Rosternomics
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July 31, 2004

NYMTEX

NYM won this trade +$2.4M surplus NYM won this trade +0.1 WAR
NYMNYM Jim Duquette net +$2.4M net +0.1
received +$1.6M+$1.6M ± $22M expected surplus · +$0.0M realized received 1.2 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved NYM's 2004 odds 2% → 2% (+0 pts) — how trade timing is graded ↗
receives — most valuable first
Josh Hoffpauir2B·26y·L/R
+$1.8M+$1.8M± $22M exp surplusrealized +$0.0M 1.2± 3 exp WARrealized 0.0
Prior
#1651 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 × 0.92 age decline
TEXTEX John Hart net −$2.4M net -0.1
received +$4.0M+$4.0M ± $8M expected surplus · −$2.4M realized received 1.0 ± 1 expected · -0.1 realized WAR
Playoff odds: this deal moved TEX's 2004 odds 13% → 13% (-0.3 pts) — how trade timing is graded ↗
receives — most valuable first
Scott EricksonP·36y·R/R
+$3.6M+$3.6M± $8M exp surplusrealized −$2.4M 1.0± 1 exp WARrealized -0.1
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 1.7/yr over 1.3 season
Talent
0.97/yr blended
Horizon
1.1 control yr × 0.98 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.