RRosternomics
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JZ

Jack Zduriencik

Born Jan 11, 1951 · New Castle, PA · age 75

General manager for the Mariners (2009–2015).

7 seasons with salary-era data across 1 stint. All figures are franchise-level outcomes during the tenure, not solely attributable to one executive.

Overview

Titles0
Pennants0
Playoffs0
Record522–612
Win %0.460
-4.7GM WAR — wins above a replacement GM (org-adjusted, shrunk; per season) ±5.2174th/195 execs
5.7Depth — 2+ WAR regulars per season (the breadth that drives TAB, not stars)125th/195 execs
-7.8Dead WAR — WAR/yr bled by sub-replacement players (closer to 0 = better)182nd/195 execs
41%Dead money — payroll on <0.5-WAR players (lower = better)140th/195 execs
$18MCheap-talent surplus — $/yr of value from cost-controlled (pre-arb/arb) players above their pay; the selection engine, and the stickiest GM skill we track80th/195 execs
$12MDrafted surplus — cheap-talent surplus from his own draftees (the develop-from-the-draft engine)50th/195 execs
$3MTraded-for surplus — cheap-talent surplus from cost-controlled players he acquired via trade84th/195 execs
$3MInt'l surplus — cheap-talent surplus from his own international signees40th/195 execs
-44.5TAB — talent above budget — roster-construction alpha (talent your budget bought above expectation), tenure total180th/195 execs
-41.1WAB — realized wins (TAB + the non-repeatable luck of converting talent to wins)177th/195 execs
0.75Acquisition Leverage — playoff pts per acquired WAR, graded once in the year each deal's wins arrive (the repeatable decision skill)136th/195 execs
-146Roster surplus $M148th/195 execs

Tenure breakdown

TeamRoleYearsSzns WAB WAB/yr TAB WAR surp HG Trade FA R5 AcqLev W-L% POPenWS Surp $M
▸ Mariners GM 2009–2015 7 -41.1 -5.87 -44.5 -55.9 +100.1 -27.7 -25.6 -0.2 0.75 0.460 ––– -146
Career total (1985+ data) 7 -41.1 -44.5 -55.9 +100.1 -27.7 -25.6 -0.2 0.75 0.460 –– – -146

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)+100.1
Trade-27.7
Free agency-25.6
Rule 5 / minor draft-0.2
Sourcing mix: 64% draft · 27% FA · 9% trade · 0% R5

Roster value distribution — career average — depth vs. stars

Every roster slot ranked best→worst by WAR, averaged across Jack Zduriencik'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 — 121 players, by realized fWAR for the franchise (scroll for more)

