Team pitching -- 2021 Seattle Mariners
Regular season -- as of 9/28/2021
| Primary |
 | Name | P | ERA | W | L | S | G | GS | CG | SHO | INN | H | R | ER | BB | K | HR | GDP | BF |
| | Wittgren | mr | 2.34 | 6 | 3 | 0 | 54 | 0 | 0 | 0 | 57.2 | 49 | 15 | 15 | 8 | 69 | 4 | 1 | 231 |
| n | Rogers,Ta* | cl | 2.76 | 1 | 4 | 31 | 50 | 0 | 0 | 0 | 49.0 | 36 | 17 | 15 | 10 | 56 | 2 | 6 | 193 |
| | Stephenson,R | mr | 2.85 | 7 | 2 | 2 | 57 | 0 | 0 | 0 | 66.1 | 50 | 22 | 21 | 27 | 93 | 9 | 2 | 277 |
| | Stammen | mr | 2.97 | 2 | 0 | 2 | 58 | 0 | 0 | 0 | 72.2 | 71 | 27 | 24 | 15 | 66 | 7 | 9 | 300 |
| | Lockett | sp | 3.00 | 0 | 1 | 0 | 15 | 0 | 0 | 0 | 21.0 | 26 | 11 | 7 | 5 | 16 | 2 | 0 | 95 |
| | Warren,Ar | mr | 3.38 | 1 | 0 | 1 | 17 | 0 | 0 | 0 | 16.0 | 13 | 6 | 6 | 8 | 20 | 2 | 3 | 67 |
| n | Paxton* | sp | 3.58 | 5 | 5 | 0 | 17 | 17 | 0 | 0 | 93.0 | 83 | 40 | 37 | 26 | 104 | 12 | 8 | 383 |
| n | Giles | cl | 3.64 | 2 | 2 | 0 | 41 | 0 | 0 | 0 | 42.0 | 36 | 17 | 17 | 17 | 50 | 8 | 3 | 176 |
| | Devenski | mr | 3.68 | 1 | 0 | 2 | 53 | 0 | 0 | 0 | 66.0 | 54 | 34 | 27 | 12 | 66 | 14 | 4 | 269 |
| | Samardzija | sp | 3.80 | 11 | 9 | 0 | 25 | 25 | 1 | 0 | 163.1 | 158 | 81 | 69 | 46 | 126 | 28 | 10 | 693 |
| | Romero,J* | sp | 3.80 | 1 | 2 | 0 | 4 | 4 | 0 | 0 | 23.2 | 21 | 12 | 10 | 11 | 22 | 3 | 1 | 102 |
| | Odorizzi | sp | 4.35 | 11 | 10 | 0 | 28 | 28 | 1 | 1 | 171.2 | 162 | 93 | 83 | 48 | 166 | 29 | 9 | 713 |
| n | Bummer* | mr | 4.64 | 0 | 4 | 1 | 47 | 0 | 0 | 0 | 42.2 | 32 | 23 | 22 | 21 | 39 | 2 | 7 | 179 |
| | Dunn,J | sp | 4.84 | 7 | 7 | 0 | 18 | 18 | 0 | 0 | 100.1 | 97 | 58 | 54 | 37 | 90 | 12 | 6 | 433 |
| | Gonzales* | sp | 5.21 | 7 | 15 | 0 | 28 | 28 | 0 | 0 | 178.0 | 186 | 106 | 103 | 44 | 153 | 27 | 11 | 758 |
| | Otero | mr | 5.40 | 1 | 0 | 1 | 9 | 0 | 0 | 0 | 10.0 | 16 | 6 | 6 | 0 | 6 | 3 | 1 | 45 |
| | Clippard | mr | 5.57 | 1 | 2 | 3 | 32 | 0 | 0 | 0 | 32.1 | 28 | 21 | 20 | 15 | 37 | 7 | 1 | 144 |
| | Hernandez,F | sp | 5.86 | 3 | 6 | 0 | 12 | 12 | 0 | 0 | 55.1 | 76 | 46 | 36 | 20 | 39 | 8 | 8 | 258 |
| | Leake | sp | 5.92 | 10 | 10 | 0 | 25 | 25 | 1 | 1 | 153.2 | 199 | 116 | 101 | 31 | 94 | 23 | 14 | 691 |
| | Canning | sp | 7.56 | 0 | 3 | 0 | 5 | 5 | 0 | 0 | 25.0 | 31 | 25 | 21 | 11 | 23 | 3 | 2 | 118 |
|   | Total |   | 4.34 | 77 | 85 | 43 | 162 | 162 | 3 | 6 | 1439.2 | 1424 | 776 | 694 | 412 | 1335 | 205 | 106 | 6125 |
| Secondary |
 | Name | P | SB | CS | IW | HBP | WP | BK | SH | SF | CI | H/9 | BB/9 | R/9 | K/9 | HR/9 | K/BB | NP/G | STR% |
| | Wittgren | mr | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 7.6 | 1.2 | 9.1 | 10.8 | 0.6 | 8.6 | 15.9 | .674 |
