Rosternomics
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December 12, 2012

STLLAD

STL won this trade +$7.2M surplus STL won this trade +0.9 WAR
STLSTL John Mozeliak net +$7.2M net +0.9
received +$2.4M+$2.4M ± $21M expected surplus · +$0.0M realized received 1.3 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved STL's 2013 odds 53% → 58% (+5 pts) — how trade timing is graded ↗
receives — most valuable first
Jake LemmermanSS·24y·R/R
+$2.3M+$2.3M± $21M exp surplusrealized +$0.0M 1.3± 3 exp WARrealized 0.0
Prior
#172 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
6.0 control yrs
LADLAD Ned Colletti net −$7.2M net -0.9
received +$0.0M+$0.0M ± $6M expected surplus · −$7.2M realized received 0.5 ± 1 expected · -0.9 realized WAR
Playoff odds: this deal moved LAD's 2013 odds 80% → 77% (-3.5 pts) — how trade timing is graded ↗
receives — most valuable first
Skip Schumaker2B/OF·33y·L/R
−$0.2M−$0.2M± $6M exp surplusrealized −$7.2M 0.5± 1 exp WARrealized -0.9
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 0.6/yr over 2.2 seasons
Talent
0.48/yr blended
Horizon
1.0 control yr

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.