Rosternomics
← Trade Database
August 31, 1997

MILNYM

NYM won this trade +$13.6M surplus MIL won this trade +0.1 WAR
MILMIL Sal Bando net −$13.6M net +0.1
received −$1.6M−$3.2M ± $15M expected surplus · −$13.6M realized received 1.5 ± 2 expected · 0.1 realized WAR
Playoff odds: this deal moved MIL's 1997 odds 4% → 4% (+0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Pete HarnischP·30y·B/R
−$1.8M−$2.9M± $15M exp surplusrealized −$13.6M 1.5± 2 exp WARrealized 0.1
Prior
league baseline (track record outweighs draft pedigree) → 0.28/yr
Evidence
recent form 1.4/yr over 2.3 seasons
Talent
1.05/yr blended
Horizon
1.5 control yr × 0.96 age decline
NYMNYM Joe McIlvaine net +$13.6M net -0.1
received +$0.0M−$0.8M ± $0M expected surplus · +$0.0M realized received 0.0 ± 0 expected · 0.0 realized WAR
Playoff odds: this deal moved NYM's 1997 odds 18% → 17% (-0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Donnie MooreP·43y·L/R
+$0.0M−$0.7M± $0M exp surplusrealized +$0.0M 0.0± 0 exp WARrealized 0.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 0.7/yr over 0.1 season
Talent
0.23/yr blended
Horizon
0.0 control yr

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.