Rosternomics
← Trade Database
August 28, 1988

ATLPIT

ATL won this trade +$12.0M surplus ATL won this trade +0.1 WAR
ATLATL Bobby Cox net +$12.0M net +0.1
received +$0.8M+$0.8M ± $46M expected surplus · −$8.8M realized received 1.0 ± 6 expected · -0.5 realized WAR
Playoff odds: this deal moved ATL's 1988 odds 0% → 0% (+0 pts) — how trade timing is graded ↗
receives — most valuable first
Tommy Gregg1B/OF·24y·L/L
+$0.7M+$0.7M± $46M exp surplusrealized −$8.8M 1.0± 6 exp WARrealized -0.5
Prior
#164 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form -0.2/yr over 0.1 season
Talent
0.19/yr blended
Horizon
5.5 control yrs
PITPIT Larry Doughty net −$12.0M net -0.1
received +$8.0M+$8.0M ± $19M expected surplus · −$20.8M realized received 2.6 ± 2 expected · -0.6 realized WAR
Playoff odds: this deal moved PIT's 1988 odds 29% → 28% (-1.3 pts) — how trade timing is graded ↗
receives — most valuable first
Ken Oberkfell2B/3B·32y·L/R
+$8.2M+$8.2M± $19M exp surplusrealized −$20.8M 2.6± 2 exp WARrealized -0.6
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.6/yr over 1.9 season
Talent
1.07/yr blended
Horizon
3.0 control yrs × 0.82 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.