David Acheson

Crew Rating

Career: 50.47 percentile of ICSA crews
0.501.001.502.00N. Yu (10 races): +0.37N. YuM. Barrett (2 races): -0.22M. BarrettN. Yu (5 races): -0.18S. Sigel (4 races): -0.17Fall 2022: rating 0.68Fall 2022Minnetonka High SchoolE. Engebretson (20 races): +0.42E. EngebretsonN. Yu (1 races): +0.06N. YuSpring 2023: rating 1.34Spring 2023Minnetonka High SchoolJ. Brellenthin (12 races): -0.36J. BrellenthinE. Engebretson (2 races): +0.07E. EngebretsonFall 2023: rating 0.56Fall 2023Minnetonka High SchoolE. Engebretson (16 races): +0.18E. EngebretsonSpring 2024: rating 0.81Spring 2024Minnetonka High School
▲ 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 2024 Minnetonka High School 0.81 Rating 0.81; 90% range -2.1 to 3.7; team skipper average 1.06 57.85 34.62 9 of 13 16 Team page
Fall 2023 Minnetonka High School 0.56 Rating 0.56; 90% range -2.4 to 3.5; team skipper average 0.54 55.03 34.62 9 of 13 14 Team page
Spring 2023 Minnetonka High School 1.34 Rating 1.34; 90% range -1.4 to 4.1; team skipper average 1.21 72.69 43.75 5 of 8 22 Team page
Fall 2022 Minnetonka High School 0.68 Rating 0.68; 90% range -2.2 to 3.5; team skipper average 1.16 59.96 25.00 8 of 10 21 Team page

Team Race Rating

Rating Rank vs fleet rating Record
-0.09 (fleet -0.14) unranked (fewer than 30 matches as skipper, or not active) +0.00
about what the fleet rating predicts
as crew 10–20 (33%)
SeasonRegattas Skipper W–LCrew W–L
Spring 20241—5–4
Spring 20231—0–12
Spring 20221—5–4

Team race surprisal: regatta by regatta

Over 3 graded regattas (30 matches) the record is 10–20 against 12.1 wins the pre-event forecasts expected (−2.1). 0 regattas clearly above the rating (P ≤ 20%), 1 clearly below (P ≥ 80%); 4 bits of surprise in all.

DateRegattaRole Value Perf. RecordExp.
wins
Δ Surprise
(bits)
P(this good
or better)
2024-05-04MISSA Baker Qualifier 2024crew1.611.895–44.6+0.280.153%
2023-05-13LMSS Team Racecrew0.98-2.020–122.5≤−3.003.7>99%
2022-05-21Spring LMSS Team Race 2022crew0.840.855–45.0+0.010.063%

Regatta results

Regatta Role Div Races Avg Rating
Spring 2024 Team page Season
West Mallory Pre-Qualifier Crew A 2 2.5 +0.15
MISSA - Mallory Qualifier Crew B 6 9.2 -0.09
MISSA Baker Qualifier 2024 Crew TR 9 56% —
2024 MN State Champs Green Crew A 4 3.8 -0.06
2024 MN State Champs Gold Crew A 4 3.2 +0.18
Fall 2023 Team page Season
MISSA West Great Lakes Qualifier 2023 Crew A 2 3.0 +0.07
Art Johnson Crew A 12 8.0 -0.36
2023 Fall MN Conference #1 Skipper B 5 9.2 -0.67
Spring 2023 Team page Season
Phebe Corckran King Invitational Crew A 5 15.2 -0.22
MN State Champs 2023 Crew A 14 4.1 +0.79
West Mallory Pre-Qualifier Crew A, B 3 2.7 -0.10
LMSS Team Race Crew TR 15 0% —
Fall 2022 Team page Season
MISSA Great Lakes Championship Crew A 4 16.8 -0.17
Minnesota MSS Fall 2022 #3 Crew A 4 8.0 -0.16
Conference #1 Crew B 5 5.8 -0.18
Art Johnson Crew B 4 1.2 +0.33
2022 MN Fall Conference #2 Crew A 4 8.5 -0.03
Spring 2022 Team page Season
Spring LMSS Team Race 2022 Crew TR 18 50% —
MSS Conference #2 Crew B 5 1.6 —
MN Spring Conference #3 Crew B 8 2.0 —
MN Conference #1 Crew A 2 9.5 —
Minnesota Conference #4 Crew B 3 10.7 —
Fall 2021 Team page Season
MSS Conference #3 Crew B 2 3.5 —
MN Conference #1 Crew A 4 13.0 —

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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