Rosternomics
← Trade Database
August 4, 2006

BALBOS

BAL won this trade +$20.8M surplus BAL won this trade +0.5 WAR
BALBAL Mike Flanagan net +$20.8M net +0.5
received −$0.8M−$0.8M ± $28M expected surplus · −$0.8M realized received 0.7 ± 4 expected · 0.0 realized WAR
Playoff odds: this deal moved BAL's 2006 odds 2% → 2% (+0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Adam SternOF·26y·L/R
−$0.8M−$0.8M± $28M exp surplusrealized −$0.8M 0.7± 4 exp WARrealized 0.0
Prior
#105 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form -0.2/yr over 0.2 season
Talent
0.13/yr blended
Horizon
5.5 control yrs × 0.93 age decline
BOSBOS Jed Hoyer net −$20.8M net -0.5
received +$3.2M+$2.4M ± $19M expected surplus · −$21.6M realized received 3.6 ± 2 expected · -0.5 realized WAR
Playoff odds: this deal moved BOS's 2006 odds 7% → 6% (-0.7 pts) — how trade timing is graded ↗
receives — most valuable first
Javy LópezC·35y·R/R
+$2.9M+$2.2M± $19M exp surplusrealized −$21.6M 3.6± 2 exp WARrealized -0.5
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 3.6/yr over 2.5 seasons
Talent
2.47/yr blended
Horizon
1.5 control yr × 0.96 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.