Rosternomics
← Trade Database
July 30, 1991

SDPANA

SDP won this trade +$2.4M surplus SDP won this trade +1.1 WAR
SDPSDP Joe McIlvaine net +$2.4M net +1.1
received +$6.4M+$6.4M ± $15M expected surplus · −$2.4M realized received 2.6 ± 2 expected · 0.5 realized WAR
Playoff odds: this deal moved SDP's 1991 odds 20% → 24% (+4.4 pts) — how trade timing is graded ↗
receives — most valuable first
Jack Howell3B·29y·L/R
+$6.8M+$6.8M± $15M exp surplusrealized −$2.4M 2.6± 2 exp WARrealized 0.5
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form 1.9/yr over 2.1 seasons
Talent
1.31/yr blended
Horizon
2.0 control yrs
ANAANA Mike Port net −$2.4M net -1.1
received −$4.0M−$4.0M ± $24M expected surplus · −$4.8M realized received 0.0 ± 3 expected · -0.6 realized WAR
Playoff odds: this deal moved ANA's 1991 odds 4% → 3% (-0.8 pts) — how trade timing is graded ↗
receives — most valuable first
Shawn AbnerOF·25y·R/R
−$3.7M−$3.7M± $24M exp surplusrealized −$4.8M 0.0± 3 exp WARrealized -0.6
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form -1.9/yr over 1.0 season
Talent
-0.73/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.