Rosternomics
← Trade Database
April 3, 1987

OAKCHC

OAK won this trade +$125.6M surplus OAK won this trade +19.3 WAR
OAKOAK Sandy Alderson net +$125.6M net +19.3
received +$112.8M+$112.8M ± $45M expected surplus · +$125.6M realized received 7.9 ± 6 expected · 19.3 realized WAR
Playoff odds: this deal moved OAK's 1987 odds 13% → 26% (+12.3 pts) — how trade timing is graded ↗
receives — most valuable first
Dennis EckersleyP·32y·R/R
+$114.5M+$114.5M± $40M exp surplusrealized +$125.6M 7.7± 5 exp WARrealized 19.3
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 4.3/yr over 1.6 season
Talent
2.55/yr blended
Horizon
3.3 control yrs × 0.92 age decline
Dan Rohn2B/3B·31y·L/R
−$1.9M−$1.9M± $20M exp surplusrealized +$0.0M 0.2± 2 exp WARrealized 0.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form -1.1/yr over 0.0 season
Talent
0.17/yr blended
Horizon
3.9 control yrs × 0.31 age decline
CHCCHC Dallas Green net −$125.6M net -19.3
received +$0.8M+$0.8M ± $26M expected surplus · +$0.0M realized received 0.6 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved CHC's 1987 odds 6% → 3% (-3.1 pts) — how trade timing is graded ↗
receives — most valuable first
Dave Wilder
+$0.3M+$0.3M± $15M exp surplusrealized +$0.0M 0.2± 2 exp WARrealized 0.0
Unidentified minor-league throw-in — valued at the ~0.2 WAR base rate (most produce nothing)
Brian Guinn
+$0.3M+$0.3M± $15M exp surplusrealized +$0.0M 0.2± 2 exp WARrealized 0.0
Unidentified minor-league throw-in — valued at the ~0.2 WAR base rate (most produce nothing)
Mark Leonette
+$0.3M+$0.3M± $15M exp surplusrealized +$0.0M 0.2± 2 exp WARrealized 0.0
Unidentified minor-league throw-in — valued at the ~0.2 WAR base rate (most produce nothing)

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.