Rosternomics
← Trade Database
January 9, 2020

TBRHOU

TBR won this trade +$0.8M surplus TBR won this trade +0.2 WAR
TBRTBR Erik Neander net +$0.8M net +0.2
received +$3.2M+$3.2M ± $28M expected surplus · +$0.0M realized received 2.4 ± 4 expected · 0.0 realized WAR
receives — most valuable first
Peyton BattenfieldP·22y·R/R
+$1.8M+$1.8M± $20M exp surplusrealized +$0.0M 1.2± 2 exp WARrealized 0.0
Prior
#286 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
Cal StevensonOF·23y·L/L
+$1.8M+$1.8M± $20M exp surplusrealized +$0.0M 1.2± 2 exp WARrealized 0.0
Prior
#296 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
HOUHOU Jeff Luhnow net −$0.8M net -0.2
received +$0.0M+$0.0M ± $8M expected surplus · −$0.8M realized received 0.5 ± 1 expected · -0.2 realized WAR
receives — most valuable first
Austin PruittP·30y·R/R
−$0.3M−$0.3M± $8M exp surplusrealized −$0.8M 0.5± 1 exp WARrealized -0.2
Prior
#278 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form 0.4/yr over 1.4 season
Talent
0.31/yr blended
Horizon
4.4 control yrs × 0.37 age decline

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.