| n | Rogers,Ta* | cl | 2 | 0 | 1 | 4 | 1 | 0 | 0 | 0 | 0 | 6.6 | 1.8 | 9.2 | 10.3 | 0.4 | 5.6 | 14.7 | .668 |
| | Stephenson,R | mr | 1 | 1 | 2 | 1 | 4 | 0 | 0 | 0 | 0 | 6.8 | 3.7 | 10.6 | 12.6 | 1.2 | 3.4 | 19.6 | .613 |
| | Stammen | mr | 1 | 1 | 0 | 2 | 2 | 0 | 0 | 2 | 0 | 8.8 | 1.9 | 10.9 | 8.2 | 0.9 | 4.4 | 18.9 | .642 |
| | Lockett | sp | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 11.1 | 2.1 | 13.7 | 6.9 | 0.9 | 3.2 | 24.1 | .604 |
| | Warren,Ar | mr | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 7.3 | 4.5 | 11.8 | 11.3 | 1.1 | 2.5 | 16.0 | .603 |
| n | Paxton* | sp | 4 | 1 | 0 | 1 | 7 | 1 | 0 | 0 | 0 | 8.0 | 2.5 | 10.6 | 10.1 | 1.2 | 4.0 | 87.0 | .635 |
| n | Giles | cl | 2 | 0 | 1 | 2 | 5 | 0 | 0 | 0 | 0 | 7.7 | 3.6 | 11.8 | 10.7 | 1.7 | 2.9 | 16.1 | .637 |
| | Devenski | mr | 3 | 0 | 0 | 3 | 2 | 0 | 0 | 1 | 0 | 7.4 | 1.6 | 9.4 | 9.0 | 1.9 | 5.5 | 18.9 | .676 |
| | Samardzija | sp | 14 | 3 | 0 | 4 | 5 | 0 | 0 | 5 | 0 | 8.7 | 2.5 | 11.5 | 6.9 | 1.5 | 2.7 | 99.2 | .639 |
| | Romero,J* | sp | 2 | 0 | 0 | 0 | 3 | 0 | 0 | 2 | 0 | 8.0 | 4.2 | 12.2 | 8.4 | 1.1 | 2.0 | 96.0 | .591 |
| | Odorizzi | sp | 5 | 3 | 0 | 0 | 6 | 1 | 0 | 7 | 0 | 8.5 | 2.5 | 11.0 | 8.7 | 1.5 | 3.5 | 96.9 | .633 |
| n | Bummer* | mr | 1 | 1 | 0 | 2 | 4 | 1 | 0 | 1 | 0 | 6.8 | 4.4 | 11.6 | 8.2 | 0.4 | 1.9 | 15.6 | .602 |
| | Dunn,J | sp | 4 | 4 | 0 | 7 | 7 | 0 | 0 | 3 | 0 | 8.7 | 3.3 | 12.6 | 8.1 | 1.1 | 2.4 | 95.4 | .606 |
| | Gonzales* | sp | 5 | 4 | 1 | 7 | 3 | 1 | 0 | 3 | 0 | 9.4 | 2.2 | 12.0 | 7.7 | 1.4 | 3.5 | 99.6 | .642 |
| | Otero | mr | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14.4 | 0.0 | 14.4 | 5.4 | 2.7 | 99.0 | 14.7 | .720 |
| | Clippard | mr | 4 | 0 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 7.8 | 4.2 | 13.1 | 10.3 | 1.9 | 2.5 | 17.7 | .597 |
| | Hernandez,F | sp | 3 | 1 | 0 | 2 | 1 | 0 | 0 | 2 | 0 | 12.4 | 3.3 | 15.9 | 6.3 | 1.3 | 2.0 | 79.5 | .607 |
| | Leake | sp | 11 | 6 | 1 | 14 | 3 | 2 | 0 | 5 | 0 | 11.7 | 1.8 | 14.3 | 5.5 | 1.3 | 3.0 | 94.6 | .661 |
| | Canning | sp | 5 | 2 | 0 | 5 | 6 | 0 | 0 | 3 | 0 | 11.2 | 4.0 | 16.9 | 8.3 | 1.1 | 2.1 | 89.0 | .589 |
|   | Total |   | 68 | 29 | 6 | 60 | 61 | 6 | 0 | 38 | 0 | 8.9 | 2.6 | 11.9 | 8.3 | 1.3 | 3.2 |   | .635 |
| Analytical |
 | Name | P | OPS | WHIP | BIP | BABIP | TBW | /BF | TBWH | /BF | RC | RC27 | RCERA | CERA |
| | Wittgren | mr | .578 | 0.99 | 149 | .302 | 80 | .346 | 81 | .351 | 18.3 | 2.8 | 2.57 | 2.17 |
| n | Rogers,Ta* | cl | .544 | 0.94 | 121 | .281 | 61 | .316 | 65 | .337 | 12.6 | 2.3 | 2.09 | 1.93 |
| | Stephenson,R | mr | .639 | 1.16 | 147 | .279 | 116 | .419 | 117 | .422 | 26.1 | 3.5 | 3.18 | 2.97 |
