Rosternomics
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January 21, 2019

CINNYY

CIN won this trade +$116.8M surplus CIN won this trade +9.0 WAR
CINCIN Dick Williams net +$116.8M net +9.0
received +$17.6M+$17.6M ± $23M expected surplus · +$116.8M realized received 2.9 ± 3 expected · 9.0 realized WAR
Playoff odds: this deal moved CIN's 2019 odds 4% → 11% (+6.9 pts) — how trade timing is graded ↗
receives — most valuable first
Sonny GrayP·29y·R/R
+$16.2M+$16.2M± $11M exp surplusrealized +$116.8M 1.7± 1 exp WARrealized 8.7
Prior
league baseline (track record outweighs draft pedigree) → 0.36/yr
Evidence
recent form 2.3/yr over 2.4 seasons
Talent
1.65/yr blended
Horizon
1.0 control yr
Reiver SanmartinP·23y·L/L
+$1.8M+$1.8M± $20M exp surplusrealized +$0.0M 1.2± 2 exp WARrealized 0.3
Prior
no pedigree — 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 −$116.8M net -9.0
received +$1.6M+$1.6M ± $20M expected surplus · +$0.0M realized received 1.2 ± 2 expected · 0.0 realized WAR
Playoff odds: this deal moved NYY's 2019 odds 94% → 84% (-10 pts) — how trade timing is graded ↗
receives — most valuable first
Shed Long2B/OF·23y·L/R
+$1.8M+$1.8M± $20M exp surplusrealized +$0.0M 1.2± 2 exp WARrealized 0.0
Prior
#375 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

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.