Rosternomics
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January 21, 2011

ANATOR

TOR won this trade +$8.8M surplus ANA won this trade +1.0 WAR
ANAANA Jerry Dipoto net −$8.8M net +1.0
received +$1.6M+$1.6M ± $10M expected surplus · −$16.0M realized received 1.7 ± 1 expected · 0.6 realized WAR
Playoff odds: this deal moved ANA's 2011 odds 29% → 33% (+4 pts) — how trade timing is graded ↗
receives — most valuable first
Vernon WellsOF·32y·R/R
+$1.7M+$1.7M± $10M exp surplusrealized −$16.0M 1.7± 1 exp WARrealized 0.6
Prior
league baseline (track record outweighs draft pedigree) → 0.26/yr
Evidence
recent form 2.4/yr over 2.7 seasons
Talent
1.75/yr blended
Horizon
1.0 control yr
TORTOR Alex Anthopoulos net +$8.8M net -1.0
received +$16.0M+$16.0M ± $22M expected surplus · −$7.2M realized received 4.4 ± 3 expected · -0.4 realized WAR
Playoff odds: this deal moved TOR's 2011 odds 4% → 3% (-0.7 pts) — how trade timing is graded ↗
receives — most valuable first
Mike NapoliC/1B·29y·R/R
+$16.2M+$16.2M± $21M exp surplusrealized +$0.0M 3.6± 3 exp WARrealized 0.0
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 2.8/yr over 1.9 season
Talent
1.82/yr blended
Horizon
2.0 control yrs
Juan RiveraOF·32y·R/R
−$0.2M−$0.2M± $6M exp surplusrealized −$7.2M 0.8± 1 exp WARrealized -0.4
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.2/yr over 2.0 seasons
Talent
0.81/yr blended
Horizon
1.0 control yr

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.