Rosternomics
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June 25, 2013

ANANYM

ANA won this trade +$8.8M surplus ANA won this trade +1.7 WAR
ANAANA Jerry Dipoto net +$8.8M net +1.7
received +$8.8M+$8.8M ± $15M expected surplus · +$8.8M realized received 1.9 ± 2 expected · 1.7 realized WAR
Playoff odds: this deal moved ANA's 2013 odds 9% → 9% (+0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Collin CowgillOF·27y·R/L
+$9.0M+$9.0M± $15M exp surplusrealized +$8.8M 1.9± 2 exp WARrealized 1.7
Prior
#168 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form 1.0/yr over 0.4 season
Talent
0.40/yr blended
Horizon
5.0 control yrs × 0.95 age decline
NYMNYM Sandy Alderson net −$8.8M net -1.7
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 NYM's 2013 odds 18% → 18% (-0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Kyle Johnson
+$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.