Rosternomics
← Trade Database
December 15, 2006

BOSANA

BOS won this trade +$0.0M surplus BOS won this trade +0.5 WAR
BOSBOS Jed Hoyer net +$0.0M net +0.5
received +$2.4M+$1.6M ± $7M expected surplus · +$0.0M realized received 0.7 ± 1 expected · 0.5 realized WAR
Playoff odds: this deal moved BOS's 2007 odds 81% → 83% (+1.8 pts) — how trade timing is graded ↗
receives — most valuable first
Brendan DonnellyP·35y·R/R
+$2.5M+$1.7M± $7M exp surplusrealized +$0.0M 0.7± 1 exp WARrealized 0.5
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 0.7/yr over 2.5 seasons
Talent
0.54/yr blended
Horizon
1.5 control yr × 0.86 age decline
ANAANA Bill Stoneman net +$0.0M net -0.5
received +$0.0M+$0.0M ± $21M expected surplus · +$0.0M realized received 0.6 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved ANA's 2007 odds 54% → 51% (-3 pts) — how trade timing is graded ↗
receives — most valuable first
Phil SeibelP·28y·L/L
+$0.2M+$0.2M± $21M exp surplusrealized +$0.0M 0.6± 3 exp WARrealized 0.0
Prior
#225 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form -1.4/yr over 0.0 season
Talent
0.17/yr blended
Horizon
4.0 control yrs × 0.80 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.