Rosternomics
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December 19, 2014

ANAKCR

ANA won this trade +$8.0M surplus ANA won this trade +2.1 WAR
ANAANA Jerry Dipoto net +$8.0M net +2.1
received −$1.6M−$1.6M ± $22M expected surplus · +$8.0M realized received 0.2 ± 3 expected · 2.1 realized WAR
Playoff odds: this deal moved ANA's 2015 odds 4% → 6% (+1.5 pts) — how trade timing is graded ↗
receives — most valuable first
Johnny Giavotella2B·27y·R/R
−$1.9M−$1.9M± $22M exp surplusrealized +$8.0M 0.2± 3 exp WARrealized 2.1
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form -0.4/yr over 0.4 season
Talent
0.06/yr blended
Horizon
4.0 control yrs
KCRKCR Dayton Moore net −$8.0M net -2.1
received +$0.8M+$0.8M ± $18M expected surplus · +$0.0M realized received 0.6 ± 2 expected · 0.0 realized WAR
Playoff odds: this deal moved KCR's 2015 odds 27% → 21% (-6.1 pts) — how trade timing is graded ↗
receives — most valuable first
Brian BroderickP·28y·R/R
+$0.9M+$0.9M± $18M exp surplusrealized +$0.0M 0.6± 2 exp WARrealized 0.0
Prior
#652 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form 0.1/yr over 0.1 season
Talent
0.20/yr blended
Horizon
3.0 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.