Rosternomics
← Trade Database
July 30, 2024

STLTBR

unsettledToo soon to call — players still accruing.
STLSTL John Mozeliak net +$1.6M net +0.4
received +$2.4M+$0.8M ± $8M expected surplus · +$0.0M realized received 0.7 ± 1 expected · 0.2 realized WAR
Playoff odds: this deal moved STL's 2024 odds 10% → 11% (+0.9 pts) — how trade timing is graded ↗
receives — most valuable first
Shawn ArmstrongP·33y·R/R
+$2.3M+$1.1M± $8M exp surplusrealized +$0.0M 0.7± 1 exp WARrealized 0.2
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form 0.7/yr over 2.5 seasons
Talent
0.52/yr blended
Horizon
1.5 control yr × 0.88 age decline
TBRTBR Erik Neander net −$1.6M net -0.4
received +$14.4M+$14.4M ± $18M expected surplus · −$1.6M realized received 2.8 ± 2 expected · -0.2 realized WAR
Playoff odds: this deal moved TBR's 2024 odds 5% → 5% (-0.4 pts) — how trade timing is graded ↗
receives — most valuable first
Dylan CarlsonOF·25y·B/L
+$14.2M+$14.2M± $18M exp surplusrealized −$1.6M 2.8± 2 exp WARrealized -0.2
Prior
league baseline (track record outweighs draft pedigree) → 0.24/yr
Evidence
recent form 1.5/yr over 1.5 season
Talent
0.94/yr blended
Horizon
3.0 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.