Rosternomics
← Trade Database
July 31, 1987

TEXKCR

TEX won this trade +$1.6M surplus TEX won this trade +0.2 WAR
TEXTEX Tom Grieve net +$1.6M net +0.2
received +$2.4M+$2.4M ± $27M expected surplus · +$0.0M realized received 1.3 ± 3 expected · 0.0 realized WAR
receives — most valuable first
Rufus EllisP
+$2.3M+$2.3M± $27M exp surplusrealized +$0.0M 1.3± 3 exp WARrealized 0.0
Prior
#617 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
KCRKCR John Schuerholz net −$1.6M net -0.2
received −$0.8M−$0.8M ± $25M expected surplus · −$1.6M realized received 0.5 ± 3 expected · -0.2 realized WAR
receives — most valuable first
Dave OwenSS·29y·B/R
−$1.1M−$1.1M± $25M exp surplusrealized −$1.6M 0.5± 3 exp WARrealized -0.2
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 0.0/yr over 0.1 season
Talent
0.20/yr blended
Horizon
5.0 control yrs × 0.50 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.