Rosternomics
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January 23, 2021

HOUCIN

HOU won this trade +$1.6M surplus HOU won this trade +0.3 WAR
HOUHOU James Click net +$1.6M net +0.3
received +$2.4M+$2.4M ± $22M expected surplus · +$0.0M realized received 1.3 ± 3 expected · 0.0 realized WAR
Playoff odds: this deal moved HOU's 2021 odds 88% → 89% (+0.7 pts) — how trade timing is graded ↗
receives — most valuable first
Luke BerryhillC·23y·R/R
+$2.3M+$2.3M± $22M exp surplusrealized +$0.0M 1.3± 3 exp WARrealized 0.0
Prior
#384 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
CINCIN Dick Williams net −$1.6M net -0.3
received −$1.6M−$1.6M ± $23M expected surplus · −$1.6M realized received 0.4 ± 3 expected · -0.3 realized WAR
Playoff odds: this deal moved CIN's 2021 odds 21% → 20% (-1.1 pts) — how trade timing is graded ↗
receives — most valuable first
Cionel PérezP·25y·R/L
−$1.6M−$1.6M± $23M exp surplusrealized −$1.6M 0.4± 3 exp WARrealized -0.3
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form -0.2/yr over 0.5 season
Talent
0.09/yr blended
Horizon
5.0 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.