Rosternomics
← Trade Database
April 22, 1997

NYYSDP

SDP won this trade +$31.2M surplus NYY won this trade +0.7 WAR
NYYNYY Bob Watson net −$31.2M net +0.7
received +$3.2M+$3.2M ± $42M expected surplus · −$16.8M realized received 3.4 ± 5 expected · 3.5 realized WAR
Playoff odds: this deal moved NYY's 1997 odds 77% → 76% (-1.5 pts) — how trade timing is graded ↗
receives — most valuable first
Vernon MaxwellCF·20y·R/R
+$2.3M+$2.3M± $28M exp surplusrealized +$0.0M 1.3± 4 exp WARrealized 0.0
Prior
#50 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
6.0 control yrs
Homer Bush2B·24y·R/R
+$1.8M+$1.8M± $26M exp surplusrealized −$0.8M 1.2± 3 exp WARrealized 0.3
Prior
#185 overall draft pick — at the league baseline → 0.21/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.21/yr blended
Horizon
5.5 control yrs
Gordie Amerson
+$0.3M+$0.3M± $5M exp surplusrealized +$0.0M 0.2± 1 exp WARrealized 0.0
Unidentified minor-league throw-in — valued at the ~0.2 WAR base rate (most produce nothing)
Hideki IrabuP·28y·R/R
−$0.8M−$0.8M± $16M exp surplusrealized −$16.0M 0.7± 2 exp WARrealized 3.2
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 × 0.61 age decline
SDPSDP Kevin Towers net +$31.2M net -0.7
received +$82.4M+$82.4M ± $42M expected surplus · +$14.4M realized received 11.2 ± 5 expected · 2.8 realized WAR
Playoff odds: this deal moved SDP's 1997 odds 1% → 1% (+0 pts) — how trade timing is graded ↗
receives — most valuable first
Rubén RiveraOF·23y·R/R
+$73.1M+$73.1M± $34M exp surplusrealized +$14.4M 8.5± 4 exp WARrealized 2.8
Prior
Composite #9.0 pedigree (Baseball America #9 (1997)) → 1.12/yr
Evidence
recent form 3.1/yr over 0.3 season
Talent
1.55/yr blended
Horizon
5.5 control yrs
Rafael MedinaP·22y·R/R
+$9.2M+$9.2M± $26M exp surplusrealized +$0.0M 2.7± 3 exp WARrealized 0.0
Prior
Composite #64.0 prospect (Baseball America #64 (1997)) → 0.48/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.48/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.