Team pitching -- 2020 Seattle Mariners
Regular season -- as of 9/29/2020
| Primary |
 | Name | P | ERA | W | L | S | G | GS | CG | SHO | INN | H | R | ER | BB | K | HR | GDP | BF |
| n | Edwards,C | mr | 2.08 | 0 | 1 | 0 | 12 | 0 | 0 | 0 | 13.0 | 4 | 3 | 3 | 4 | 13 | 2 | 0 | 47 |
| | Wittgren | mr | 2.11 | 3 | 1 | 2 | 61 | 0 | 0 | 0 | 68.1 | 48 | 18 | 16 | 20 | 71 | 9 | 6 | 270 |
| | Bummer* | mr | 2.13 | 4 | 2 | 0 | 69 | 0 | 0 | 0 | 76.0 | 54 | 18 | 18 | 33 | 57 | 6 | 16 | 298 |
| | Rogers,Ta* | cl | 2.42 | 2 | 4 | 36 | 71 | 0 | 0 | 0 | 81.2 | 59 | 23 | 22 | 18 | 105 | 5 | 7 | 320 |
| f | Baez,P | mr | 2.72 | 5 | 4 | 0 | 70 | 0 | 0 | 0 | 82.2 | 49 | 26 | 25 | 39 | 77 | 3 | 12 | 329 |
| | Morgan* | mr | 2.80 | 3 | 1 | 3 | 48 | 0 | 0 | 0 | 35.1 | 26 | 11 | 11 | 8 | 42 | 1 | 2 | 140 |
| | Walker,T | sp | 3.28 | 2 | 1 | 0 | 5 | 5 | 0 | 0 | 24.2 | 15 | 9 | 9 | 16 | 12 | 0 | 5 | 100 |
| f | Dunn,J | sp | 3.60 | 1 | 1 | 0 | 8 | 8 | 0 | 0 | 35.0 | 34 | 18 | 14 | 23 | 31 | 4 | 5 | 157 |
| f | Stephenson | mr | 3.93 | 9 | 4 | 2 | 55 | 0 | 0 | 0 | 73.1 | 55 | 33 | 32 | 19 | 86 | 13 | 4 | 291 |
| | Odorizzi | sp | 4.05 | 11 | 7 | 0 | 30 | 30 | 2 | 2 | 184.2 | 188 | 84 | 83 | 85 | 192 | 18 | 10 | 817 |
| | Milone* | mr | 4.62 | 8 | 8 | 1 | 20 | 19 | 0 | 0 | 120.2 | 124 | 66 | 62 | 30 | 92 | 27 | 9 | 510 |
| | Paxton* | sp | 5.04 | 11 | 10 | 0 | 29 | 29 | 1 | 1 | 171.1 | 160 | 100 | 96 | 83 | 220 | 32 | 13 | 744 |
| | Gonzales* | sp | 5.12 | 15 | 12 | 0 | 34 | 34 | 6 | 2 | 221.1 | 268 | 128 | 126 | 56 | 161 | 28 | 25 | 970 |
| | Fiers | sp | 5.48 | 3 | 3 | 0 | 7 | 7 | 1 | 1 | 46.0 | 41 | 33 | 28 | 17 | 30 | 10 | 6 | 198 |
| | Happ,JA* | sp | 6.07 | 8 | 13 | 0 | 30 | 30 | 0 | 0 | 173.1 | 188 | 127 | 117 | 59 | 173 | 46 | 19 | 759 |
| | Bedrosian | mr | 7.50 | 3 | 1 | 0 | 20 | 0 | 0 | 0 | 24.0 | 28 | 21 | 20 | 16 | 27 | 2 | 0 | 117 |
| | Warren,Ar | mr | 7.71 | 1 | 0 | 0 | 7 | 0 | 0 | 0 | 4.2 | 8 | 4 | 4 | 0 | 4 | 2 | 0 | 21 |
| | Zimmer,K | mr | 13.85 | 0 | 0 | 0 | 14 | 0 | 0 | 0 | 13.0 | 24 | 20 | 20 | 12 | 17 | 3 | 1 | 75 |
|   | Total |   | 4.39 | 89 | 73 | 44 | 162 | 162 | 10 | 12 | 1449.0 | 1373 | 742 | 706 | 538 | 1410 | 211 | 140 | 6163 |
| 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% |
| n | Edwards,C | mr | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2.8 | 2.8 | 5.5 | 9.0 | 1.4 | 3.3 | 18.8 | .564 |
