GM: Billy Beane (since 1998)
| Player | Age | Service | G | fWAR | Salary $M | Surplus $M |
|---|---|---|---|---|---|---|
| Kurt Suzuki | 24 | pre-arb | 148 | 3.4 | 0.4 | +7.2 |
| Mark Ellis | 31 | FA-elig | 117 | 2.8 | 5.0 | +1.4 |
| Rich Harden↔ CHC | 26 | arb | 13 | 2.4 | 2.5 | +3.0 |
| Justin Duchscherer | 30 | FA-elig | 22 | 2.4 | 1.2 | +4.2 |
| Dana Eveland | 24 | arb | 29 | 2.3 | 0.4 | +4.8 |
| Ryan Sweeney | 23 | pre-arb | 115 | 2.2 | 0.4 | +4.6 |
| Jack Cust | 29 | FA-elig | 148 | 2.1 | 0.4 | +4.4 |
| Joe Blanton↔ PHI | 27 | arb | 20 | 1.5 | 2.2 | +1.2 |
| Joey Devine | 24 | – | 42 | 1.5 | – | – |
| Greg Smith | 24 | – | 32 | 1.4 | – | – |
| Bobby Crosby | 28 | arb | 145 | 1.3 | 3.5 | -0.6 |
| Jack Hannahan | 28 | pre-arb | 143 | 1.3 | 0.4 | +2.5 |
| Rajai Davis↔ SFG | 27 | pre-arb | 101 | 1.1 | 0.4 | +2.2 |
| Huston Street | 24 | arb | 63 | 1.1 | 3.3 | -0.8 |
| Carlos González | 22 | – | 85 | 1.0 | – | – |
| Travis Buck | 24 | pre-arb | 38 | 0.9 | 0.4 | +1.7 |
| Chad Gaudin↔ CHC | 25 | arb | 26 | 0.7 | 0.9 | +0.7 |
| Daric Barton | 22 | pre-arb | 140 | 0.7 | 0.4 | +1.1 |
| Josh Outman | 23 | – | 6 | 0.6 | – | – |
| Jerry Blevins | 24 | – | 36 | 0.6 | – | – |
| Dallas Braden | 24 | – | 19 | 0.6 | – | – |
| Brad Ziegler | 28 | – | 47 | 0.5 | – | – |
| Santiago Casilla | 27 | arb | 51 | 0.3 | 0.4 | +0.3 |
| Mike Sweeney | 34 | FA-elig | 42 | 0.3 | 0.5 | +0.1 |
| Sean Gallagher↔ CHC | 22 | – | 11 | 0.2 | – | – |
| Aaron Cunningham | 22 | – | 22 | 0.2 | – | – |
| Gregorio Petit | 23 | – | 14 | 0.2 | – | – |
| Kirk Saarloos | 29 | – | 8 | 0.2 | – | – |
| Kiko Calero | 33 | arb | 5 | 0.1 | 1.0 | -0.9 |
| Jeff Fiorentino | 25 | – | 2 | 0.0 | – | – |
| Alan Embree | 38 | FA-elig | 70 | 0.0 | 3.1 | -3.1 |
| Eric Chavez | 30 | FA-elig | 23 | 0.0 | 11.5 | -11.5 |
| Dan Johnson↔ TBR | 28 | arb | 1 | -0.0 | 0.0 | -0.1 |
| Jeff Gray | 26 | – | 5 | -0.0 | – | – |
| Donnie Murphy | 25 | arb | 46 | -0.1 | 0.4 | -0.5 |
| Andrew Brown | 27 | pre-arb | 31 | -0.1 | 0.4 | -0.6 |
| Fernando Hernandez | 23 | pre-arb | 3 | -0.1 | 0.4 | -0.6 |
| Frank Thomas↔ TOR | 40 | FA-elig | 55 | -0.1 | 9.7 | -10.0 |
| Lenny DiNardo | 28 | arb | 11 | -0.2 | 0.9 | -1.3 |
| Matt Murton↔ CHC | 26 | – | 9 | -0.2 | – | – |
| Brooks Conrad | 28 | – | 6 | -0.2 | – | – |
| Dan Meyer | 26 | – | 11 | -0.2 | – | – |
| Cliff Pennington | 24 | – | 36 | -0.3 | – | – |
| Chris Denorfia | 27 | arb | 29 | -0.3 | 0.4 | -1.0 |
| Emil Brown | 33 | FA-elig | 117 | -0.3 | 1.4 | -2.0 |
| Wes Bankston | 24 | – | 17 | -0.3 | – | – |
| Jeff Baisley | 25 | – | 14 | -0.4 | – | – |
| Keith Foulke | 35 | FA-elig | 31 | -0.5 | 0.7 | -1.8 |
| Eric Patterson↔ CHC | 25 | – | 30 | -0.6 | – | – |
| Rob Bowen | 27 | arb | 37 | -0.7 | 0.4 | -1.9 |
| Gio Gonzalez | 22 | – | 10 | -0.7 | – | – |
51 players appeared (WAR is complete); salary & surplus are on record for 30 of them (59%). 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 |