Rosternomics
← Trade Database
August 31, 2017

CHCSEA

SEA won this trade +$5.6M surplus CHC won this trade +0.0 WAR
CHCCHC Theo Epstein net −$5.6M net +0.0
received +$27.2M+$27.2M ± $27M expected surplus · −$5.6M realized received 3.5 ± 3 expected · 0.0 realized WAR
receives — most valuable first
Leonys MartínOF·29y·L/R
+$27.0M+$27.0M± $27M exp surplusrealized −$5.6M 3.5± 3 exp WARrealized -0.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 2.6/yr over 2.1 seasons
Talent
1.75/yr blended
Horizon
2.0 control yrs
SEASEA Jerry Dipoto net +$5.6M net +0.0
received +$0.0M+$0.0M ± $0M expected surplus · +$0.0M realized received 0.0 ± 0 expected · 0.0 realized WAR
receives — most valuable first
cash / PTBNL
+$0.0M+$0.0M± $0M exp surplusrealized +$0.0M 0.0± 0 exp WARrealized 0.0
Cash or player to be named — no projection

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.