Rosternomics
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Josh Byrnes

Josh Byrnes

★ active

Born 1970 · age 55

General manager for the Diamondbacks, Padres, and Rockies (2006–present).

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

Titles0
Pennants0
Playoffs1
Record636–722
Win %0.468
-2.1WAB — wins above budget77th/195 execs
-9.3Talent above budget — roster-construction alpha (talent your budget bought above expectation)113th/195 execs
0.50Acquisition leverage — playoff pts each bought win added, given the roster it joined (did you buy where wins matter?)141st/195 execs
+7.2WAR surplus (era-neutral, win-equiv)32nd/195 execs
-7Roster surplus $M54th/195 execs

How the roster was sourced

by valueby volume

Share of gross-positive acquired fWAR by channel (vs. league average).

Build channels — net fWAR

Acquired minus surrendered / signed minus walked.

Home-grown (draft/intl)+88.1
Trade-93.2
Free agency-13.3
Rule 5 / minor draft-0.0
Sourcing mix: 56% draft · 13% FA · 31% trade · 0% R5

Tenure breakdown

TeamRoleYearsSzns WAB WAB/yr TAB WAR surp HG Trade FA R5 AcqLev W-L% POPenWS Surp $M
▸ Rockies GM 2026–present 0 +0.0 – +0.0 -3.7 +0.0 +0.2 +0.4 +0.0 – 0.387 ––– -35
▸ Padres GM 2012–2014 3 +1.3 +0.42 -5.9 +8.2 +12.2 -65.3 +8.7 +0.0 0.35 0.471 ––– +21
▸ Diamondbacks GM 2006–2010 5 -3.4 -0.68 -3.4 +2.7 +75.9 -28.1 -22.4 -0.0 0.61 0.473 1–– +7
Career total (1985+ data) 9 -2.1 -9.3 +7.2 +88.1 -93.2 -13.3 -0.0 0.50 0.468 1– – -7

Players acquired — 133 players, by realized fWAR for the franchise (scroll for more)