| | Wittgren | mr | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 2 | 0 | 6.3 | 2.6 | 9.1 | 9.4 | 1.2 | 3.5 | 16.8 | .636 |
| | Bummer* | mr | 1 | 2 | 2 | 0 | 7 | 0 | 1 | 2 | 0 | 6.4 | 3.9 | 10.3 | 6.8 | 0.7 | 1.7 | 15.6 | .604 |
| | Rogers,Ta* | cl | 1 | 1 | 0 | 5 | 0 | 0 | 0 | 1 | 0 | 6.5 | 2.0 | 9.0 | 11.6 | 0.6 | 5.8 | 17.0 | .664 |
| f | Baez,P | mr | 1 | 1 | 2 | 7 | 3 | 0 | 1 | 4 | 0 | 5.3 | 4.2 | 10.3 | 8.4 | 0.3 | 2.0 | 18.4 | .581 |
| | Morgan* | mr | 4 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 6.6 | 2.0 | 9.4 | 10.7 | 0.3 | 5.3 | 10.7 | .627 |
| | Walker,T | sp | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 5.5 | 5.8 | 11.3 | 4.4 | 0.0 | 0.8 | 66.6 | .562 |
| f | Dunn,J | sp | 3 | 3 | 1 | 0 | 1 | 0 | 1 | 2 | 0 | 8.7 | 5.9 | 14.7 | 8.0 | 1.0 | 1.3 | 74.1 | .570 |
| f | Stephenson | mr | 8 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 6.8 | 2.3 | 9.2 | 10.6 | 1.6 | 4.5 | 19.3 | .634 |
| | Odorizzi | sp | 4 | 2 | 2 | 5 | 2 | 0 | 0 | 6 | 0 | 9.2 | 4.1 | 13.5 | 9.4 | 0.9 | 2.3 | 103.9 | .605 |
| | Milone* | mr | 1 | 0 | 0 | 2 | 1 | 0 | 2 | 5 | 0 | 9.2 | 2.2 | 11.6 | 6.9 | 2.0 | 3.1 | 89.3 | .656 |
| | Paxton* | sp | 5 | 4 | 0 | 5 | 12 | 1 | 1 | 5 | 0 | 8.4 | 4.4 | 13.0 | 11.6 | 1.7 | 2.7 | 100.4 | .605 |
| | Gonzales* | sp | 3 | 1 | 0 | 12 | 0 | 0 | 3 | 5 | 0 | 10.9 | 2.3 | 13.7 | 6.5 | 1.1 | 2.9 | 100.3 | .639 |
| | Fiers | sp | 1 | 0 | 1 | 3 | 4 | 0 | 0 | 0 | 0 | 8.0 | 3.3 | 11.9 | 5.9 | 2.0 | 1.8 | 104.0 | .602 |
| | Happ,JA* | sp | 4 | 2 | 2 | 6 | 4 | 0 | 2 | 2 | 0 | 9.8 | 3.1 | 13.1 | 9.0 | 2.4 | 2.9 | 94.2 | .629 |
| | Bedrosian | mr | 0 | 2 | 1 | 2 | 7 | 0 | 0 | 2 | 0 | 10.5 | 6.0 | 17.3 | 10.1 | 0.8 | 1.7 | 22.1 | .582 |
| | Warren,Ar | mr | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 15.4 | 0.0 | 15.4 | 7.7 | 3.9 | 99.0 | 10.9 | .566 |
| | Zimmer,K | mr | 2 | 0 | 0 | 1 | 4 | 0 | 0 | 1 | 0 | 16.6 | 8.3 | 25.6 | 11.8 | 2.1 | 1.4 | 22.5 | .537 |
|   | Total |   | 38 | 19 | 14 | 53 | 49 | 2 | 12 | 39 | 0 | 8.5 | 3.3 | 12.2 | 8.8 | 1.3 | 2.6 |   | .618 |
| Analytical |
 | Name | P | OPS | WHIP | BIP | BABIP | TBW | /BF | TBWH | /BF | RC | RC27 | RCERA | CERA |
| n | Edwards,C | mr | .426 | 0.62 | 28 | .071 | 15 | .319 | 15 | .319 | 2.0 | 1.4 | 1.28 | 1.02 |
| | Wittgren | mr | .606 | 1.00 | 169 | .231 | 106 | .393 | 107 | .396 | 21.6 | 2.8 | 2.57 | 2.36 |
| | Bummer* | mr | .591 | 1.14 | 202 | .238 | 111 | .372 | 111 | .372 | 20.4 | 2.4 | 2.18 | 2.63 |
