Rosternomics
← Trade Database
July 30, 1990

CHWBAL

BAL won this trade +$4.8M surplus CHW won this trade +0.2 WAR
CHWCHW Larry Himes net −$4.8M net +0.2
received +$21.6M+$20.8M ± $14M expected surplus · −$12.0M realized received 2.7 ± 2 expected · -0.3 realized WAR
Playoff odds: this deal moved CHW's 1990 odds 19% → 20% (+0.9 pts) — how trade timing is graded ↗
receives — most valuable first
Phil BradleyOF·31y·R/R
+$21.8M+$21.0M± $14M exp surplusrealized −$12.0M 2.7± 2 exp WARrealized -0.3
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 2.7/yr over 2.5 seasons
Talent
1.87/yr blended
Horizon
1.5 control yr × 0.98 age decline
BALBAL Roland Hemond net +$4.8M net -0.2
received +$4.8M+$4.0M ± $14M expected surplus · −$7.2M realized received 1.6 ± 2 expected · -0.5 realized WAR
Playoff odds: this deal moved BAL's 1990 odds 5% → 5% (-0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Ron KittleDH/OF·32y·R/R
+$4.4M+$3.7M± $14M exp surplusrealized −$7.2M 1.6± 2 exp WARrealized -0.5
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 2.1/yr over 1.2 season
Talent
1.13/yr blended
Horizon
1.5 control yr × 0.95 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.