| | Stammen | mr | .688 | 1.18 | 210 | .305 | 126 | .420 | 128 | .427 | 30.4 | 3.7 | 3.39 | 3.29 |
| | Lockett | sp | .785 | 1.48 | 71 | .338 | 44 | .463 | 45 | .474 | 14.2 | 6.1 | 5.47 | 4.82 |
| | Warren,Ar | mr | .635 | 1.31 | 37 | .297 | 27 | .403 | 27 | .403 | 5.3 | 2.9 | 2.71 | 3.65 |
| n | Paxton* | sp | .703 | 1.17 | 240 | .296 | 174 | .454 | 175 | .457 | 41.4 | 4.0 | 3.61 | 3.25 |
| n | Giles | cl | .739 | 1.26 | 99 | .283 | 84 | .477 | 86 | .489 | 21.5 | 4.7 | 4.14 | 4.12 |
| | Devenski | mr | .652 | 1.00 | 174 | .230 | 112 | .416 | 115 | .428 | 25.6 | 3.4 | 3.14 | 3.04 |
| | Samardzija | sp | .741 | 1.25 | 489 | .266 | 327 | .472 | 331 | .478 | 85.5 | 4.6 | 4.24 | 3.95 |
| | Romero,J* | sp | .685 | 1.35 | 66 | .273 | 44 | .431 | 44 | .431 | 11.5 | 4.4 | 3.95 | 3.85 |
| | Odorizzi | sp | .731 | 1.22 | 470 | .283 | 335 | .470 | 335 | .470 | 84.9 | 4.5 | 4.01 | 3.74 |
| n | Bummer* | mr | .598 | 1.24 | 115 | .261 | 66 | .369 | 68 | .380 | 13.7 | 2.8 | 2.59 | 2.91 |
| | Dunn,J | sp | .743 | 1.34 | 287 | .296 | 198 | .457 | 205 | .473 | 53.3 | 4.8 | 4.30 | 4.18 |
| | Gonzales* | sp | .756 | 1.29 | 527 | .302 | 356 | .470 | 363 | .479 | 96.4 | 4.9 | 4.39 | 4.21 |
| | Otero | mr | .978 | 1.60 | 36 | .361 | 28 | .622 | 28 | .622 | 9.3 | 8.4 | 7.56 | 7.50 |
| | Clippard | mr | .758 | 1.33 | 81 | .259 | 69 | .479 | 73 | .507 | 19.5 | 5.4 | 4.88 | 4.80 |
| | Hernandez,F | sp | .876 | 1.73 | 189 | .360 | 136 | .527 | 138 | .535 | 42.9 | 6.9 | 6.28 | 6.65 |
| | Leake | sp | .851 | 1.50 | 529 | .333 | 350 | .507 | 364 | .527 | 109.8 | 6.3 | 5.79 | 5.71 |
| | Canning | sp | .893 | 1.68 | 76 | .368 | 60 | .508 | 65 | .551 | 20.9 | 7.5 | 6.77 | 6.74 |
|   | Total |   | .734 | 1.28 | 4113 | .296 | 2793 | .456 | 2853 | .466 | 735.2 | 4.5 | 4.14 | 3.99 |
| Start |
 | Name | P | GS | CG | CG% | SHO | QS | QS% | RS | RS/G | RL | RLS | RL% |
| | Wittgren | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 3 | .167 |
| n | Rogers,Ta* | cl | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 1 | .333 |
| | Stephenson,R | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 5 | .313 |
| | Stammen | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 5 | .278 |
| | Lockett | sp | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 0 | .000 |
| | Warren,Ar | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 4 | 1 | .250 |
| n | Paxton* | sp | 17 | 0 | .000 | 0 | 6 | .353 | 67 | 3.9 | 8 | 4 | .500 |
| n | Giles | cl | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 1 | .091 |
| | Devenski | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 9 | 6 | .667 |
| | Samardzija | sp | 25 | 1 | .040 | 0 | 16 | .640 | 111 | 4.4 | 10 | 2 | .200 |
