Team pitching -- 2018 Seattle Mariners
Regular season -- as of 9/25/2018
| Primary |
 | Name | P | ERA | W | L | S | G | GS | CG | SHO | INN | H | R | ER | BB | K | HR | GDP | BF |
| | Morrow | mr | 0.56 | 8 | 1 | 3 | 45 | 0 | 0 | 0 | 48.0 | 19 | 3 | 3 | 10 | 56 | 0 | 5 | 167 |
| | Gearrin | mr | 0.72 | 1 | 0 | 0 | 23 | 0 | 0 | 0 | 25.0 | 13 | 2 | 2 | 15 | 26 | 2 | 2 | 100 |
| | Betances | mr | 1.19 | 3 | 3 | 35 | 73 | 0 | 0 | 0 | 68.1 | 23 | 10 | 9 | 42 | 117 | 2 | 3 | 270 |
| | Wittgren | mr | 2.45 | 2 | 0 | 1 | 13 | 0 | 0 | 0 | 18.1 | 10 | 6 | 5 | 11 | 18 | 0 | 0 | 76 |
| | Nicasio | mr | 2.51 | 8 | 3 | 3 | 70 | 0 | 0 | 0 | 75.1 | 63 | 24 | 21 | 18 | 59 | 8 | 5 | 308 |
| | Moore,A | sp | 2.75 | 4 | 2 | 0 | 9 | 5 | 1 | 0 | 39.1 | 28 | 12 | 12 | 5 | 26 | 7 | 2 | 150 |
| | Rusin* | mr | 2.77 | 4 | 4 | 3 | 69 | 0 | 0 | 0 | 97.1 | 91 | 36 | 30 | 35 | 70 | 11 | 14 | 408 |
| | Pomeranz* | sp | 2.77 | 16 | 7 | 0 | 32 | 32 | 2 | 1 | 204.1 | 172 | 70 | 63 | 90 | 193 | 14 | 32 | 854 |
| | Rogers* | mr | 3.04 | 4 | 0 | 3 | 62 | 0 | 0 | 0 | 50.1 | 45 | 19 | 17 | 21 | 38 | 5 | 5 | 213 |
| f | Rosenthal | mr | 3.10 | 4 | 3 | 1 | 61 | 0 | 0 | 0 | 58.0 | 42 | 22 | 20 | 27 | 87 | 5 | 3 | 237 |
| | Paxton* | sp | 3.36 | 10 | 4 | 0 | 27 | 27 | 0 | 0 | 168.2 | 171 | 69 | 63 | 51 | 186 | 13 | 12 | 722 |
| | Walker,T | sp | 3.47 | 10 | 9 | 0 | 30 | 30 | 0 | 0 | 186.2 | 166 | 86 | 72 | 72 | 179 | 16 | 14 | 797 |
| | Happ,J* | sp | 3.51 | 16 | 6 | 0 | 29 | 29 | 1 | 1 | 179.1 | 171 | 85 | 70 | 57 | 174 | 16 | 4 | 770 |
| | Odorizzi | sp | 4.49 | 13 | 6 | 0 | 29 | 29 | 1 | 0 | 176.1 | 140 | 96 | 88 | 93 | 169 | 42 | 6 | 760 |
| | Baez,P | mr | 6.31 | 2 | 5 | 1 | 31 | 0 | 0 | 0 | 35.2 | 36 | 25 | 25 | 13 | 26 | 11 | 1 | 158 |
| | Stephenson | mr | 6.47 | 1 | 2 | 0 | 8 | 8 | 0 | 0 | 40.1 | 49 | 31 | 29 | 26 | 37 | 8 | 7 | 191 |
| | Gonzales* | sp | 6.75 | 0 | 0 | 0 | 2 | 2 | 0 | 0 | 6.2 | 10 | 5 | 5 | 2 | 4 | 1 | 1 | 33 |
| | Bummer* | mr | 9.26 | 0 | 1 | 0 | 15 | 0 | 0 | 0 | 11.2 | 11 | 12 | 12 | 15 | 12 | 3 | 0 | 64 |
|   | Total |   | 3.30 | 106 | 56 | 50 | 162 | 162 | 5 | 14 | 1489.2 | 1260 | 613 | 546 | 603 | 1477 | 164 | 116 | 6278 |
| 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% |
| | Morrow | mr | 3 | 1 | 0 | 2 | 3 | 0 | 1 | 1 | 0 | 3.6 | 1.9 | 5.8 | 10.5 | 0.0 | 5.6 | 14.8 | .632 |
| | Gearrin | mr | 1 | 0 | 0 | 1 | 3 | 0 | 0 | 2 | 0 | 4.7 | 5.4 | 10.4 | 9.4 | 0.7 | 1.7 | 17.0 | .597 |
