Rosternomics
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Mariners SEA

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GM: Jack Zduriencik (since 2009)

2012 roster — every player, value & surplus

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-3.0
WAB — wins above budget
-3.2
TAB — roster Talent above budget
75–87 (0.463)
record
-3M
surplus $M (value/$)
27.3
roster fWAR
$73.5M
payroll
PlayerAgeServiceGfWARSalary $MSurplus $M
Félix Hernández 26 FA-elig 33 6.7 18.5 -1.3
Kyle Seager 24 pre-arb 155 3.8 0.5 +9.2
Kevin Millwood 37 FA-elig 28 2.6 1.0 +5.6
Michael Saunders 25 arb 139 2.4 0.5 +5.7
John Jaso 28 arb 108 2.4 0.5 +5.6
Dustin Ackley 24 pre-arb 153 2.1 1.5 +3.9
Tom Wilhelmsen 28 pre-arb 73 1.8 0.5 +4.1
Jason Vargas 29 FA-elig 33 1.7 4.8 -0.5
Ichiro Suzuki↔ NYY 38 FA-elig 95 1.5 10.0 -6.2
Brendan Ryan 30 arb 141 1.4 1.8 +1.8
Erasmo Ramírez 22 pre-arb 16 1.1 0.5 +2.3
Casper Wells 27 pre-arb 93 1.0 0.5 +2.1
Charlie Furbush 26 pre-arb 48 1.0 0.5 +2.0
Hisashi Iwakuma 31 pre-arb 30 0.9 1.5 +0.9
Blake Beavan 23 pre-arb 26 0.9 0.5 +1.8
Oliver Pérez 30 FA-elig 33 0.6 0.5 +1.1
Shawn Kelley 28 arb 47 0.5 0.6 +0.7
Carter Capps 21 – 18 0.5 0.5 +0.7
Brandon League↔ LAD 29 FA-elig 46 0.4 3.1 -2.0
Josh Kinney 33 pre-arb 35 0.2 0.2 +0.3
Carlos Triunfel 22 pre-arb 10 0.2 0.5 -0.0
Lucas Luetge 25 – 63 0.1 0.5 -0.1
Franklin Gutierrez 29 FA-elig 40 0.1 5.5 -5.3
Mike Carp 26 arb 59 -0.1 0.5 -0.9
Eric Thames↔ TOR 25 pre-arb 40 -0.1 0.2 -0.6
Carlos Peguero 25 pre-arb 17 -0.2 0.5 -0.9
George Sherrill 35 FA-elig 2 -0.2 1.1 -1.6
Munenori Kawasaki 31 pre-arb 61 -0.3 0.6 -1.3
Stephen Pryor 22 pre-arb 27 -0.3 0.5 -1.2
Trayvon Robinson 24 pre-arb 46 -0.3 0.5 -1.2
Hector Noesí 25 pre-arb 22 -0.3 0.5 -1.3
Luis Jimenez 30 pre-arb 7 -0.3 0.5 -1.3
Alex Liddi 23 pre-arb 38 -0.3 0.5 -1.3
Steve Delabar↔ TOR 28 pre-arb 34 -0.3 0.3 -1.2
Miguel Olivo 33 FA-elig 87 -0.7 3.5 -5.3
Justin Smoak 25 pre-arb 132 -0.8 0.5 -2.6
Chone Figgins 34 FA-elig 66 -0.9 9.0 -11.2
Jesus Montero 22 pre-arb 135 -1.2 0.5 -3.5

WAR = FanGraphs (fWAR). Green = produced more value than paid (bargain); red = paid more than produced. Service: pre-arb (<3 yr) / arb (3–6) / FA-eligible (6+). Click headers to sort.

History: front-office performance & develop-vs-buy (1985–2024)

Trade ledger (realized WAR, all-time)

Best acquisitions
PlayerYearWAR for SEA
Jamie Moyer199628.0
Mike Cameron200019.8
J. P. Crawford201817.8
Freddy García199815.6
Franklin Gutiérrez200813.4
Mitch Haniger201611.1
Marco Gonzales201710.1
Luis Castillo20228.7
Ones that got away
PlayerYear tradedWAR elsewhere
Adam Jones200829.6
Jason Varitek199721.2
Shin-Soo Choo200619.2
Mike Hampton199319.2
Carlos Guillén200418.3
Derek Lowe199718.0
Freddy Peralta201517.3
Chris Taylor201616.9
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.