Rosternomics
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March 27, 2009

SFGPHI

SFG won this trade +$2.4M surplus SFG won this trade +0.2 WAR
SFGSFG Brian Sabean net +$2.4M net +0.2
received +$5.6M+$5.6M ± $22M expected surplus · +$0.0M realized received 2.3 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved SFG's 2009 odds 25% → 26% (+1 pts) — how trade timing is graded ↗
receives — most valuable first
Ronny PaulinoC·28y·R/R
+$5.8M+$5.8M± $22M exp surplusrealized +$0.0M 2.3± 3 exp WARrealized 0.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.3/yr over 1.3 season
Talent
0.77/yr blended
Horizon
3.0 control yrs
PHIPHI Ruben Amaro net −$2.4M net -0.2
received −$0.8M−$0.8M ± $6M expected surplus · −$2.4M realized received 0.2 ± 1 expected · -0.2 realized WAR
Playoff odds: this deal moved PHI's 2009 odds 66% → 65% (-1.2 pts) — how trade timing is graded ↗
receives — most valuable first
Jack TaschnerP·31y·L/L
−$0.4M−$0.4M± $6M exp surplusrealized −$2.4M 0.2± 1 exp WARrealized -0.2
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 0.1/yr over 2.2 seasons
Talent
0.16/yr blended
Horizon
2.0 control yrs × 0.51 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.