| | Betances | mr | 6 | 2 | 2 | 4 | 7 | 2 | 2 | 1 | 0 | 3.0 | 5.5 | 9.1 | 15.4 | 0.3 | 2.8 | 16.5 | .557 |
| | Wittgren | mr | 0 | 0 | 2 | 0 | 1 | 0 | 1 | 1 | 0 | 4.9 | 5.4 | 10.3 | 8.8 | 0.0 | 1.6 | 21.8 | .599 |
| | Nicasio | mr | 4 | 2 | 0 | 4 | 1 | 0 | 0 | 6 | 0 | 7.5 | 2.2 | 10.2 | 7.0 | 1.0 | 3.3 | 15.5 | .656 |
| | Moore,A | sp | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 6.4 | 1.1 | 7.6 | 5.9 | 1.6 | 5.2 | 56.4 | .681 |
| | Rusin* | mr | 2 | 1 | 1 | 2 | 3 | 0 | 2 | 1 | 0 | 8.4 | 3.2 | 11.8 | 6.5 | 1.0 | 2.0 | 22.0 | .632 |
| | Pomeranz* | sp | 8 | 3 | 2 | 8 | 8 | 0 | 3 | 5 | 0 | 7.6 | 4.0 | 11.9 | 8.5 | 0.6 | 2.1 | 102.1 | .603 |
| | Rogers* | mr | 0 | 0 | 5 | 2 | 0 | 0 | 0 | 3 | 0 | 8.0 | 3.8 | 12.2 | 6.8 | 0.9 | 1.8 | 12.3 | .594 |
| f | Rosenthal | mr | 3 | 4 | 0 | 2 | 1 | 0 | 1 | 0 | 0 | 6.5 | 4.2 | 11.0 | 13.5 | 0.8 | 3.2 | 16.0 | .612 |
| | Paxton* | sp | 0 | 2 | 3 | 4 | 20 | 1 | 1 | 2 | 0 | 9.1 | 2.7 | 12.1 | 9.9 | 0.7 | 3.6 | 103.4 | .641 |
| | Walker,T | sp | 11 | 1 | 1 | 9 | 5 | 2 | 4 | 6 | 0 | 8.0 | 3.5 | 11.9 | 8.6 | 0.8 | 2.5 | 104.5 | .614 |
| | Happ,J* | sp | 2 | 3 | 4 | 3 | 3 | 0 | 1 | 3 | 0 | 8.6 | 2.9 | 11.6 | 8.7 | 0.8 | 3.1 | 98.9 | .629 |
| | Odorizzi | sp | 3 | 1 | 0 | 3 | 0 | 0 | 5 | 3 | 0 | 7.1 | 4.7 | 12.0 | 8.6 | 2.1 | 1.8 | 100.3 | .587 |
| | Baez,P | mr | 0 | 0 | 1 | 2 | 0 | 1 | 0 | 1 | 0 | 9.1 | 3.3 | 12.9 | 6.6 | 2.8 | 2.0 | 19.2 | .612 |
| | Stephenson | mr | 2 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 10.9 | 5.8 | 16.7 | 8.3 | 1.8 | 1.4 | 93.9 | .562 |
| | Gonzales* | sp | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 13.5 | 2.7 | 17.5 | 5.4 | 1.3 | 2.0 | 58.0 | .655 |
| | Bummer* | mr | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 1 | 0 | 8.5 | 11.6 | 20.8 | 9.3 | 2.3 | 0.8 | 18.1 | .472 |
|   | Total |   | 45 | 22 | 21 | 48 | 58 | 7 | 21 | 37 | 0 | 7.6 | 3.6 | 11.5 | 8.9 | 1.0 | 2.4 |   | .612 |
| Analytical |
 | Name | P | OPS | WHIP | BIP | BABIP | TBW | /BF | TBWH | /BF | RC | RC27 | RCERA | CERA |
| | Morrow | mr | .317 | 0.60 | 99 | .192 | 30 | .180 | 32 | .192 | 3.9 | 0.7 | 0.65 | 0.73 |
| | Gearrin | mr | .570 | 1.12 | 56 | .196 | 38 | .380 | 39 | .390 | 7.8 | 2.9 | 2.51 | 2.40 |
| | Betances | mr | .402 | 0.95 | 105 | .200 | 74 | .274 | 78 | .289 | 11.4 | 1.5 | 1.35 | 1.39 |
