Rosternomics
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February 28, 2006

ANAARI

ANA won this trade +$3.2M surplus ANA won this trade +1.2 WAR
ANAANA Bill Stoneman net +$3.2M net +1.2
received +$6.4M+$6.4M ± $18M expected surplus · −$4.8M realized received 2.1 ± 2 expected · 0.0 realized WAR
Playoff odds: this deal moved ANA's 2006 odds 32% → 33% (+0.6 pts) — how trade timing is graded ↗
receives — most valuable first
Jason BulgerP·27y·R/R
+$6.5M+$6.5M± $18M exp surplusrealized −$4.8M 2.1± 2 exp WARrealized 0.0
Prior
#22 overall draft pick → 0.50/yr
Evidence
recent form 0.2/yr over 0.3 season
Talent
0.44/yr blended
Horizon
5.5 control yrs × 0.88 age decline
ARIARI Josh Byrnes net −$3.2M net -1.2
received +$1.6M+$1.6M ± $22M expected surplus · −$8.0M realized received 1.2 ± 3 expected · -1.2 realized WAR
Playoff odds: this deal moved ARI's 2006 odds 6% → 6% (-0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Alberto Callaspo2B/3B·23y·B/R
+$1.8M+$1.8M± $22M exp surplusrealized −$8.0M 1.2± 3 exp WARrealized -1.2
Prior
Composite #71.0 prospect (Baseball America #71 (2004)) — fell off 2 lists since, regressed — 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

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.