Rosternomics
← Trade Database
August 6, 2009

NYMWSN

WSN won this trade +$0.8M surplus NYM won this trade +0.0 WAR
NYMNYM Omar Minaya net −$0.8M net +0.0
received +$2.4M+$2.4M ± $20M expected surplus · −$0.8M realized received 1.5 ± 2 expected · 0.0 realized WAR
receives — most valuable first
Anderson Hernández2B/SS·26y·B/R
+$2.2M+$2.2M± $20M exp surplusrealized −$0.8M 1.5± 2 exp WARrealized 0.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 0.6/yr over 0.3 season
Talent
0.29/yr blended
Horizon
5.5 control yrs × 0.97 age decline
WSNWSN Michael Rizzo net +$0.8M net +0.0
received +$0.0M+$0.0M ± $7M expected surplus · +$0.0M realized received 0.2 ± 1 expected · 0.0 realized WAR
receives — most valuable first
Greg Veloz
+$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)

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.