| | | | | | | | | | ARI | ATL | BAL | BOS | CHA | CHN | CIN | CLE | COL | DET | FLO | HOU | KCA | LAA | LAN | | MIL | MIN | NYA | NYN | OAK | PHI | PIT | SDN | SFN | SEA | SLN | TBA | TEX | TOR | WAS | | Team Index | Draft History | Starters: Positional - Pitchers | Registers: Batters - Pitchers | Leaders: Batters - Pitchers |  | Oakland Athletics Pitching Staff Chart |
| | Year | Starting Pitchers | Closer | Bullpen | | 2010 112-50 | Halladay 25-9, 3.25 | Webb 21-7, 3.79 | Harden 11-10, 5.39 | Matsuzaka 15-4, 5.11 | Porcello 11-5, 3.82 | Papelbon 40 SV, 0.97 | Wilson 61 G, 2.97 | Papelbon 59 G, 0.97 | Fulchino 58 G, 2.35 | | 2011 100-62 | Halladay 20-9, 3.40 | Webb 18-7, 3.02 | Harden 14-10, 3.88 | Porcello 16-11, 4.22 | Costello 7-3, 3.81 | Papelbon 37 SV, 2.31 | Papelbon 64 G, 2.31 | Wilson 58 G, 2.09 | Grilli 50 G, 3.41 | | 2012 111-51 | Wainwright 20-10, 3.40 | Webb 20-5, 2.92 | Costello 18-6, 3.28 | Halladay 12-7, 3.28 | Porcello 13-5, 4.57 | Papelbon 32 SV, 1.65 | Wilson 71 G, 3.03 | Francisco 66 G, 3.96 | Papelbon 53 G, 1.65 | | 2013 106-56 | Halladay 16-6, 3.40 | Wainwright 15-8, 3.51 | Costello 10-10, 4.15 | Webb 12-9, 3.51 | Williamson 10-7, 5.11 | Papelbon 39 SV, 2.88 | Papelbon 66 G, 2.88 | MacFadden 63 G, 3.17 | Francisco 57 G, 3.82 | | 2014 101-61 | Halladay 8-10, 3.95 | Wainwright 17-9, 3.23 | Costello 15-10, 5.00 | Webb 10-9, 4.96 | Williamson 9-4, 5.21 | Broxton 33 SV, 4.88 | MacFadden 64 G, 4.23 | Broxton 63 G, 4.88 | Rodriguez 60 G, 4.17 | | 2015 100-62 | Halladay 11-8, 5.38 | Wainwright 16-7, 3.24 | Costello 13-6, 5.22 | Porcello 15-8, 4.97 | Williamson 9-9, 5.05 | Francisco 33 SV, 3.90 | Clark 69 G, 4.27 | Francisco 57 G, 3.90 | Thornton 57 G, 4.65 | | 2016 123-39 | Williamson 19-2, 3.73 | Halladay 19-3, 2.82 | Porcello 16-9, 3.68 | Wainwright 16-6, 2.56 | Jurrjens 8-4, 5.93 | Francisco 38 SV, 2.19 | Clark 64 G, 2.10 | Francisco 59 G, 2.19 | Sampson 54 G, 2.77 | | 2017 0-0 | | | | | | | | | | | | Top 5 pitchers in Games Started, Top pitcher in Saves and Top 3 pitchers in Games | |