Rosternomics
← Trade Database
August 1, 2023

MIACLE

unsettledToo soon to call — players still accruing.
MIAMIA Kim Ng net −$31.2M net +0.3
received −$24.0M−$24.0M ± $14M expected surplus · −$31.2M realized received 2.0 ± 2 expected · 0.3 realized WAR
Playoff odds: this deal moved MIA's 2023 odds 5% → 5% (+0.8 pts) — how trade timing is graded ↗
receives — most valuable first
Josh Bell1B/DH·30y·B/R
−$24.0M−$24.0M± $14M exp surplusrealized −$31.2M 2.0± 2 exp WARrealized 0.3
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 1.9/yr over 2.4 seasons
Talent
1.35/yr blended
Horizon
1.5 control yr × 0.98 age decline
CLECLE Chris Antonetti net +$31.2M net -0.3
received +$30.4M+$17.6M ± $30M expected surplus · +$0.0M realized received 5.3 ± 4 expected · 0.0 realized WAR
Playoff odds: this deal moved CLE's 2023 odds 6% → 5% (-0.9 pts) — how trade timing is graded ↗
receives — most valuable first
Jean Segura2B/SS·33y·R/R
+$20.9M+$8.1M± $21M exp surplusrealized +$0.0M 3.2± 3 exp WARrealized 0.0
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 3.4/yr over 2.1 seasons
Talent
2.20/yr blended
Horizon
1.5 control yr × 0.97 age decline
Kahlil Watson#42.5LF·20y·L/R
+$9.4M+$9.4M± $22M exp surplusrealized +$0.0M 2.1± 3 exp WARrealized 0.0
Prior
Composite #42.5 prospect (Baseball America #60 (2022) / MLB Pipeline #25 (2022)) — fell off 1 list since, regressed → 0.35/yr
Evidence
no MLB track record — leans on pedigree
Talent
0.35/yr blended
Horizon
6.0 control yrs
Fan verdict — who overpaid?

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.