GM: Sandy Alderson (since 1983)
| Player | Age | Service | G | fWAR | Salary $M | Surplus $M |
|---|---|---|---|---|---|---|
| Jose Canseco | 23 | arb | 158 | 7.6 | 0.3 | +2.0 |
| Dave Henderson | 29 | FA-elig | 146 | 6.4 | 0.2 | +1.8 |
| Dave Stewart | 31 | FA-elig | 37 | 5.1 | 0.6 | +1.0 |
| Mark McGwire | 24 | pre-arb | 155 | 3.5 | 0.2 | +0.9 |
| Bob Welch | 31 | FA-elig | 36 | 3.0 | 0.9 | -0.0 |
| Walt Weiss | 24 | pre-arb | 147 | 2.8 | 0.1 | +0.8 |
| Terry Steinbach | 26 | pre-arb | 104 | 2.5 | 0.1 | +0.7 |
| Dennis Eckersley | 33 | FA-elig | 60 | 2.3 | 0.7 | +0.1 |
| Carney Lansford | 31 | FA-elig | 150 | 2.2 | 1.3 | -0.6 |
| Storm Davis | 26 | FA-elig | 33 | 2.1 | 0.6 | +0.1 |
| Glenn Hubbard | 30 | FA-elig | 105 | 2.0 | 0.4 | +0.2 |
| Ron Hassey | 35 | FA-elig | 107 | 1.9 | 0.3 | +0.3 |
| Luis Polonia | 24 | pre-arb | 84 | 1.3 | 0.1 | +0.3 |
| Todd Burns | 24 | pre-arb | 17 | 1.3 | 0.1 | +0.3 |
| Greg Cadaret | 26 | pre-arb | 58 | 1.2 | 0.1 | +0.3 |
| Eric Plunk | 24 | pre-arb | 49 | 0.8 | 0.1 | +0.1 |
| Steve Ontiveros | 27 | arb | 13 | 0.6 | 0.2 | +0.0 |
| Mike Gallego | 27 | arb | 129 | 0.6 | 0.1 | +0.1 |
| Stan Javier | 24 | arb | 125 | 0.5 | 0.1 | +0.1 |
| Gene Nelson | 27 | FA-elig | 57 | 0.5 | 0.5 | -0.3 |
| Dave Parker | 37 | FA-elig | 101 | 0.4 | 1.0 | -0.9 |
| Rick Honeycutt | 34 | FA-elig | 55 | 0.4 | 0.9 | -0.7 |
| Jim Corsi | 26 | – | 11 | 0.2 | – | – |
| Felix Jose | 23 | – | 8 | 0.2 | – | – |
| Rich Bordi | 29 | – | 2 | 0.2 | – | – |
| Dave Otto | 23 | – | 3 | 0.1 | – | – |
| Matt Sinatro | 28 | FA-elig | 10 | 0.1 | 0.7 | -0.7 |
| Jeff Shaver | 24 | – | 1 | -0.0 | – | – |
| Curt Young | 28 | arb | 26 | -0.0 | 0.4 | -0.4 |
| Ed Jurak | 30 | – | 3 | -0.0 | – | – |
| Doug Jennings | 23 | pre-arb | 71 | -0.1 | 0.1 | -0.1 |
| Don Baylor | 39 | FA-elig | 92 | -0.1 | 0.5 | -0.5 |
| Orlando Mercado | 26 | – | 16 | -0.1 | – | – |
| Lance Blankenship | 24 | – | 10 | -0.2 | – | – |
| Tony Phillips | 29 | FA-elig | 79 | -0.3 | 0.2 | -0.3 |
35 players appeared (WAR is complete); salary & surplus are on record for 27 of them (77%). 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.
| Player | Year | WAR for OAK |
|---|---|---|
| Rickey Henderson | 1989 | 26.8 |
| Mark Ellis | 2001 | 22.1 |
| Dennis Eckersley | 1987 | 19.3 |
| Carney Lansford | 1982 | 16.7 |
| Josh Donaldson | 2008 | 13.8 |
| Jed Lowrie | 2013 | 13.0 |
| Brett Anderson | 2007 | 11.5 |
| Sean Manaea | 2015 | 11.2 |
| Player | Year traded | WAR elsewhere |
|---|---|---|
| Rickey Henderson | 1984 | 26.6 |
| Carlos González | 2008 | 24.7 |
| Andre Ethier | 2005 | 24.4 |
| Gio Gonzalez | 2011 | 20.8 |
| Josh Donaldson | 2014 | 20.4 |
| Mark McGwire | 1997 | 19.7 |
| Aaron Harang | 2003 | 19.3 |
| Jeremy Bonderman | 2002 | 15.8 |