Rosternomics
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August 4, 1988

NYMCHW

NYM won this trade +$3.2M surplus NYM won this trade +0.3 WAR
NYMNYM Frank Cashen net +$3.2M net +0.3
received +$2.4M+$2.4M ± $33M expected surplus · +$0.0M realized received 1.4 ± 4 expected · 0.0 realized WAR
Playoff odds: this deal moved NYM's 1988 odds 96% → 96% (-0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Mike Maksudian1B·22y·L/R
+$1.8M+$1.8M± $30M exp surplusrealized +$0.0M 1.2± 4 exp WARrealized 0.0
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
Vince Harris
+$0.3M+$0.3M± $14M exp surplusrealized +$0.0M 0.2± 2 exp WARrealized 0.0
Unidentified minor-league throw-in — valued at the ~0.2 WAR base rate (most produce nothing)
CHWCHW Larry Himes net −$3.2M net -0.3
received +$0.0M+$0.0M ± $54M expected surplus · −$3.2M realized received 1.7 ± 7 expected · -0.3 realized WAR
Playoff odds: this deal moved CHW's 1988 odds 0% → 0% (+0 pts) — how trade timing is graded ↗
receives — most valuable first
Steve Springer3B·27y·R/R
+$0.7M+$0.7M± $39M exp surplusrealized +$0.0M 1.0± 5 exp WARrealized 0.0
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 × 0.82 age decline
Tom McCarthyP·27y·R/R
−$0.8M−$0.8M± $36M exp surplusrealized −$3.2M 0.7± 4 exp WARrealized -0.3
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form -1.1/yr over 0.0 season
Talent
0.16/yr blended
Horizon
5.5 control yrs × 0.76 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.