Rosternomics
← Trade Database
November 7, 1997

NYYOAK

OAK won this trade +$40.8M surplus NYY won this trade +1.9 WAR
NYYNYY Bob Watson net −$40.8M net +1.9
received +$6.4M+$6.4M ± $18M expected surplus · +$28.8M realized received 2.4 ± 2 expected · 8.7 realized WAR
Playoff odds: this deal moved NYY's 1998 odds 97% → 98% (+0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Scott Brosius3B·31y·R/R
+$6.4M+$6.4M± $18M exp surplusrealized +$28.8M 2.4± 2 exp WARrealized 8.7
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 1.9/yr over 2.0 seasons
Talent
1.27/yr blended
Horizon
2.0 control yrs × 0.95 age decline
OAKOAK Sandy Alderson net +$40.8M net -1.9
received −$22.4M−$22.4M ± $14M expected surplus · +$69.6M realized received 1.8 ± 2 expected · 6.8 realized WAR
Playoff odds: this deal moved OAK's 1998 odds 1% → 1% (-0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Kenny RogersP·33y·L/L
−$22.2M−$22.2M± $14M exp surplusrealized +$69.6M 1.8± 2 exp WARrealized 6.8
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.7/yr over 2.7 seasons
Talent
1.27/yr blended
Horizon
1.5 control yr × 0.95 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.