| | Rogers,Ta* | cl | .550 | 0.94 | 187 | .289 | 105 | .328 | 110 | .344 | 21.7 | 2.4 | 2.16 | 2.01 |
| f | Baez,P | mr | .563 | 1.06 | 203 | .227 | 115 | .350 | 122 | .371 | 22.6 | 2.5 | 2.21 | 2.17 |
| | Morgan* | mr | .536 | 0.96 | 86 | .291 | 43 | .307 | 46 | .329 | 9.9 | 2.6 | 2.27 | 1.94 |
| | Walker,T | sp | .536 | 1.26 | 72 | .208 | 35 | .350 | 35 | .350 | 6.0 | 2.2 | 1.98 | 2.35 |
| f | Dunn,J | sp | .785 | 1.63 | 99 | .303 | 78 | .497 | 78 | .497 | 19.9 | 5.0 | 4.61 | 5.05 |
| f | Stephenson | mr | .675 | 1.01 | 172 | .244 | 132 | .454 | 133 | .457 | 29.4 | 3.6 | 3.24 | 2.72 |
| | Odorizzi | sp | .730 | 1.48 | 517 | .329 | 366 | .448 | 371 | .454 | 100.6 | 4.9 | 4.41 | 4.47 |
| | Milone* | mr | .817 | 1.28 | 359 | .270 | 270 | .529 | 272 | .533 | 72.8 | 5.4 | 4.89 | 4.51 |
| | Paxton* | sp | .791 | 1.42 | 404 | .317 | 380 | .511 | 385 | .517 | 101.1 | 5.3 | 4.78 | 4.80 |
| | Gonzales* | sp | .820 | 1.46 | 713 | .337 | 478 | .493 | 490 | .505 | 142.3 | 5.8 | 5.21 | 5.16 |
| | Fiers | sp | .780 | 1.26 | 138 | .225 | 101 | .510 | 104 | .525 | 24.9 | 4.7 | 4.38 | 4.31 |
| | Happ,JA* | sp | .865 | 1.42 | 475 | .299 | 425 | .560 | 431 | .568 | 118.2 | 6.1 | 5.52 | 5.63 |
| | Bedrosian | mr | .795 | 1.83 | 70 | .371 | 55 | .470 | 57 | .487 | 16.7 | 6.2 | 5.64 | 6.17 |
| | Warren,Ar | mr | 1.328 | 1.71 | 15 | .400 | 18 | .857 | 18 | .857 | 7.3 | 15.1 | 12.59 | 9.59 |
| | Zimmer,K | mr | 1.215 | 2.77 | 42 | .500 | 56 | .747 | 57 | .760 | 23.5 | 16.3 | 14.64 | 13.59 |
|   | Total |   | .745 | 1.32 | 3951 | .294 | 2889 | .469 | 2942 | .477 | 746.0 | 4.6 | 4.17 | 4.14 |
| Start |
 | Name | P | GS | CG | CG% | SHO | QS | QS% | RS | RS/G | RL | RLS | RL% |
| n | Edwards,C | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 2 | 1 | .500 |
| | Wittgren | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 1 | .067 |
| | Bummer* | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 30 | 7 | .233 |
| | Rogers,Ta* | cl | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 3 | 1 | .333 |
| f | Baez,P | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 21 | 6 | .286 |
| | Morgan* | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 3 | .188 |
| | Walker,T | sp | 5 | 0 | .000 | 0 | 1 | .200 | 20 | 4.0 | 6 | 3 | .500 |
| f | Dunn,J | sp | 8 | 0 | .000 | 0 | 1 | .125 | 42 | 5.3 | 6 | 1 | .167 |
| f | Stephenson | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 4 | .267 |
