President of baseball ops: Jerry Dipoto (since 2022) · GM: Justin Hollander (since 2023)
| Player | Age | Service | G | fWAR | Salary $M | Surplus $M |
|---|---|---|---|---|---|---|
| Bryan Woo | 26 | pre-arb | 12 | 5.1 | 0.8 | +46.1 |
| Randy Arozarena | 31 | arb | 62 | 5.1 | 15.7 | +31.2 |
| George Kirby | 28 | arb | 12 | 3.4 | 6.5 | +24.9 |
| Julio Rodríguez | 25 | arb | 62 | 3.1 | 20.2 | +8.8 |
| Luke Raley | 31 | arb | 56 | 3.1 | 2.0 | +26.8 |
| Emerson Hancock | 27 | pre-arb | 12 | 2.8 | 0.8 | +24.9 |
| Cole Young | 22 | pre-arb | 62 | 2.7 | 0.8 | +23.9 |
| Logan Gilbert | 29 | arb | 13 | 2.1 | 10.9 | +8.9 |
| J.P. Crawford | 31 | FA-elig | 53 | 1.9 | 12.0 | +5.7 |
| Dominic Canzone | 28 | pre-arb | 53 | 1.7 | 0.8 | +14.8 |
| José A. Ferrer | 26 | – | 29 | 1.7 | – | – |
| Colt Emerson | 20 | – | 15 | 1.6 | 2.0 | +12.7 |
| Brendan Donovan | 29 | arb | 25 | 1.6 | 5.8 | +8.7 |
| Luis Castillo | 33 | FA-elig | 12 | 1.5 | 24.1 | -10.6 |
| Bryce Miller | 27 | pre-arb | 4 | 1.4 | 2.4 | +10.5 |
| Cal Raleigh | 29 | arb | 41 | 1.0 | 12.7 | -3.3 |
| Matt Brash | 28 | arb | 18 | 1.0 | 1.6 | +7.4 |
| Jhonny Pereda | 30 | pre-arb | 12 | 0.9 | 0.6 | +7.5 |
| Andrés Muñoz | 27 | FA-elig | 24 | 0.7 | 7.0 | -0.3 |
| Mitch Garver | 35 | FA-elig | 30 | 0.6 | 2.2 | +3.8 |
| Eduard Bazardo | 30 | pre-arb | 28 | 0.6 | 0.9 | +4.5 |
| Gabe Speier | 31 | arb | 18 | 0.5 | 2.1 | +2.6 |
| Victor Robles | 29 | FA-elig | 12 | 0.5 | 5.1 | -0.6 |
| Alex Hoppe | 27 | – | 11 | 0.4 | 0.7 | +3.0 |
| Casey Legumina↔ TBR | 29 | – | 8 | 0.3 | 0.3 | +2.9 |
| Cooper Criswell | 29 | pre-arb | 23 | 0.3 | 0.8 | +2.2 |
| Will Wilson | 27 | pre-arb | 2 | 0.3 | 0.7 | +1.9 |
| Connor Joe | 33 | arb | 18 | 0.2 | 0.2 | +2.0 |
| Josh Naylor | 29 | FA-elig | 57 | 0.2 | 11.3 | -9.3 |
| Domingo Gonzalez | 26 | – | 4 | 0.1 | 0.0 | +0.9 |
| Patrick Wisdom | 34 | arb | 7 | -0.0 | 0.9 | -1.0 |
| José Suarez↔ ATL | 28 | – | 1 | -0.0 | 0.0 | -0.2 |
| Nick Davila | 27 | – | 7 | -0.1 | 0.1 | -1.0 |
| Ryan Bliss | 26 | pre-arb | 1 | -0.1 | 0.0 | -1.3 |
| Cole Wilcox | 26 | pre-arb | 11 | -0.3 | 0.2 | -2.9 |
| Josh Simpson | 28 | pre-arb | 3 | -0.4 | 0.0 | -4.1 |
| Leo Rivas | 28 | – | 38 | -0.5 | – | – |
| Rob Refsnyder | 35 | FA-elig | 37 | -2.2 | 6.2 | -26.4 |
38 players appeared (WAR is complete); salary & surplus are on record for 36 of them (95%). Players without a salary show "–" — no single historical salary source is fully complete (especially 2020–2022).
WAR = FanGraphs (fWAR), annualized to full-season pace. 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.
| Player | Year | WAR for SEA |
|---|---|---|
| Jamie Moyer | 1996 | 28.0 |
| Mike Cameron | 2000 | 19.8 |
| J. P. Crawford | 2018 | 17.8 |
| Freddy García | 1998 | 15.6 |
| Franklin Gutiérrez | 2008 | 13.4 |
| Mitch Haniger | 2016 | 11.1 |
| Marco Gonzales | 2017 | 10.1 |
| Luis Castillo | 2022 | 8.7 |
| Player | Year traded | WAR elsewhere |
|---|---|---|
| Adam Jones | 2008 | 29.6 |
| Jason Varitek | 1997 | 21.2 |
| Shin-Soo Choo | 2006 | 19.2 |
| Mike Hampton | 1993 | 19.2 |
| Carlos Guillén | 2004 | 18.3 |
| Derek Lowe | 1997 | 18.0 |
| Freddy Peralta | 2015 | 17.3 |
| Chris Taylor | 2016 | 16.9 |