Rosternomics
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December 7, 1995

NYYSEA

NYY won this trade +$20.0M surplus NYY won this trade +17.9 WAR
NYYNYY Gene Michael net +$20.0M net +17.9
received +$26.4M+$26.4M ± $42M expected surplus · +$48.0M realized received 7.1 ± 5 expected · 20.7 realized WAR
Playoff odds: this deal moved NYY's 1996 odds 42% → 51% (+8.6 pts) — how trade timing is graded ↗
receives — most valuable first
Tino Martinez1B·28y·L/R
+$19.3M+$19.3M± $28M exp surplusrealized +$44.8M 4.3± 4 exp WARrealized 16.0
Prior
league baseline (track record outweighs draft pedigree) → 0.28/yr
Evidence
recent form 3.3/yr over 2.0 seasons
Talent
2.17/yr blended
Horizon
2.0 control yrs
Jeff NelsonP·29y·R/R
+$5.4M+$5.4M± $18M exp surplusrealized +$4.0M 1.6± 2 exp WARrealized 4.6
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.1/yr over 2.3 seasons
Talent
0.79/yr blended
Horizon
2.0 control yrs
Jim MecirP·26y·B/R
+$2.0M+$2.0M± $26M exp surplusrealized −$0.8M 1.2± 3 exp WARrealized 0.1
Prior
#84 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form 0.7/yr over 0.1 season
Talent
0.24/yr blended
Horizon
5.5 control yrs × 0.95 age decline
SEASEA Woody Woodward net −$20.0M net -17.9
received +$34.4M+$34.4M ± $45M expected surplus · +$28.0M realized received 6.4 ± 6 expected · 2.8 realized WAR
Playoff odds: this deal moved SEA's 1996 odds 87% → 82% (-4.5 pts) — how trade timing is graded ↗
receives — most valuable first
Sterling HitchcockP·25y·L/L
+$29.1M+$29.1M± $38M exp surplusrealized +$40.8M 4.3± 5 exp WARrealized 2.7
Prior
Composite #84.0 pedigree (Baseball America #84 (1994)) — fell off 2 lists since, regressed — at the league baseline → 0.21/yr
Evidence
recent form 1.8/yr over 1.5 season
Talent
1.08/yr blended
Horizon
4.0 control yrs
Russ Davis3B·26y·R/R
+$5.3M+$5.3M± $25M exp surplusrealized −$12.8M 2.1± 3 exp WARrealized 0.1
Prior
Composite #78.0 pedigree (Baseball America #78 (1995)) — fell off 1 list since, regressed → 0.24/yr
Evidence
recent form 1.1/yr over 0.3 season
Talent
0.40/yr blended
Horizon
5.5 control yrs × 0.98 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.