| | Wittgren | mr | .502 | 1.15 | 47 | .213 | 25 | .329 | 25 | .329 | 4.8 | 2.4 | 2.12 | 1.65 |
| | Nicasio | mr | .651 | 1.08 | 219 | .251 | 123 | .399 | 127 | .412 | 29.4 | 3.4 | 3.16 | 2.81 |
| | Moore,A | sp | .586 | 0.84 | 112 | .188 | 58 | .387 | 58 | .387 | 10.9 | 2.4 | 2.24 | 2.02 |
| | Rusin* | mr | .682 | 1.29 | 290 | .276 | 170 | .417 | 172 | .422 | 40.7 | 3.7 | 3.39 | 3.75 |
| | Pomeranz* | sp | .649 | 1.28 | 549 | .288 | 338 | .396 | 346 | .405 | 77.4 | 3.4 | 3.07 | 3.34 |
| | Rogers* | mr | .688 | 1.31 | 147 | .272 | 90 | .423 | 92 | .432 | 22.3 | 4.0 | 3.58 | 3.58 |
| f | Rosenthal | mr | .596 | 1.19 | 116 | .319 | 88 | .371 | 90 | .380 | 19.1 | 3.0 | 2.66 | 2.94 |
| | Paxton* | sp | .676 | 1.32 | 468 | .338 | 292 | .404 | 296 | .410 | 75.2 | 4.0 | 3.61 | 3.65 |
| | Walker,T | sp | .701 | 1.27 | 521 | .288 | 347 | .435 | 356 | .447 | 89.3 | 4.3 | 3.87 | 3.46 |
| | Happ,J* | sp | .670 | 1.27 | 520 | .298 | 318 | .413 | 321 | .417 | 81.1 | 4.0 | 3.66 | 3.38 |
| | Odorizzi | sp | .761 | 1.32 | 453 | .216 | 387 | .509 | 390 | .513 | 97.8 | 5.0 | 4.49 | 4.40 |
| | Baez,P | mr | .872 | 1.37 | 106 | .236 | 91 | .576 | 93 | .589 | 26.0 | 6.5 | 5.90 | 5.54 |
| | Stephenson | mr | .941 | 1.86 | 120 | .342 | 116 | .607 | 116 | .607 | 34.5 | 7.5 | 6.93 | 7.22 |
| | Gonzales* | sp | .894 | 1.80 | 25 | .360 | 17 | .515 | 18 | .545 | 5.7 | 7.4 | 6.97 | 7.57 |
| | Bummer* | mr | .869 | 2.23 | 33 | .242 | 36 | .563 | 37 | .578 | 10.8 | 7.9 | 7.52 | 8.74 |
|   | Total |   | .671 | 1.25 | 3986 | .275 | 2638 | .420 | 2686 | .428 | 636.1 | 3.8 | 3.46 | 3.41 |
| Start |
 | Name | P | GS | CG | CG% | SHO | QS | QS% | RS | RS/G | RL | RLS | RL% |
| | Morrow | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 7 | 2 | .286 |
| | Gearrin | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 0 | .000 |
| | Betances | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 16 | 5 | .313 |
| | Wittgren | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 10 | 4 | .400 |
| | Nicasio | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 27 | 5 | .185 |
| | Moore,A | sp | 5 | 1 | .200 | 0 | 3 | .600 | 24 | 4.8 | 3 | 0 | .000 |
| | Rusin* | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 39 | 6 | .154 |
| | Pomeranz* | sp | 32 | 2 | .063 | 1 | 20 | .625 | 169 | 5.3 | 23 | 8 | .348 |
| | Rogers* | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 42 | 5 | .119 |
