Rosternomics
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April 29, 1993

SFGBAL

SFG won this trade +$0.0M surplus SFG won this trade +0.0 WAR
SFGSFG Bob Quinn net +$0.0M net +0.0
received −$4.0M−$4.0M ± $32M expected surplus · −$2.4M realized received 0.0 ± 4 expected · -0.4 realized WAR
Playoff odds: this deal moved SFG's 1993 odds 80% → 80% (+0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Luis MercedesOF·25y·R/R
−$3.7M−$3.7M± $32M exp surplusrealized −$2.4M 0.0± 4 exp WARrealized -0.4
Prior
Composite #80.0 pedigree (Baseball America #80 (1992)) — fell off 1 list since, regressed → 0.23/yr
Evidence
recent form -4.0/yr over 0.2 season
Talent
-0.47/yr blended
Horizon
5.0 control yrs
BALBAL Roland Hemond net +$0.0M net +0.0
received +$1.6M+$1.6M ± $30M expected surplus · −$2.4M realized received 1.2 ± 4 expected · -0.4 realized WAR
Playoff odds: this deal moved BAL's 1993 odds 53% → 53% (-0.5 pts) — how trade timing is graded ↗
receives — most valuable first
Kevin McGeheeP·24y·R/R
+$1.8M+$1.8M± $30M exp surplusrealized −$2.4M 1.2± 4 exp WARrealized -0.4
Prior
#224 overall draft pick — at the 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.