Rosternomics
← Trade Database
November 22, 2013

BOSMIL

BOS won this trade +$0.8M surplus BOS won this trade +0.7 WAR
BOSBOS Ben Cherington net +$0.8M net +0.7
received +$0.8M+$0.8M ± $6M expected surplus · +$0.8M realized received 0.3 ± 1 expected · 0.7 realized WAR
Playoff odds: this deal moved BOS's 2014 odds 4% → 4% (+0.6 pts) — how trade timing is graded ↗
receives — most valuable first
Burke BadenhopP·31y·R/R
+$0.9M+$0.9M± $6M exp surplusrealized +$0.8M 0.3± 1 exp WARrealized 0.7
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 0.3/yr over 2.6 seasons
Talent
0.30/yr blended
Horizon
1.0 control yr
MILMIL Douglas Melvin net −$0.8M net -0.7
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 MIL's 2014 odds 9% → 8% (-1.2 pts) — how trade timing is graded ↗
receives — most valuable first
Luis Ortega
+$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.