Rosternomics
← Trade Database
December 12, 1985

DETSEA

SEA won this trade +$4.8M surplus DET won this trade +0.7 WAR
DETDET Bill Lajoie net −$4.8M net +0.7
received +$4.0M+$4.0M ± $24M expected surplus · −$6.4M realized received 1.7 ± 3 expected · 0.6 realized WAR
Playoff odds: this deal moved DET's 1986 odds 45% → 60% (+14.7 pts) — how trade timing is graded ↗
receives — most valuable first
Darnell Coles3B/OF·24y·R/R
+$3.9M+$3.9M± $24M exp surplusrealized −$6.4M 1.7± 3 exp WARrealized 0.6
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 0.9/yr over 0.2 season
Talent
0.30/yr blended
Horizon
5.5 control yrs
SEASEA Hal Keller net +$4.8M net -0.7
received +$1.6M+$1.6M ± $26M expected surplus · −$1.6M realized received 1.2 ± 3 expected · -0.1 realized WAR
Playoff odds: this deal moved SEA's 1986 odds 1% → 1% (-0.5 pts) — how trade timing is graded ↗
receives — most valuable first
Rich MonteleoneP·23y·R/R
+$1.8M+$1.8M± $26M exp surplusrealized −$1.6M 1.2± 3 exp WARrealized -0.1
Prior
no pedigree — 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.