Rosternomics
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August 28, 2006

BOSCIN

BOS won this trade +$0.0M surplus BOS won this trade +0.1 WAR
BOSBOS Jed Hoyer net +$0.0M net +0.1
received −$4.0M−$4.0M ± $17M expected surplus · +$0.0M realized received 0.0 ± 2 expected · 0.1 realized WAR
Playoff odds: this deal moved BOS's 2006 odds 6% → 6% (+0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Mike BurnsP·27y·R/R
−$3.7M−$3.7M± $17M exp surplusrealized +$0.0M 0.0± 2 exp WARrealized 0.1
Prior
#907 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form -0.3/yr over 0.9 season
Talent
0.01/yr blended
Horizon
5.0 control yrs × 0.80 age decline
CINCIN Dan O'Brien net +$0.0M net -0.1
received +$0.8M+$0.8M ± $27M expected surplus · +$0.0M realized received 1.0 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved CIN's 2006 odds 17% → 17% (-0.5 pts) — how trade timing is graded ↗
receives — most valuable first
Tim BausherP·27y·R/R
+$0.7M+$0.7M± $27M exp surplusrealized +$0.0M 1.0± 3 exp WARrealized 0.0
Prior
#819 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 × 0.76 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.