Rosternomics
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May 15, 2004

LADNYY

LAD won this trade +$2.4M surplus LAD won this trade +0.3 WAR
LADLAD Dan Evans net +$2.4M net +0.3
received +$0.8M+$0.8M ± $28M expected surplus · +$0.0M realized received 1.0 ± 4 expected · 0.1 realized WAR
Playoff odds: this deal moved LAD's 2004 odds 67% → 65% (-1.6 pts) — how trade timing is graded ↗
receives — most valuable first
Brian Myrow1B·27y·L/R
+$0.7M+$0.7M± $28M exp surplusrealized +$0.0M 1.0± 4 exp WARrealized 0.1
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 × 0.82 age decline
NYYNYY Brian Cashman net −$2.4M net -0.3
received +$2.4M+$2.4M ± $10M expected surplus · −$2.4M realized received 0.7 ± 1 expected · -0.2 realized WAR
Playoff odds: this deal moved NYY's 2004 odds 42% → 44% (+1.7 pts) — how trade timing is graded ↗
receives — most valuable first
Tanyon SturtzeP·33y·R/R
+$2.2M+$2.2M± $10M exp surplusrealized −$2.4M 0.7± 1 exp WARrealized -0.2
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 0.6/yr over 2.4 seasons
Talent
0.45/yr blended
Horizon
2.0 control yrs × 0.79 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.