RRosternomics
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DS

Dave Stewart

Born Feb 19, 1957 · Oakland, CA · age 69

General manager for the Blue Jays and Diamondbacks (2001–2016).

3 seasons with salary-era data across 2 stints. All figures are franchise-level outcomes during the tenure, not solely attributable to one executive.

Overview

Titles0
Pennants0
Playoffs0
Record228–258
Win %0.469
+0.1GM WAR — wins above a replacement GM (org-adjusted, shrunk; per season) ±6.574th/195 execs
5.7Depth — 2+ WAR regulars per season (the breadth that drives TAB, not stars)123rd/195 execs
-4.6Dead WAR — WAR/yr bled by sub-replacement players (closer to 0 = better)57th/195 execs
38%Dead money — payroll on <0.5-WAR players (lower = better)128th/195 execs
$31MCheap-talent surplus — $/yr of value from cost-controlled (pre-arb/arb) players above their pay; the selection engine, and the stickiest GM skill we track45th/195 execs
$23MDrafted surplus — cheap-talent surplus from his own draftees (the develop-from-the-draft engine)11th/195 execs
$12MTraded-for surplus — cheap-talent surplus from cost-controlled players he acquired via trade36th/195 execs
$-4MInt'l surplus — cheap-talent surplus from his own international signees195th/195 execs
+0.8TAB — talent above budget — roster-construction alpha (talent your budget bought above expectation), tenure total77th/195 execs
-6.7WAB — realized wins (TAB + the non-repeatable luck of converting talent to wins)99th/195 execs
0.87Acquisition Leverage — playoff pts per acquired WAR, graded once in the year each deal's wins arrive (the repeatable decision skill)132nd/195 execs
+16Roster surplus $M32nd/195 execs

Tenure breakdown

TeamRoleYearsSzns WAB WAB/yr TAB WAR surp HG Trade FA R5 AcqLev W-L% POPenWS Surp $M
▸ Diamondbacks GM 2015–2016 2 -3.0 -1.49 +3.1 +11.9 +16.9 -42.3 +5.6 -1.7 0.83 0.457 ––– +38
▸ Blue Jays GM 2001–2001 1 -3.7 -3.73 -2.3 -13.6 +0.2 +1.1 -9.1 -0.6 1.24 0.494 ––– -22
Career total (1985+ data) 3 -6.7 +0.8 -1.7 +17.1 -41.2 -3.6 -2.3 0.87 0.469 –– – +16

Roster Construction

How the roster was sourced

by valueby volume

Share of acquired fWAR by channel vs. league average.

Build channels — net fWAR

Acquired minus surrendered / signed minus walked.

Home-grown (draft/intl)+17.1
Trade-41.2
Free agency-3.6
Rule 5 / minor draft-2.3
Sourcing mix: 44% draft · 34% FA · 22% trade · 0% R5

Roster value distribution — career average — depth vs. stars

Every roster slot ranked best→worst by WAR, averaged across Dave Stewart's seasons. Bars = his rosters; the black line = the league-average player at each slot. Staying above the line deep into the roster is the depth edge.

Players acquired — 55 players, by realized fWAR for the franchise (scroll for more)

