Rosternomics
← Trade Database
November 12, 2010

BOSMIA

BOS won this trade +$8.0M surplus BOS won this trade +2.0 WAR
BOSBOS Theo Epstein net +$8.0M net +2.0
received +$12.8M+$12.8M ± $30M expected surplus · +$8.0M realized received 2.0 ± 4 expected · 2.0 realized WAR
Playoff odds: this deal moved BOS's 2011 odds 91% → 90% (-0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Andrew MillerP·26y·L/L
+$12.7M+$12.7M± $30M exp surplusrealized +$8.0M 2.0± 4 exp WARrealized 2.0
Prior
#6 overall draft pick → 0.62/yr
Evidence
recent form 0.4/yr over 1.3 season
Talent
0.51/yr blended
Horizon
4.0 control yrs
MIAMIA Larry Beinfest net −$8.0M net -2.0
received −$4.0M−$4.0M ± $24M expected surplus · +$0.0M realized received 0.0 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved MIA's 2011 odds 5% → 5% (+0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Dustin RichardsonP·27y·L/L
−$3.7M−$3.7M± $24M exp surplusrealized +$0.0M 0.0± 3 exp WARrealized 0.0
Prior
#163 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form -0.3/yr over 0.9 season
Talent
-0.03/yr blended
Horizon
5.0 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.