PlayerPosTeam How Year Szns fWAR WAR/yr Lev
Kyle Seager 3B SEA Draft 2009 11 +34.1 +3.1 –
Robinson Canó 2B SEA Free agency 2013 5 +20.6 +4.1 4.4
Nelson Cruz DH/OF SEA Free agency 2014 4 +16.1 +4.0 2.1
James Paxton P SEA Draft 2010 7 +13.7 +2.0 –
Mike Zunino C SEA Draft 2012 6 +13.6 +2.3 –
Hisashi Iwakuma P SEA Draft 2012 5 +11.9 +2.4 –
Jason Vargas P SEA Trade 2009 4 +8.1 +2.0 0.9
Dustin Ackley 2B/OF SEA Draft 2009 4 +7.5 +1.9 –
Edwin Díaz P SEA Draft 2012 3 +6.3 +2.1 –
Brad Miller SS SEA Draft 2011 3 +4.7 +1.6 –
Brendan Ryan SS SEA Trade 2010 3 +4.2 +1.4 0.6
Cliff Lee P SEA Trade 2010 1 +4.1 +4.1 0.7
Franklin Gutiérrez OF SEA Free agency 2013 7 +3.9 +0.6 8.4
Russell Branyan 1B/3B SEA Trade 2009 2 +3.5 +1.7 4.5
Taijuan Walker P SEA Draft 2010 5 +3.3 +0.7 –
Tom Wilhelmsen P SEA Trade 2011 5 +3.1 +0.6 –
Charlie Furbush P SEA Trade 2011 5 +2.8 +0.6 0.0
Seth Smith OF SEA Trade 2015 2 +2.7 +1.3 0.9
Kevin Millwood P SEA Free agency 2012 1 +2.6 +2.6 1.2
John Jaso C SEA Trade 2011 1 +2.4 +2.4 1.1
Danny Farquhar P SEA Trade 2013 2 +2.4 +1.2 0.9
David Aardsma P SEA Trade 2009 2 +2.3 +1.1 3.4
Carson Smith P SEA Draft 2011 2 +2.2 +1.1 –
Ketel Marte 2B SEA Intl FA 2010 2 +2.1 +1.1 –
Brandon League P SEA Trade 2009 3 +1.7 +0.6 0.1
Roenis Elías P SEA Intl FA 2011 4 +1.6 +0.4 –
Casper Wells OF SEA Trade 2011 2 +1.6 +0.8 0.1
Nick Franklin 2B SEA Draft 2009 1 +1.4 +1.4 –
Nate Karns P SEA Trade 2015 1 +1.4 +1.4 4.1
Óliver Pérez P SEA Free agency 2012 2 +1.4 +0.7 0.3
Nori Aoki OF SEA Free agency 2015 1 +1.3 +1.3 3.7
Blake Beavan P SEA Trade 2010 2 +1.3 +0.7 –
Austin Jackson OF SEA Trade 2015 1 +1.2 +1.2 0.9
J. A. Happ P SEA Trade 2015 1 +1.2 +1.2 0.6
Tony Zych P SEA Trade 2015 3 +1.1 +0.4 –
Steve Cishek P SEA Free agency 2015 1 +1.0 +1.0 2.9
Fernando Rodney P SEA Free agency 2014 1 +1.0 +1.0 1.0
Anthony Misiewicz P SEA Draft 2015 2 +0.9 +0.4 –
Ryan Langerhans OF SEA Trade 2009 2 +0.8 +0.4 1.2
Logan Morrison 1B/OF SEA Trade 2013 2 +0.8 +0.4 0.7
Emilio Pagán P SEA Draft 2013 1 +0.8 +0.8 –
Dominic Leone P SEA Draft 2012 1 +0.6 +0.6 –
Kendrys Morales 1B/DH SEA Trade 2013 1 +0.6 +0.6 0.6
Jack Hannahan 3B SEA Trade 2009 1 +0.6 +0.6 1.1
Shawn O'Malley SS/OF SEA Free agency 2015 2 +0.5 +0.2 0.2
Chris Taylor OF SEA Draft 2012 1 +0.5 +0.5 –
Aaron Harang P SEA Trade 2013 1 +0.5 +0.5 0.2
Mark Trumbo 1B/DH/OF SEA Trade 2015 1 +0.5 +0.5 0.3
Adam Kennedy 2B SEA Free agency 2011 1 +0.4 +0.4 0.1
Joe Saunders P SEA Free agency 2013 1 +0.4 +0.4 0.2
Chris Gimenez C SEA Free agency 2010 1 +0.3 +0.3 0.1
Evan Scribner P SEA Trade 2015 1 +0.3 +0.3 1.3
Justin Smoak 1B SEA Trade 2010 2 +0.3 +0.2 0.1
Dan Altavilla P SEA Draft 2014 2 +0.2 +0.1 –
Josh Bard C SEA Free agency 2010 1 +0.2 +0.2 0.1
Jason Bay OF SEA Free agency 2012 1 +0.2 +0.2 0.1
Carter Capps P SEA Draft 2011 1 +0.2 +0.2 –
Josh Kinney P SEA Free agency 2011 1 +0.2 +0.2 0.1
Josh Lueke P SEA Trade 2010 1 +0.2 +0.2 –