PlayerPosTeam How Year fWAR
Paul Goldschmidt 1B ARI Draft 2009 +35.3
AJ Pollock OF ARI Draft 2009 +16.7
Patrick Corbin P ARI Trade 2010 +16.5
Tyson Ross P SDP Trade 2012 +9.8
Wade Miley P ARI Draft 2008 +7.0
Andrew Cashner P SDP Trade 2012 +6.8
René Rivera C SDP Free agency 2012 +5.9
Josh Collmenter P ARI Draft 2007 +5.6
Dinelson Lamet P SDP Intl FA 2014 +5.5
Kelly Johnson 2B ARI Free agency 2009 +5.3
Ryan Roberts 2B/3B ARI Free agency 2008 +5.3
Hunter Renfroe OF SDP Draft 2013 +4.8
Doug Davis P ARI Trade 2006 +4.6
Ender Inciarte OF ARI Intl FA 2008 +4.4
Derek Norris C SDP Trade 2014 +4.2
Max Scherzer P ARI Draft 2006 +4.0
Justin Upton OF SDP Trade 2014 +3.4
J. J. Putz P ARI Free agency 2010 +2.9
David Hernandez P ARI Trade 2010 +2.7
Chad Qualls P ARI Trade 2007 +2.7
Travis Jankowski OF SDP Draft 2012 +1.9
Chase Anderson P ARI Draft 2009 +1.8
Augie Ojeda 2B/3B/SS ARI Free agency 2006 +1.7
Chris Owings 2B/SS ARI Draft 2009 +1.4
Joaquín Benoit P SDP Free agency 2013 +1.4
Brandon Maurer P SDP Trade 2014 +1.3
Adam Eaton OF ARI Draft 2010 +1.1
Zach Duke P ARI Trade 2010 +1.0
Matt Kemp OF SDP Trade 2014 +1.0
Shawn Kelley P SDP Trade 2014 +0.9
Henry Blanco C ARI Free agency 2010 +0.8
Jeff DaVanon OF ARI Free agency 2006 +0.8
TJ Rumfield 1B COL Trade 2026 +0.8
José Castillo P SDP Trade 2014 +0.8
Jesse Hahn P SDP Trade 2014 +0.8
Adam LaRoche 1B ARI Free agency 2010 +0.7
Alex Dickerson OF SDP Trade 2013 +0.6
Enrique Burgos P ARI Intl FA 2007 +0.5
Tommy Layne P SDP Trade 2012 +0.5
Collin Cowgill OF ARI Draft 2008 +0.4
Matt Davidson 3B/DH ARI Draft 2009 +0.3
Liván Hernández P ARI Trade 2006 +0.3
Clay Zavada P ARI Draft 2006 +0.3
Willi Castro 2B/OF COL Free agency 2026 +0.3
Michael Lorenzen P COL Free agency 2026 +0.3
Blaine Boyer P SDP Free agency 2014 +0.3
Brandon Morrow P SDP Free agency 2014 +0.3
Gerardo Reyes P SDP Trade 2014 +0.3
Mike Bolsinger P ARI Draft 2010 +0.2
Jarrod Parker P ARI Draft 2007 +0.2
Leo Rosales P ARI Trade 2007 +0.2
Bryan Shaw P ARI Draft 2008 +0.2
Jose Quintana P COL Free agency 2026 +0.2
Tomoyuki Sugano P COL Free agency 2026 +0.2
Clint Barmes 2B/SS SDP Free agency 2014 +0.2
Odrisamer Despaigne P SDP Intl FA 2014 +0.2
Sean O'Sullivan P SDP Free agency 2012 +0.2
Eddy Rodríguez C SDP Trade 2012 +0.2
Charles Brewer P ARI Draft 2009 +0.1
Mike Hampton P ARI Free agency 2010 +0.1
Kam Mickolio P ARI Trade 2010 +0.1
Juan Miranda 1B ARI Trade 2010 +0.1
Trent Oeltjen OF ARI Trade 2009 +0.1
Daniel Schlereth P ARI Draft 2008 +0.1
Jason Lane OF SDP Free agency 2013 +0.1
Luis Urías 2B/3B SDP Intl FA 2013 +0.1
Brett Wallace 1B SDP Free agency 2014 +0.1
Eric Yardley P SDP Intl FA 2013 +0.1
Bryan Augenstein P ARI Draft 2007 -0.0
Kris Benson P ARI Free agency 2010 -0.0
Geoff Blum 3B ARI Free agency 2010 +0.0
Ryan Cook P ARI Draft 2008 -0.0
J. C. Gutiérrez P ARI Trade 2007 +0.0
Bradin Hagens P ARI Draft 2009 -0.0
R. J. Alvarez P SDP Trade 2014 +0.0
Héctor Ambriz P SDP Free agency 2014 -0.0
Kyle McGrath P SDP Draft 2014 -0.0
Chris Robinson C SDP Trade 2013 -0.0
Sócrates Brito OF ARI Intl FA 2010 -0.1
Sean Burroughs 3B ARI Free agency 2010 -0.1
Tony Clark 1B ARI Trade 2008 -0.1
Tom Gordon P ARI Free agency 2009 -0.1
Aaron Heilman P ARI Trade 2009 -0.1
David Holmberg P ARI Trade 2010 -0.1
Terry Mulholland P ARI Free agency 2006 -0.1
Joe Paterson P ARI Rule 5 2010 -0.1
Jailen Peguero P ARI Trade 2007 -0.1
Connor Robertson P ARI Trade 2007 -0.1
Carlos Rosa P ARI Trade 2010 -0.1
Daniel Stange P ARI Draft 2006 -0.1
Josh Wilson SS ARI Free agency 2008 -0.1
Billy Buckner P SDP Free agency 2014 -0.1
Jake Goebbert 1B SDP Trade 2014 -0.1
Kyle Lloyd P SDP Draft 2013 -0.1
Aaron Northcraft P SDP Trade 2014 -0.1
Micah Owings P SDP Free agency 2012 -0.1
Brandon Allen 1B ARI Trade 2009 -0.2
Luke Carlin C ARI Free agency 2009 -0.2
Konrad Schmidt C ARI Intl FA 2007 -0.2
Tyler Skaggs P ARI Trade 2010 -0.2
Brooks Conrad 2B/3B SDP Free agency 2014 -0.2
Ross Ohlendorf P SDP Free agency 2012 -0.2
Chris Rearick P SDP Trade 2012 -0.2
Jeff Suppan P SDP Free agency 2012 -0.2
Jeff Bajenaru P ARI Trade 2006 -0.3
Chris Burke 2B/OF ARI Trade 2007 -0.3
Eury De La Rosa P ARI Intl FA 2008 -0.3
Cole Gillespie OF ARI Trade 2009 -0.3
Zach Kroenke P ARI Rule 5 2009 -0.3
Xavier Nady OF ARI Free agency 2010 -0.3
Jeff Francoeur OF SDP Free agency 2014 -0.3
Walker Lockett P SDP Draft 2012 -0.3
Chris Nelson 3B SDP Free agency 2014 -0.3
Donn Roach P SDP Trade 2012 -0.3
Ryan Wheeler 1B/3B ARI Draft 2009 -0.4
Josh Whitesell 1B ARI Trade 2008 -0.4
Will Middlebrooks 3B SDP Trade 2014 -0.4
Jake Elmore SS/OF ARI Draft 2008 -0.5
Valente Bellozo P COL Free agency 2026 -0.5
José Rondón SS SDP Trade 2014 -0.5
Kip Wells P SDP Free agency 2012 -0.5
Sam Demel P ARI Trade 2010 -0.6
Rodrigo López P ARI Free agency 2009 -0.6
Edouard Julien 2B COL Trade 2026 -0.6
Melvin Mora 3B ARI Free agency 2010 -0.7
Alexi Amarista 2B/SS/OF SDP Trade 2012 -0.7
Barry Enright P ARI Draft 2007 -0.8
Frank Garcés P SDP Trade 2014 -0.9
Tony Abreu 2B/3B ARI Trade 2009 -1.1
John Hester C ARI Draft 2006 -1.1
Alberto Callaspo 2B/3B ARI Trade 2006 -1.2
Alex Romero OF ARI Trade 2007 -1.2
Jason Marquis P SDP Free agency 2012 -1.4

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.

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.