Rosternomics
← Trade Database
December 11, 1991

NYMSDP

NYM won this trade +$4.8M surplus NYM won this trade +0.7 WAR
NYMNYM Frank Cashen net +$4.8M net +0.7
received −$1.6M−$1.6M ± $13M expected surplus · +$0.0M realized received 0.0 ± 2 expected · 0.0 realized WAR
Playoff odds: this deal moved NYM's 1992 odds 3% → 3% (+0.1 pts) — how trade timing is graded ↗
receives — most valuable first
Steve RosenbergP·27y·L/L
−$1.4M−$1.4M± $13M exp surplusrealized +$0.0M 0.0± 2 exp WARrealized 0.0
Prior
#106 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form -0.2/yr over 1.2 season
Talent
-0.00/yr blended
Horizon
2.0 control yrs
SDPSDP Joe McIlvaine net −$4.8M net -0.7
received −$4.8M−$4.8M ± $37M expected surplus · −$4.8M realized received 0.0 ± 5 expected · -0.7 realized WAR
Playoff odds: this deal moved SDP's 1992 odds 52% → 51% (-0.8 pts) — how trade timing is graded ↗
receives — most valuable first
Jeff Gardner2B·28y·L/R
−$4.5M−$4.5M± $37M exp surplusrealized −$4.8M 0.0± 5 exp WARrealized -0.7
Prior
no pedigree — league baseline → 0.21/yr
Evidence
recent form -4.8/yr over 0.1 season
Talent
-0.13/yr blended
Horizon
5.5 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.