Mike Montgomery P SEA Trade 2015 2 +0.2 +0.1 –
David Pauley P SEA Free agency 2009 2 +0.2 +0.1 0.0
Chris Ray P SEA Free agency 2011 1 +0.2 +0.2 0.1
Mike Sweeney 1B/DH SEA Free agency 2009 2 +0.2 +0.1 0.4
Jesús Colomé P SEA Free agency 2010 1 +0.1 +0.1 0.0
Luke French P SEA Trade 2009 1 +0.1 +0.1 –
Chris Jakubauskas P SEA Draft 2009 1 +0.1 +0.1 –
Tim Lopes OF SEA Draft 2012 1 +0.1 +0.1 –
Vidal Nuño P SEA Trade 2015 2 +0.1 +0.0 0.0
Stephen Pryor P SEA Draft 2010 1 +0.1 +0.1 –
Guillermo Quiroz C SEA Free agency 2009 2 +0.1 +0.0 0.1
Art Warren P SEA Draft 2015 1 +0.1 +0.1 –
Abraham Almonte OF SEA Trade 2013 2 +0.0 +0.0 –
Jonathan Aro P SEA Trade 2015 – -0.0 – –
Dan Cortes P SEA Trade 2009 1 +0.0 +0.0 –
Lucas Luetge P SEA Rule 5 2011 2 +0.0 +0.0 –
Humberto Quintero C SEA Free agency 2013 1 -0.0 -0.0 0.1
Tyler Smith 2B/SS SEA Draft 2013 1 +0.0 +0.0 –
Thyago Vieira P SEA Intl FA 2010 1 +0.0 +0.0 –
Jack Wilson SS SEA Trade 2009 3 +0.0 +0.0 0.4
Chris Young P SEA Free agency 2014 – -0.0 – –
Brandon Bantz C SEA Draft 2009 – -0.1 – –
Chad Cordero P SEA Free agency 2009 – -0.1 – –
Jack Cust DH/OF SEA Free agency 2010 – -0.1 – –
Logan Kensing P SEA Free agency 2014 – -0.1 – –
Adam Lind 1B/DH SEA Trade 2015 – -0.1 – –
Andrew Moore P SEA Draft 2015 – -0.1 – –
Ljay Newsome P SEA Draft 2015 – -0.1 – –
Vinny Nittoli P SEA Draft 2014 – -0.1 – –
Donn Roach P SEA Free agency 2015 – -0.1 – –
Luis Rodríguez 2B/3B/SS SEA Free agency 2010 – -0.1 – –
Adrian Sampson P SEA Trade 2015 – -0.1 – –
Josh Wilson SS SEA Free agency 2009 1 -0.1 -0.1 0.7
Jamey Wright P SEA Trade 2010 1 -0.1 -0.1 0.0
Robert Andino 2B/SS SEA Trade 2012 – -0.2 – –
Steven Baron C SEA Draft 2009 – -0.2 – –
Héctor Noesí P SEA Trade 2012 1 -0.2 -0.2 0.0
David Rollins P SEA Rule 5 2014 – -0.2 – –
Eliézer Alfonzo C SEA Free agency 2009 – -0.3 – –
Luis Jiménez DH SEA Trade 2012 – -0.3 – –
Munenori Kawasaki 2B/SS SEA Draft 2012 – -0.3 – –
Chance Ruffin P SEA Trade 2011 – -0.3 – –
Greg Halman OF SEA Trade 2010 – -0.4 – –
Tyler Olson P SEA Draft 2013 – -0.4 – –
Milton Bradley OF SEA Trade 2009 1 -0.5 -0.5 0.0
Eric Byrnes OF SEA Free agency 2010 – -0.5 – –
John Hicks C/1B SEA Draft 2011 – -0.6 – –
Ian Snell P SEA Trade 2009 1 -0.6 -0.6 0.6
Rickie Weeks 2B SEA Free agency 2015 – -0.6 – –
Chone Figgins 3B/OF SEA Free agency 2009 1 -0.7 -0.7 0.3
Chris Iannetta C SEA Free agency 2015 – -0.7 – –
James Jones OF SEA Draft 2009 – -0.8 – –
Garrett Olson P SEA Trade 2009 – -0.8 – –
Braden Bishop OF SEA Draft 2015 – -0.9 – –
Endy Chávez OF SEA Free agency 2013 2 -0.9 -0.4 1.2
Corey Hart OF SEA Free agency 2013 – -0.9 – –
Joe Beimel P SEA Free agency 2014 – -1.0 – –
Anthony Vasquez P SEA Draft 2009 – -1.1 – –
Trayvon Robinson OF SEA Trade 2011 – -1.2 – –
Stefen Romero OF SEA Draft 2010 – -1.3 – –
Casey Kotchman 1B SEA Trade 2010 – -1.7 – –
Miguel Olivo C SEA Free agency 2011 1 -1.9 -1.9 0.0

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.