regatta Skipper A 6 7.5 3.34
Toni Deutsch '58 Regatta Women's Skipper A 14 9.9 3.16
Sister Esther Open Skipper A 6 5.5 3.79
The 25th Mrs. Hurst Bowl Women's Skipper B 14 8.9 3.03
Franklin Lane Trophy Skipper TR 4 25% —
CC Invite Trophy Skipper A 8 5.9 1.82
Spring 2022 Team page Season
Rhody the Riveter Women's Skipper B 8 4.8 2.26
MIT Team Race Invite Crew TR 8 75% —
Jumbo Team Race Crew TR 21 86% —
George Morris Trophy Skipper B 4 6.2 3.11
Emily Wick Trophy Women's Skipper A 15 6.7 3.31
Connecticut Valley Dinghy Championship Trophy Skipper A 12 7.2 2.84
Fall 2021 Team page Season
Toni Deutsch '58 Regatta Women's Skipper A 14 10.4 2.32
Regis Trophy Women's Skipper A 8 9.0 2.78
Oberg Trophy Skipper C 6 9.8 2.44
The 24th Mrs. Hurst Bowl Women's Skipper B 13 7.3 3.23
The George Warren Smith Trophy Skipper A 14 12.1 2.21
Dave Perry Team Race Crew TR 9 44% —

From the notes

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

All notes →