Rosternomics
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August 24, 1995

OAKANA

OAK won this trade +$5.6M surplus OAK won this trade +0.4 WAR
OAKOAK Sandy Alderson net +$5.6M net +0.4
received +$2.4M+$2.4M ± $30M expected surplus · +$0.0M realized received 1.3 ± 4 expected · 0.0 realized WAR
Playoff odds: this deal moved OAK's 1995 odds 4% → 4% (+0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Demond SmithOF·22y·S/R
+$2.3M+$2.3M± $30M exp surplusrealized +$0.0M 1.3± 4 exp WARrealized 0.0
Prior
#168 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
ANAANA Bill Bavasi net −$5.6M net -0.4
received +$0.8M+$0.8M ± $7M expected surplus · −$5.6M realized received 0.8 ± 1 expected · -0.4 realized WAR
Playoff odds: this deal moved ANA's 1995 odds 63% → 62% (-0.6 pts) — how trade timing is graded ↗
receives — most valuable first
Mike Aldrete1B/OF·34y·L/L
+$0.4M+$0.4M± $7M exp surplusrealized −$5.6M 0.8± 1 exp WARrealized -0.4
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.0/yr over 1.4 season
Talent
0.63/yr blended
Horizon
1.5 control yr × 0.87 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.