| | Romero,J* | sp | 4 | 0 | .000 | 0 | 2 | .500 | 13 | 3.3 | 5 | 1 | .200 |
| | Odorizzi | sp | 28 | 1 | .036 | 1 | 15 | .536 | 134 | 4.8 | 12 | 5 | .417 |
| n | Bummer* | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 25 | 12 | .480 |
| | Dunn,J | sp | 18 | 0 | .000 | 0 | 7 | .389 | 86 | 4.8 | 16 | 4 | .250 |
| | Gonzales* | sp | 28 | 0 | .000 | 0 | 14 | .500 | 94 | 3.4 | 14 | 7 | .500 |
| | Otero | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 0 | .000 |
| | Clippard | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 11 | 5 | .455 |
| | Hernandez,F | sp | 12 | 0 | .000 | 0 | 4 | .333 | 57 | 4.8 | 15 | 9 | .600 |
| | Leake | sp | 25 | 1 | .040 | 1 | 9 | .360 | 126 | 5.0 | 18 | 8 | .444 |
| | Canning | sp | 5 | 0 | .000 | 0 | 0 | .000 | 16 | 3.2 | 5 | 2 | .400 |
|   | Total |   | 162 | 3 | .019 | 6 | 73 | .451 | 704 | 4.3 | 227 | 81 | .357 |
| Relief |
 | Name | P | SVO | S | SV% | BS | BS% | HLD | IR | IRS | IR% | G | GR | GF |
| | Wittgren | mr | 4 | 0 | .000 | 4 | 1.000 | 12 | 27 | 9 | .333 | 54 | 54 | 13 |
| n | Rogers,Ta* | cl | 36 | 31 | .861 | 5 | .139 | 1 | 28 | 8 | .286 | 50 | 50 | 45 |
| | Stephenson,R | mr | 5 | 2 | .400 | 2 | .400 | 9 | 26 | 8 | .308 | 57 | 57 | 21 |
| | Stammen | mr | 3 | 2 | .667 | 1 | .333 | 9 | 32 | 13 | .406 | 58 | 58 | 20 |
| | Lockett | sp | 0 | 0 | .000 | 0 | .000 | 1 | 16 | 4 | .250 | 15 | 15 | 3 |
| | Warren,Ar | mr | 1 | 1 | 1.000 | 0 | .000 | 1 | 11 | 3 | .273 | 17 | 17 | 6 |
| n | Paxton* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 17 | 0 | 0 |
| n | Giles | cl | 3 | 0 | .000 | 3 | 1.000 | 13 | 16 | 8 | .500 | 41 | 41 | 12 |
| | Devenski | mr | 4 | 2 | .500 | 2 | .500 | 7 | 30 | 15 | .500 | 53 | 53 | 12 |
| | Samardzija | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 |
| | Romero,J* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 4 | 0 | 0 |
| | Odorizzi | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 28 | 0 | 0 |
| n | Bummer* | mr | 4 | 1 | .250 | 3 | .750 | 17 | 19 | 5 | .263 | 47 | 47 | 8 |
| | Dunn,J | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 18 | 0 | 0 |
| | Gonzales* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 28 | 0 | 0 |
| | Otero | mr | 1 | 1 | 1.000 | 0 | .000 | 0 | 9 | 3 | .333 | 9 | 9 | 2 |
| | Clippard | mr | 4 | 3 | .750 | 1 | .250 | 3 | 13 | 5 | .385 | 32 | 32 | 17 |
| | Hernandez,F | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 12 | 0 | 0 |
| | Leake | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 25 | 0 | 0 |
| | Canning | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 5 | 0 | 0 |
|   | Total |   | 65 | 43 | .662 | 21 | .323 | 73 | 227 | 81 | .357 | 162 | 433 | 159 |