Rosternomics
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August 31, 2016

SEANYY

SEA won this trade +$9.6M surplus SEA won this trade +1.6 WAR
SEASEA Jerry Dipoto net +$9.6M net +1.6
received +$1.6M+$1.6M ± $18M expected surplus · +$9.6M realized received 1.2 ± 2 expected · 1.6 realized WAR
Playoff odds: this deal moved SEA's 2016 odds 31% → 30% (-0.5 pts) — how trade timing is graded ↗
receives — most valuable first
Ben GamelOF·24y·L/L
+$1.8M+$1.8M± $18M exp surplusrealized +$9.6M 1.2± 2 exp WARrealized 1.6
Prior
#325 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
5.5 control yrs
NYYNYY Brian Cashman net −$9.6M net -1.6
received +$2.4M+$2.4M ± $21M expected surplus · +$0.0M realized received 1.5 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved NYY's 2016 odds 14% → 14% (+0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Jio OrozcoP·18y·R/R
+$2.3M+$2.3M± $20M exp surplusrealized +$0.0M 1.3± 2 exp WARrealized 0.0
Prior
#425 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
6.0 control yrs
Juan De Paula
+$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.