Rosternomics
← Trade Database
February 15, 1988

KCRCIN

KCR won this trade +$31.2M surplus KCR won this trade +12.0 WAR
KCRKCR John Schuerholz net +$31.2M net +12.0
received +$0.8M+$0.8M ± $19M expected surplus · +$29.6M realized received 1.0 ± 2 expected · 12.0 realized WAR
Playoff odds: this deal moved KCR's 1988 odds 24% → 23% (-0.5 pts) — how trade timing is graded ↗
receives — most valuable first
Jeff MontgomeryP·26y·R/R
+$0.7M+$0.7M± $19M exp surplusrealized +$29.6M 1.0± 2 exp WARrealized 12.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 0.1/yr over 0.5 season
Talent
0.19/yr blended
Horizon
5.5 control yrs × 0.93 age decline
CINCIN Murray Cook net −$31.2M net -12.0
received +$1.6M+$1.6M ± $30M expected surplus · −$1.6M realized received 1.2 ± 4 expected · 0.0 realized WAR
Playoff odds: this deal moved CIN's 1988 odds 34% → 35% (+0.6 pts) — how trade timing is graded ↗
receives — most valuable first
Van SniderOF·24y·L/R
+$1.8M+$1.8M± $30M exp surplusrealized −$1.6M 1.2± 4 exp WARrealized -0.0
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

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.