| | Odorizzi | sp | 30 | 2 | .067 | 2 | 12 | .400 | 160 | 5.3 | 28 | 5 | .179 |
| | Milone* | mr | 19 | 0 | .000 | 0 | 9 | .474 | 92 | 4.8 | 12 | 3 | .250 |
| | Paxton* | sp | 29 | 1 | .034 | 1 | 14 | .483 | 145 | 5.0 | 9 | 2 | .222 |
| | Gonzales* | sp | 34 | 6 | .176 | 2 | 15 | .441 | 167 | 4.9 | 29 | 10 | .345 |
| | Fiers | sp | 7 | 1 | .143 | 1 | 1 | .143 | 38 | 5.4 | 2 | 1 | .500 |
| | Happ,JA* | sp | 30 | 0 | .000 | 0 | 12 | .400 | 155 | 5.2 | 22 | 12 | .545 |
| | Bedrosian | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 18 | 10 | .556 |
| | Warren,Ar | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 1 | 0 | .000 |
| | Zimmer,K | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 15 | 5 | .333 |
|   | Total |   | 162 | 10 | .062 | 12 | 65 | .401 | 819 | 5.1 | 250 | 75 | .300 |
| Relief |
 | Name | P | SVO | S | SV% | BS | BS% | HLD | IR | IRS | IR% | G | GR | GF |
| n | Edwards,C | mr | 0 | 0 | .000 | 0 | .000 | 1 | 2 | 1 | .500 | 12 | 12 | 3 |
| | Wittgren | mr | 3 | 2 | .667 | 0 | .000 | 15 | 34 | 12 | .353 | 61 | 61 | 9 |
| | Bummer* | mr | 3 | 0 | .000 | 1 | .333 | 16 | 49 | 14 | .286 | 69 | 69 | 14 |
| | Rogers,Ta* | cl | 39 | 36 | .923 | 3 | .077 | 0 | 33 | 9 | .273 | 71 | 71 | 66 |
| f | Baez,P | mr | 2 | 0 | .000 | 2 | 1.000 | 17 | 33 | 9 | .273 | 70 | 70 | 20 |
| | Morgan* | mr | 5 | 3 | .600 | 0 | .000 | 8 | 35 | 6 | .171 | 48 | 48 | 15 |
| | Walker,T | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 5 | 0 | 0 |
| f | Dunn,J | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 8 | 0 | 0 |
| f | Stephenson | mr | 3 | 2 | .667 | 1 | .333 | 9 | 33 | 9 | .273 | 55 | 55 | 15 |
| | Odorizzi | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 |
| | Milone* | mr | 1 | 1 | 1.000 | 0 | .000 | 0 | 1 | 1 | 1.000 | 20 | 1 | 1 |
| | Paxton* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 29 | 0 | 0 |
| | Gonzales* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 34 | 0 | 0 |
| | Fiers | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 7 | 0 | 0 |
| | Happ,JA* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 |
| | Bedrosian | mr | 3 | 0 | .000 | 3 | 1.000 | 3 | 13 | 7 | .538 | 20 | 20 | 5 |
| | Warren,Ar | mr | 1 | 0 | .000 | 1 | 1.000 | 1 | 5 | 4 | .800 | 7 | 7 | 1 |
| | Zimmer,K | mr | 3 | 0 | .000 | 1 | .333 | 3 | 12 | 3 | .250 | 14 | 14 | 3 |
|   | Total |   | 63 | 44 | .698 | 12 | .190 | 73 | 250 | 75 | .300 | 162 | 428 | 152 |