Rosternomics
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December 3, 2009

CHCOAK

CHC won this trade +$1.6M surplus CHC won this trade +0.4 WAR
CHCCHC Jim Hendry net +$1.6M net +0.4
received +$2.4M+$2.4M ± $30M expected surplus · −$1.6M realized received 2.1 ± 4 expected · -0.1 realized WAR
Playoff odds: this deal moved CHC's 2010 odds 3% → 4% (+0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Matthew SpencerLF·24y·L/L
+$2.3M+$2.3M± $23M exp surplusrealized +$0.0M 1.3± 3 exp WARrealized 0.0
Prior
#113 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
Ronny Morla
+$0.3M+$0.3M± $7M 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)
Jeff GrayP·28y·R/R
−$0.6M−$0.6M± $17M exp surplusrealized −$1.6M 0.6± 2 exp WARrealized -0.1
Prior
#967 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form 0.1/yr over 0.9 season
Talent
0.17/yr blended
Horizon
5.0 control yrs × 0.64 age decline
OAKOAK Billy Beane net −$1.6M net -0.4
received −$0.8M−$2.4M ± $25M expected surplus · −$3.2M realized received 0.6 ± 3 expected · -0.5 realized WAR
Playoff odds: this deal moved OAK's 2010 odds 15% → 14% (-1.2 pts) — how trade timing is graded ↗
receives — most valuable first
Aaron Miles2B·33y·B/R
+$0.0M−$1.7M± $10M exp surplusrealized +$0.0M 0.0± 1 exp WARrealized 0.0
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form -0.4/yr over 1.9 season
Talent
-0.17/yr blended
Horizon
1.5 control yr
Jake FoxOF·27y·R/R
−$0.6M−$0.6M± $22M exp surplusrealized −$3.2M 0.6± 3 exp WARrealized -0.5
Prior
#73 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form -0.0/yr over 0.6 season
Talent
0.13/yr blended
Horizon
5.0 control yrs × 0.85 age decline

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.