| f | Rosenthal | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 29 | 7 | .241 |
| | Paxton* | sp | 27 | 0 | .000 | 0 | 16 | .593 | 146 | 5.4 | 18 | 2 | .111 |
| | Walker,T | sp | 30 | 0 | .000 | 0 | 16 | .533 | 129 | 4.3 | 19 | 4 | .211 |
| | Happ,J* | sp | 29 | 1 | .034 | 1 | 17 | .586 | 154 | 5.3 | 20 | 8 | .400 |
| | Odorizzi | sp | 29 | 1 | .034 | 0 | 13 | .448 | 169 | 5.8 | 27 | 10 | .370 |
| | Baez,P | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 4 | .286 |
| | Stephenson | mr | 8 | 0 | .000 | 0 | 1 | .125 | 50 | 6.3 | 10 | 3 | .300 |
| | Gonzales* | sp | 2 | 0 | .000 | 0 | 0 | .000 | 8 | 4.0 | 0 | 0 | .000 |
| | Bummer* | mr | 0 | 0 | .000 | 0 | 0 | .000 | 0 | 0.0 | 14 | 4 | .286 |
|   | Total |   | 162 | 5 | .031 | 14 | 86 | .531 | 849 | 5.2 | 332 | 77 | .232 |
| Relief |
 | Name | P | SVO | S | SV% | BS | BS% | HLD | IR | IRS | IR% | G | GR | GF |
| | Morrow | mr | 4 | 3 | .750 | 1 | .250 | 6 | 37 | 4 | .108 | 45 | 45 | 14 |
| | Gearrin | mr | 1 | 0 | .000 | 1 | 1.000 | 5 | 24 | 5 | .208 | 23 | 23 | 5 |
| | Betances | mr | 41 | 35 | .854 | 5 | .122 | 1 | 29 | 6 | .207 | 73 | 73 | 60 |
| | Wittgren | mr | 1 | 1 | 1.000 | 0 | .000 | 2 | 9 | 0 | .000 | 13 | 13 | 2 |
| | Nicasio | mr | 12 | 3 | .250 | 8 | .667 | 15 | 49 | 15 | .306 | 70 | 70 | 19 |
| | Moore,A | sp | 0 | 0 | .000 | 0 | .000 | 0 | 3 | 0 | .000 | 9 | 4 | 3 |
| | Rusin* | mr | 5 | 3 | .600 | 2 | .400 | 12 | 50 | 14 | .280 | 69 | 69 | 25 |
| | Pomeranz* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 32 | 0 | 0 |
| | Rogers* | mr | 12 | 3 | .250 | 4 | .333 | 13 | 52 | 14 | .269 | 62 | 62 | 13 |
| f | Rosenthal | mr | 6 | 1 | .167 | 4 | .667 | 27 | 50 | 11 | .220 | 61 | 61 | 6 |
| | Paxton* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 27 | 0 | 0 |
| | Walker,T | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 30 | 0 | 0 |
| | Happ,J* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 29 | 0 | 0 |
| | Odorizzi | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 29 | 0 | 0 |
| | Baez,P | mr | 3 | 1 | .333 | 1 | .333 | 7 | 22 | 6 | .273 | 31 | 31 | 5 |
| | Stephenson | mr | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 8 | 0 | 0 |
| | Gonzales* | sp | 0 | 0 | .000 | 0 | .000 | 0 | 0 | 0 | .000 | 2 | 0 | 0 |
| | Bummer* | mr | 1 | 0 | .000 | 0 | .000 | 2 | 7 | 2 | .286 | 15 | 15 | 5 |
|   | Total |   | 86 | 50 | .581 | 26 | .302 | 90 | 332 | 77 | .232 | 162 | 466 | 157 |