Rosternomics
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November 16, 2014

ATLCHC

ATL won this trade +$0.0M surplus ATL won this trade +0.3 WAR
ATLATL John Hart net +$0.0M net +0.3
received +$0.0M+$0.0M ± $22M expected surplus · +$4.0M realized received 0.6 ± 3 expected · 1.9 realized WAR
Playoff odds: this deal moved ATL's 2015 odds 0% → 0% (+0 pts) — how trade timing is graded ↗
receives — most valuable first
Arodys VizcaínoP·24y·R/R
+$0.2M+$0.2M± $22M exp surplusrealized +$4.0M 0.6± 3 exp WARrealized 1.9
Prior
Composite #83.0 pedigree (Baseball America #83 (2013)) — fell off 2 lists since, regressed — at the league baseline → 0.21/yr
Evidence
recent form -0.1/yr over 0.3 season
Talent
0.15/yr blended
Horizon
4.0 control yrs
CHCCHC Theo Epstein net +$0.0M net -0.3
received +$1.6M+$1.6M ± $30M expected surplus · +$4.0M realized received 1.2 ± 4 expected · 1.6 realized WAR
Playoff odds: this deal moved CHC's 2015 odds 85% → 83% (-1.9 pts) — how trade timing is graded ↗
receives — most valuable first
Tommy La Stella2B/3B·26y·L/R
+$1.7M+$1.7M± $30M exp surplusrealized +$4.0M 1.2± 4 exp WARrealized 1.6
Prior
#266 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form 0.3/yr over 0.6 season
Talent
0.23/yr blended
Horizon
5.0 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.