Rosternomics
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October 31, 2012

KCRANA

KCR won this trade +$19.2M surplus KCR won this trade +2.7 WAR
KCRKCR Dayton Moore net +$19.2M net +2.7
received +$5.6M+$5.6M ± $6M expected surplus · +$19.2M realized received 0.9 ± 1 expected · 2.7 realized WAR
Playoff odds: this deal moved KCR's 2013 odds 15% → 24% (+9.2 pts) — how trade timing is graded ↗
receives — most valuable first
Ervin SantanaP·30y·R/R
+$5.8M+$5.8M± $6M exp surplusrealized +$19.2M 0.9± 1 exp WARrealized 2.7
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.2/yr over 2.7 seasons
Talent
0.90/yr blended
Horizon
1.0 control yr
ANAANA Jerry Dipoto net −$19.2M net -2.7
received +$0.0M+$0.0M ± $6M expected surplus · +$0.0M realized received 0.2 ± 1 expected · 0.0 realized WAR
Playoff odds: this deal moved ANA's 2013 odds 16% → 9% (-6.4 pts) — how trade timing is graded ↗
receives — most valuable first
Brandon Sisk
+$0.3M+$0.3M± $6M exp surplusrealized +$0.0M 0.2± 1 exp WARrealized 0.0
Unidentified minor-league throw-in — valued at the ~0.2 WAR base rate (most produce nothing)

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.