Rosternomics
← Trade Database
May 30, 1990

MINSFG

MIN won this trade +$8.0M surplus MIN won this trade +1.0 WAR
MINMIN Andy MacPhail net +$8.0M net +1.0
received +$2.4M+$2.4M ± $33M expected surplus · +$0.0M realized received 1.3 ± 4 expected · 0.0 realized WAR
Playoff odds: this deal moved MIN's 1990 odds 3% → 3% (-0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Ed GustafsonP
+$2.3M+$2.3M± $33M exp surplusrealized +$0.0M 1.3± 4 exp WARrealized 0.0
Prior
#464 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
SFGSFG Al Rosen net −$8.0M net -1.0
received −$1.6M−$1.6M ± $28M expected surplus · −$8.0M realized received 0.6 ± 4 expected · -1.0 realized WAR
Playoff odds: this deal moved SFG's 1990 odds 8% → 9% (+0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Francisco OliverasP·27y·R/R
−$1.4M−$1.4M± $28M exp surplusrealized −$8.0M 0.6± 4 exp WARrealized -1.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form -0.1/yr over 0.4 season
Talent
0.15/yr blended
Horizon
5.5 control yrs × 0.74 age decline

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.