Rosternomics
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December 13, 2018 · 3-team trade

TBRSEACLE

TBR won this trade +$186.4M surplus TBR won this trade +22.4 WAR
TBRTBR Erik Neander net +$186.4M net +22.4
received +$4.0M+$4.0M ± $32M expected surplus · +$180.8M realized received 2.3 ± 4 expected · 21.4 realized WAR
Playoff odds: this deal moved TBR's 2019 odds 79% → 87% (+7.6 pts) — how trade timing is graded ↗
receives — most valuable first
Yandy Díaz1B/3B/DH·27y·R/R
+$5.5M+$5.5M± $30M exp surplusrealized +$176.0M 1.8± 4 exp WARrealized 20.2
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 0.8/yr over 0.5 season
Talent
0.37/yr blended
Horizon
5.5 control yrs × 0.89 age decline
Cole SulserP·29y·R/R
−$1.1M−$1.1M± $12M exp surplusrealized +$4.8M 0.5± 2 exp WARrealized 1.2
Prior
#741 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
5.0 control yrs × 0.47 age decline
SEASEA Jerry Dipoto net −$14.4M net -4.5
received +$11.2M+$11.2M ± $11M expected surplus · +$8.0M realized received 1.9 ± 1 expected · 1.5 realized WAR
Playoff odds: this deal moved SEA's 2019 odds 2% → 1% (-1.1 pts) — how trade timing is graded ↗
receives — most valuable first
Edwin Encarnación1B/3B/DH·36y·R/R
+$11.0M+$11.0M± $11M exp surplusrealized +$8.0M 1.9± 1 exp WARrealized 1.5
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 2.7/yr over 2.7 seasons
Talent
1.94/yr blended
Horizon
1.0 control yr
CLECLE Chris Antonetti net −$172.0M net -17.9
received +$11.2M+$11.2M ± $33M expected surplus · +$16.8M realized received 2.9 ± 4 expected · 5.0 realized WAR
Playoff odds: this deal moved CLE's 2019 odds 66% → 70% (+4 pts) — how trade timing is graded ↗
receives — most valuable first
Carlos Santana1B·33y·B/R
+$9.9M+$9.9M± $11M exp surplusrealized +$22.4M 1.8± 1 exp WARrealized 6.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 2.5/yr over 2.8 seasons
Talent
1.84/yr blended
Horizon
1.0 control yr
Jake Bauers1B/OF·23y·L/L
+$1.3M+$1.3M± $31M exp surplusrealized −$5.6M 1.1± 4 exp WARrealized -1.0
Prior
Composite #54.5 pedigree (Baseball America #45 (2018) / MLB Pipeline #64 (2018)) — fell off 1 list since, regressed → 0.26/yr
Evidence
recent form 0.1/yr over 0.6 season
Talent
0.19/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.