Rosternomics
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Mariners SEA

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GM: Jeff Kingston (since 2015)

2015 roster — every player, value & surplus

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-6.3
WAB — wins above budget
-8.1
TAB — roster Talent above budget
76–86 (0.469)
record
-40M
surplus $M (value/$)
26.5
roster fWAR
$124.4M
payroll
PlayerAgeServiceGfWARSalary $MSurplus $M
Nelson Cruz 34 FA-elig 152 5.0 14.2 +1.6
Kyle Seager 27 arb 161 3.8 4.5 +7.4
Robinson Canó 32 FA-elig 156 2.8 24.0 -15.3
Félix Hernández 29 FA-elig 31 2.6 24.9 -16.6
Franklin Gutierrez 32 FA-elig 59 2.3 0.3 +6.9
Carson Smith 25 pre-arb 70 2.0 0.5 +5.9
Seth Smith 32 FA-elig 136 1.8 6.0 -0.2
Ketel Marte 21 – 57 1.8 0.2 +5.4
Taijuan Walker 22 pre-arb 29 1.8 0.5 +5.1
Austin Jackson↔ CHC 28 arb 107 1.8 6.1 -0.5
Hisashi Iwakuma 34 arb 20 1.7 7.0 -1.6
Brad Miller 25 pre-arb 144 1.3 0.5 +3.6
J.A. Happ↔ PIT 32 FA-elig 21 1.2 4.4 -0.7
Mark Lowe↔ TOR 32 – 34 1.0 0.2 +3.0
Mike Zunino 24 pre-arb 112 0.7 0.5 +1.8
Tom Wilhelmsen 31 arb 53 0.7 1.4 +0.8
Roenis Elías 26 pre-arb 22 0.6 0.3 +1.6
Tony Zych 24 – 13 0.6 0.1 +1.7
Mark Trumbo↔ ARI 29 arb 96 0.5 4.7 -3.1
James Paxton 26 pre-arb 13 0.4 0.5 +0.8
Shawn O'Malley 27 pre-arb 24 0.4 0.1 +1.2
Mike Montgomery 25 – 16 0.2 0.2 +0.3
Charlie Furbush 29 arb 33 0.1 1.3 -0.9
Jesús Sucre 27 pre-arb 52 0.1 0.5 -0.3
Vidal Nuño↔ ARI 27 pre-arb 32 0.0 0.3 -0.2
Logan Morrison 27 arb 146 0.0 2.7 -2.7
Lucas Luetge 28 pre-arb 1 -0.0 0.0 -0.0
Rob Rasmussen↔ TOR 26 pre-arb 19 -0.0 0.2 -0.3
Stefen Romero 26 pre-arb 13 -0.0 0.1 -0.2
David Rollins 25 pre-arb 20 -0.1 0.5 -0.7
Logan Kensing 32 arb 19 -0.1 0.1 -0.3
Yoervis Medina↔ CHC 26 pre-arb 12 -0.1 0.4 -0.6
Edgar Olmos 25 pre-arb 6 -0.1 0.5 -0.8
José Ramírez↔ NYY 25 pre-arb 5 -0.1 0.1 -0.4
Justin Ruggiano↔ LAD 33 FA-elig 36 -0.2 1.6 -2.2
Steven Baron 24 – 4 -0.2 – –
Dominic Leone↔ ARI 23 – 10 -0.2 0.1 -0.8
Danny Farquhar 28 arb 43 -0.2 0.5 -1.3
JC Ramírez↔ ARI 26 pre-arb 8 -0.3 0.0 -1.0
Tyler Olson 25 – 11 -0.4 0.1 -1.4
Jesus Montero 25 pre-arb 38 -0.4 0.2 -1.6
Chris Taylor 24 pre-arb 37 -0.5 0.5 -1.9
Welington Castillo↔ ARI 28 arb 6 -0.5 0.1 -1.6
James Jones 26 pre-arb 28 -0.6 0.1 -1.9
Rickie Weeks Jr. 32 FA-elig 37 -0.6 2.0 -3.8
Mayckol Guaipe 24 pre-arb 21 -0.6 0.1 -2.0
Dustin Ackley↔ NYY 27 arb 85 -0.6 2.0 -3.9
John Hicks 25 – 17 -0.6 0.1 -2.1
Willie Bloomquist 37 FA-elig 35 -0.7 3.0 -5.2
Joe Beimel 38 FA-elig 53 -0.8 0.5 -3.0
Fernando Rodney↔ CHC 38 FA-elig 54 -0.8 5.6 -8.2

51 players appeared (WAR is complete); salary & surplus are on record for 50 of them (98%). Players without a salary show "–" — no single historical salary source is fully complete (especially 2020–2022).

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.