Rosternomics
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August 12, 2000

WSNPIT

WSN won this trade +$1.6M surplus WSN won this trade +0.1 WAR
WSNWSN Jim Beattie net +$1.6M net +0.1
received +$1.6M+$1.6M ± $21M expected surplus · +$0.0M realized received 1.1 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved WSN's 2000 odds 1% → 1% (+0 pts) — how trade timing is graded ↗
receives — most valuable first
Jarrod Patterson3B·26y·L/R
+$1.3M+$1.3M± $21M exp surplusrealized +$0.0M 1.1± 3 exp WARrealized 0.0
Prior
#556 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 × 0.96 age decline
PITPIT Cam Bonifay net −$1.6M net -0.1
received +$0.0M+$0.0M ± $18M expected surplus · −$1.6M realized received 0.9 ± 2 expected · -0.1 realized WAR
Playoff odds: this deal moved PIT's 2000 odds 2% → 2% (-0 pts) — how trade timing is graded ↗
receives — most valuable first
Matt SkrmettaP·27y·B/R
+$0.2M+$0.2M± $18M exp surplusrealized −$1.6M 0.9± 2 exp WARrealized -0.1
Prior
#725 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 × 0.79 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.