Rosternomics
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December 22, 1997

HOUNYM

HOU won this trade +$123.2M surplus HOU won this trade +9.4 WAR
HOUHOU Gerry Hunsicker net +$123.2M net +9.4
received +$8.0M+$8.0M ± $23M expected surplus · +$121.6M realized received 1.7 ± 3 expected · 9.4 realized WAR
Playoff odds: this deal moved HOU's 1998 odds 88% → 94% (+6.4 pts) — how trade timing is graded ↗
receives — most valuable first
Carl EverettOF·27y·B/R
+$8.3M+$8.3M± $23M exp surplusrealized +$121.6M 1.7± 3 exp WARrealized 9.4
Prior
league baseline (track record outweighs draft pedigree) → 0.33/yr
Evidence
recent form 0.7/yr over 1.6 season
Talent
0.56/yr blended
Horizon
3.0 control yrs
NYMNYM Joe McIlvaine net −$123.2M net -9.4
received −$1.6M−$1.6M ± $10M expected surplus · −$1.6M realized received 0.0 ± 1 expected · 0.0 realized WAR
Playoff odds: this deal moved NYM's 1998 odds 21% → 10% (-10.6 pts) — how trade timing is graded ↗
receives — most valuable first
John HudekP·31y·B/R
−$1.5M−$1.5M± $10M exp surplusrealized −$1.6M 0.0± 1 exp WARrealized -0.0
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form -0.5/yr over 1.9 season
Talent
-0.23/yr blended
Horizon
2.0 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.