Rosternomics
← Trade Database
March 7, 1998

ARINYY

ARI won this trade +$4.0M surplus ARI won this trade +1.4 WAR
ARIARI Joe Garagiola net +$4.0M net +1.4
received −$3.2M−$3.2M ± $26M expected surplus · +$2.4M realized received 0.0 ± 3 expected · 1.5 realized WAR
Playoff odds: this deal moved ARI's 1998 odds 0% → 1% (+0.2 pts) — how trade timing is graded ↗
receives — most valuable first
Andy Fox2B/SS·27y·L/R
−$3.0M−$3.0M± $26M exp surplusrealized +$2.4M 0.0± 3 exp WARrealized 1.5
Prior
league baseline (track record outweighs draft pedigree) → 0.21/yr
Evidence
recent form -0.7/yr over 0.6 season
Talent
-0.10/yr blended
Horizon
4.0 control yrs
NYYNYY Bob Watson net −$4.0M net -1.4
received −$0.8M−$0.8M ± $34M expected surplus · −$1.6M realized received 1.3 ± 4 expected · 0.1 realized WAR
Playoff odds: this deal moved NYY's 1998 odds 98% → 98% (-0.9 pts) — how trade timing is graded ↗
receives — most valuable first
Todd ErdosP·24y·R/R
+$2.3M+$2.3M± $22M exp surplusrealized −$1.6M 1.3± 3 exp WARrealized 0.1
Prior
#253 overall draft pick — at the league baseline → 0.21/yr
Evidence
recent form 0.3/yr over 0.4 season
Talent
0.23/yr blended
Horizon
5.5 control yrs
Marty JanzenP·25y·R/R
−$3.0M−$3.0M± $26M exp surplusrealized +$0.0M 0.0± 3 exp WARrealized 0.0
Prior
Composite #40.0 pedigree (Baseball America #40 (1996)) — fell off 2 lists since, regressed — at the league baseline → 0.21/yr
Evidence
recent form -0.4/yr over 0.7 season
Talent
-0.02/yr blended
Horizon
4.0 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.