| | | | | | | | | | 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 |  | Texas Rangers Pitching Staff Chart |
| | Year | Starting Pitchers | Closer | Bullpen | | 2010 79-83 | Lowe 13-12, 5.76 | Marquis 10-19, 5.34 | Peavy 13-14, 3.91 | VandenHurk 11-11, 4.20 | Davis 4-5, 4.62 | Betancourt 36 SV, 2.21 | Arias 69 G, 1.95 | Cameron 66 G, 3.18 | Affeldt 63 G, 3.24 | | 2011 93-69 | Peavy 20-11, 3.84 | Marquis 16-15, 2.95 | VandenHurk 8-5, 3.05 | Ríos 6-6, 4.52 | Davis 3-8, 4.78 | Betancourt 37 SV, 2.30 | DiFelice 62 G, 3.57 | Betancourt 61 G, 2.30 | Arias 57 G, 2.35 | | 2012 74-88 | Peavy 12-12, 4.04 | VandenHurk 11-11, 5.71 | Maine 7-15, 4.36 | Marquis 9-13, 4.80 | Davis 5-9, 5.19 | Betancourt 32 SV, 2.18 | Arias 66 G, 2.23 | Belisle 62 G, 3.71 | Berg 59 G, 5.29 | | 2013 69-93 | Peavy 14-10, 3.16 | Marquis 12-15, 3.57 | VandenHurk 7-10, 4.60 | Maine 10-11, 4.83 | Greene 5-13, 6.23 | Betancourt 29 SV, 3.36 | Arias 64 G, 3.51 | Narveson 61 G, 7.48 | Carlson 55 G, 3.28 | | 2014 85-77 | Peavy 13-11, 4.27 | Grady 15-13, 4.62 | Maine 9-11, 3.77 | Greene 7-13, 6.93 | Gorman 3-7, 5.30 | Betancourt 41 SV, 2.22 | Wade 67 G, 4.36 | Betancourt 64 G, 2.22 | Arias 61 G, 1.59 | | 2015 74-88 | Vazquez 10-17, 5.38 | Peavy 7-11, 4.60 | Webb 8-12, 4.13 | Jackson 9-12, 5.12 | Maine 8-4, 4.17 | Arias 22 SV, 2.98 | Arias 55 G, 2.98 | Betancourt 55 G, 3.34 | Ortíz 48 G, 5.82 | | 2016 69-93 | Jackson 7-11, 5.26 | Grady 13-13, 4.58 | Peavy 6-13, 5.64 | Maine 4-14, 7.34 | Webb 7-13, 5.57 | Arias 20 SV, 3.89 | Gray 67 G, 2.85 | Wade 64 G, 4.68 | Arias 58 G, 3.89 | | 2017 0-0 | | | | | | | | | | | | Top 5 pitchers in Games Started, Top pitcher in Saves and Top 3 pitchers in Games | |