PlayerPosTeam How Year Szns fWAR WAR/yr Lev
Geraldo Perdomo SS ARI Intl FA 2016 6 +14.2 +2.4 –
Zack Greinke P ARI Free agency 2015 4 +11.3 +2.8 0.7
Robbie Ray P ARI Trade 2015 5 +11.3 +2.3 3.4
Eric Hinske 3B/OF TOR Trade 2001 5 +7.5 +1.5 –
Jean Segura 2B/SS ARI Trade 2016 1 +6.1 +6.1 1.4
Kevin Ginkel P ARI Draft 2016 6 +3.6 +0.6 –
Taijuan Walker P ARI Trade 2016 3 +3.0 +1.0 14.4
Welington Castillo C ARI Trade 2015 2 +2.5 +1.3 1.8
Jeff Mathis C ARI Free agency 2016 2 +1.5 +0.8 2.6
Fernando Rodney P ARI Free agency 2016 1 +1.3 +1.3 6.6
Jeremy Hellickson P ARI Trade 2015 1 +1.3 +1.3 2.2
Scott Eyre P TOR Trade 2001 2 +1.3 +0.6 0.4
Brandon League P TOR Draft 2001 4 +0.7 +0.2 –
Chris Michalak P TOR Trade 2001 1 +0.6 +0.6 0.7
Rubby De La Rosa P ARI Trade 2015 2 +0.5 +0.2 0.3
Addison Reed P ARI Trade 2015 1 +0.5 +0.5 1.1
Chris Latham OF TOR Trade 2001 1 +0.5 +0.5 0.7
Shelby Miller P ARI Trade 2015 3 +0.4 +0.1 0.0
Tyler Wagner P ARI Trade 2016 1 +0.4 +0.4 0.1
Jarrod Saltalamacchia C ARI Trade 2015 1 +0.4 +0.4 0.7
Philip Gosselin 2B/3B ARI Trade 2015 2 +0.3 +0.2 1.2
Steve Parris P TOR Trade 2001 2 +0.3 +0.2 0.1
J. C. Ramírez P ARI Trade 2015 1 +0.2 +0.2 0.3
Jhoulys Chacín P ARI Free agency 2015 1 +0.1 +0.1 0.1
Taylor Clarke P ARI Draft 2015 3 +0.1 +0.0 –
Rickie Weeks 2B ARI Free agency 2016 1 +0.1 +0.1 0.0
Alex Young P ARI Draft 2015 1 +0.1 +0.1 –
Mark Trumbo 1B/DH/OF ARI Trade 2015 1 +0.1 +0.1 1.0
Jamie Romak 1B/OF ARI Trade 2015 1 +0.1 +0.1 0.2
Kyle Drabek P ARI Free agency 2015 – -0.0 – –
Kyle Jensen 1B/OF ARI Trade 2016 1 +0.0 +0.0 –
Riley Smith P ARI Draft 2016 1 +0.0 +0.0 –
Félix Heredia P TOR Trade 2001 – -0.0 – –
Matt Buschmann P ARI Trade 2016 – -0.1 – –
Jose Campos P ARI Trade 2016 – -0.1 – –
Tyler Clippard P ARI Free agency 2016 1 -0.1 -0.1 0.1
Jon Duplantier P ARI Draft 2016 1 -0.1 -0.1 –
Gerald Laird C ARI Free agency 2015 – -0.1 – –
Kristopher Negrón OF ARI Free agency 2016 1 -0.1 -0.1 0.0
Jack Reinheimer 3B/SS/OF ARI Trade 2015 – -0.1 – –
Chris Herrmann C/OF ARI Trade 2015 1 -0.2 -0.2 0.2
Adam Loewen P ARI Free agency 2015 – -0.2 – –
Gabe Gross OF TOR Draft 2001 – -0.2 – –
Brian Lesher OF TOR Free agency 2001 – -0.2 – –
Justin Miller P TOR Trade 2001 1 -0.2 -0.2 –
Danny Dorn 1B/OF ARI Trade 2015 – -0.3 – –
Luis Frías P ARI Intl FA 2015 – -0.3 – –
Luis Lopez 1B/3B TOR Draft 2001 – -0.3 – –
Rey Fuentes OF ARI Free agency 2016 – -0.4 – –
Dominic Leone P ARI Trade 2015 – -0.4 – –
Pedro Borbón P TOR Trade 2001 1 -0.4 -0.4 0.4
Luke Prokopec P TOR Trade 2001 – -0.6 – –
Corey Thurman P TOR Rule 5 2001 – -0.6 – –
Yoan López P ARI Intl FA 2015 1 -0.7 -0.7 –
Matt Koch P ARI Trade 2015 1 -1.2 -1.2 –

WAB = wins above what the team's payroll predicted (resource-controlled). WAR surplus = era-neutral value (WAR minus payroll in win-equivalents). Roster surplus $M = dollar value of WAR over cost. Build channels (realized fWAR): HG = home-grown via amateur draft / international signing; Trade = acquired minus surrendered (incl. purchases/waivers); FA = signed minus walked; R5 = Rule-5 / minor-league-draft pickups. Credit follows the acquisition year — home-grown to the regime at the player's draft/signing (not whoever was in the chair when he peaked), trade/FA/R5 to the GM who made the move. Players acquired as prospects before debuting (e.g. Smoltz, Bagwell; Rule-5 picks like Uggla) are counted as trade/R5, not home-grown. All are franchise-level outcomes during the stint, not solely attributable to one executive.

Graphs

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Rosternomics — quantifying front-office skill, attribution-clean. Follow @rosternomics on X. Decision-makers on record back to 1933; resource-controlled metrics (WAR & payroll) cover 1985–2026.
Data: FanGraphs (WAR), Baseball-Reference & the Chadwick Bureau register (rosters, IDs), the Lahman Database, Baseball America prospect rankings (via The Baseball Cube), and public payroll records. Transaction and trade data was obtained free of charge from and is copyrighted by Retrosheet. Executive birth/death data via Wikidata (CC0); bios are original. Emoji graphics by OpenMoji (CC BY-SA 4.0).
All figures are franchise-level outcomes credited to the decision-maker in the acquisition year — not solely attributable to one executive.