Rosternomics
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December 15, 2002 · 4-team trade

OAKCINARITOR

ARI won this trade +$22.4M surplus OAK won this trade +4.3 WAR
OAKOAK Billy Beane net +$1.6M net +4.3
received +$16.8M+$16.8M ± $41M expected surplus · +$1.6M realized received 5.3 ± 5 expected · 4.3 realized WAR
Playoff odds: this deal moved OAK's 2003 odds 13% → 19% (+5.1 pts) — how trade timing is graded ↗
receives — most valuable first
Erubiel Durazo1B/DH·29y·L/L
+$16.9M+$16.9M± $41M exp surplusrealized +$1.6M 5.3± 5 exp WARrealized 4.3
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 2.6/yr over 1.2 season
Talent
1.41/yr blended
Horizon
4.0 control yrs × 0.94 age decline
CINCIN Jim Bowden net −$5.6M net +2.0
received +$8.0M+$8.0M ± $31M expected surplus · +$18.4M realized received 2.4 ± 4 expected · 5.4 realized WAR
Playoff odds: this deal moved CIN's 2003 odds 1% → 0% (-0.4 pts) — how trade timing is graded ↗
receives — most valuable first
Felipe López2B/SS·23y·B/R
+$7.7M+$7.7M± $31M exp surplusrealized +$18.4M 2.4± 4 exp WARrealized 5.4
Prior
league baseline (track record outweighs draft pedigree) → 0.23/yr
Evidence
recent form 0.8/yr over 0.8 season
Talent
0.47/yr blended
Horizon
5.0 control yrs
ARIARI Joe Garagiola net +$22.4M net -0.9
received −$0.8M−$0.8M ± $16M expected surplus · +$24.0M realized received 2.0 ± 2 expected · 3.4 realized WAR
Playoff odds: this deal moved ARI's 2003 odds 9% → 11% (+1.7 pts) — how trade timing is graded ↗
receives — most valuable first
Elmer DessensP·32y·R/R
−$0.5M−$0.5M± $16M exp surplusrealized +$24.0M 2.0± 2 exp WARrealized 3.4
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 2.0/yr over 2.3 seasons
Talent
1.40/yr blended
Horizon
1.5 control yr × 0.96 age decline
TORTOR JP Ricciardi net −$18.4M net -5.4
received +$8.0M+$8.0M ± $23M expected surplus · +$0.0M realized received 2.5 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved TOR's 2003 odds 11% → 14% (+2.5 pts) — how trade timing is graded ↗
receives — most valuable first
Jason Arnold#97P·24y·R/R
+$8.3M+$8.3M± $23M exp surplusrealized +$0.0M 2.5± 3 exp WARrealized 0.0
Prior
Composite #97.0 prospect (Baseball America #97 (2003)) → 0.42/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.42/yr blended
Horizon
6.0 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.