Rosternomics
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July 30, 2011

PITBAL

BAL won this trade +$8.8M surplus PIT won this trade +0.9 WAR
PITPIT Neal Huntington net −$8.8M net +0.9
received +$0.8M+$0.8M ± $10M expected surplus · −$8.8M realized received 2.2 ± 1 expected · 0.9 realized WAR
Playoff odds: this deal moved PIT's 2011 odds 0% → 0% (+0 pts) — how trade timing is graded ↗
receives — most valuable first
Derrek Lee1B·35y·R/R
+$1.2M+$1.2M± $10M exp surplusrealized −$8.8M 2.2± 1 exp WARrealized 0.9
Prior
league baseline (track record outweighs draft pedigree) → 0.23/yr
Evidence
recent form 3.1/yr over 2.7 seasons
Talent
2.19/yr blended
Horizon
1.0 control yr
BALBAL Andy MacPhail net +$8.8M net -0.9
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 BAL's 2011 odds 0% → 0% (-0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Aaron Baker
+$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.