Rosternomics
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July 30, 2021

CHCNYM

CHC won this trade +$168.8M surplus CHC won this trade +13.9 WAR
CHCCHC Jed Hoyer net +$168.8M net +13.9
received +$11.2M+$11.2M ± $42M expected surplus · +$190.4M realized received 3.1 ± 5 expected · 17.2 realized WAR
Playoff odds: this deal moved CHC's 2021 odds 2% → 1% (-1.1 pts) — how trade timing is graded ↗
receives — most valuable first
Pete Crow-ArmstrongOF·19y·L/L
+$10.9M+$10.9M± $42M exp surplusrealized +$190.4M 3.1± 5 exp WARrealized 17.2
Prior
#19 overall draft pick → 0.57/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.57/yr blended
Horizon
5.5 control yrs
NYMNYM Sandy Alderson net −$168.8M net -13.9
received +$28.8M+$28.8M ± $18M expected surplus · +$21.6M realized received 4.3 ± 2 expected · 3.3 realized WAR
Playoff odds: this deal moved NYM's 2021 odds 16% → 26% (+10.1 pts) — how trade timing is graded ↗
receives — most valuable first
Javier BáezSS·28y·R/R
+$18.9M+$18.9M± $10M exp surplusrealized +$14.4M 2.7± 1 exp WARrealized 2.0
Prior
league baseline (track record outweighs draft pedigree) → 0.28/yr
Evidence
recent form 4.3/yr over 1.9 season
Talent
2.72/yr blended
Horizon
1.0 control yr
Trevor WilliamsP·29y·R/R
+$9.8M+$9.8M± $16M exp surplusrealized +$7.2M 1.6± 2 exp WARrealized 1.3
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 1.2/yr over 1.7 season
Talent
0.79/yr blended
Horizon
2.0 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.