Rosternomics
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July 20, 2016

CHCSEA

CHC won this trade +$8.8M surplus CHC won this trade +2.0 WAR
CHCCHC Theo Epstein net +$8.8M net +2.0
received +$5.6M+$5.6M ± $35M expected surplus · +$8.8M realized received 2.7 ± 4 expected · 2.2 realized WAR
Playoff odds: this deal moved CHC's 2016 odds 94% → 95% (+0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Mike MontgomeryP·26y·L/L
+$3.6M+$3.6M± $30M exp surplusrealized +$8.8M 1.5± 4 exp WARrealized 2.2
Prior
#36 overall draft pick → 0.27/yr
Evidence
recent form 0.3/yr over 0.5 season
Talent
0.29/yr blended
Horizon
5.5 control yrs × 0.96 age decline
Jordan PriesP·26y·S/R
+$1.8M+$1.8M± $19M exp surplusrealized +$0.0M 1.2± 2 exp WARrealized 0.0
Prior
#903 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
6.0 control yrs × 0.92 age decline
SEASEA Jerry Dipoto net −$8.8M net -2.0
received +$3.2M+$3.2M ± $26M expected surplus · +$0.0M realized received 2.4 ± 3 expected · 0.2 realized WAR
Playoff odds: this deal moved SEA's 2016 odds 31% → 30% (-0.8 pts) — how trade timing is graded ↗
receives — most valuable first
Dan Vogelbach1B/DH·23y·L/R
+$1.8M+$1.8M± $18M exp surplusrealized +$0.0M 1.2± 2 exp WARrealized 0.2
Prior
#68 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
5.5 control yrs
Paul BlackburnP·22y·R/R
+$1.8M+$1.8M± $18M exp surplusrealized +$0.0M 1.2± 2 exp WARrealized 0.0
Prior
#56 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
5.5 control yrs

Each player is valued on what he was expected to produce at the time of the trade, versus what he actually produced for his new team.

Expected WAR blends a player's pedigree (composite top-100 rank / draft slot, or a baseline) with his recent track record, projected over the years of team control acquired. The ± figure is a historically calibrated predictive standard deviation, measuring how widely comparable forecasts have missed around their expected value. Surplus values that production at the FA market price of a win (~$8M/WAR) minus salary — so cost-controlled players carry large surplus and expensive ones little, even at the same WAR. Who won is descriptive, not a skill claim: ~99% of a trade's outcome is unforeseeable at the time.