Rosternomics
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April 14, 2017

BALSEA

BAL won this trade +$9.6M surplus BAL won this trade +2.0 WAR
BALBAL Dan Duquette net +$9.6M net +2.0
received +$0.8M+$0.8M ± $15M expected surplus · +$9.6M realized received 0.6 ± 2 expected · 2.0 realized WAR
receives — most valuable first
Paul FryP·24y·L/L
+$0.9M+$0.9M± $15M exp surplusrealized +$9.6M 0.6± 2 exp WARrealized 2.0
Prior
#507 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
3.0 control yrs
SEASEA Jerry Dipoto net −$9.6M net -2.0
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.