Randy Johnson has the best career ERA for the Mariners when starting 100+ games, with an ERA of 3.42.
| NAME | ERA | GS | G | W | L | W% | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | R. Johnson | 3.42 | 266 | 274 | 130 | 74 | .637 | 2,162 | 51 | 19 | 2 | 1838.1 | 1,414 | 698 | 782 | 160 | 884 | 89 | 3 | 10 | 7,721 | 66 | 10.58 | 4.33 | 2.45 | 0.78 | 28.0 | 11.4 | 1.25 | .283 | 3.83 | 79 | 3.33 | 78 | 6.92 | 204.2 |
| 2 |  | F. Hernandez | 3.42 | 418 | 419 | 169 | 136 | .554 | 2,524 | 25 | 11 | 0 | 2729.2 | 2,487 | 1,037 | 1,157 | 264 | 805 | 105 | 0 | 16 | 11,284 | 156 | 8.32 | 2.65 | 3.14 | 0.87 | 22.4 | 7.1 | 1.21 | .293 | 3.81 | 84 | 3.52 | 85 | 8.20 | 181.5 |
| 3 |  | H. Iwakuma | 3.42 | 136 | 150 | 63 | 39 | .618 | 714 | 1 | 1 | 2 | 883.2 | 825 | 336 | 352 | 115 | 185 | 15 | 6 | 13 | 3,574 | 23 | 7.27 | 1.88 | 3.86 | 1.17 | 20.0 | 5.2 | 1.14 | .279 | 3.59 | 89 | 3.86 | 97 | 8.40 | 8.5 |
| 4 |  | J. Paxton | 3.42 | 103 | 103 | 41 | 26 | .612 | 619 | 2 | 1 | 0 | 583.2 | 523 | 222 | 245 | 54 | 169 | 6 | 0 | 9 | 2,407 | 41 | 9.54 | 2.61 | 3.66 | 0.83 | 25.7 | 7.0 | 1.19 | .301 | 3.78 | 86 | 3.12 | 76 | 8.06 | 64.7 |
| 5 |  | L. Castillo | 3.46 | 106 | 106 | 39 | 31 | .557 | 633 | 0 | 0 | 0 | 618.1 | 541 | 238 | 256 | 82 | 166 | 21 | 0 | 2 | 2,532 | 6 | 9.21 | 2.42 | 3.81 | 1.19 | 25.0 | 6.6 | 1.14 | .282 | 3.73 | 90 | 3.76 | 94 | 7.87 | 15.9 |
| 6 |  | L. Gilbert | 3.58 | 146 | 146 | 46 | 36 | .561 | 884 | 2 | 1 | 0 | 835.1 | 703 | 332 | 352 | 111 | 181 | 25 | 0 | 6 | 3,377 | 41 | 9.52 | 1.95 | 4.88 | 1.20 | 26.2 | 5.4 | 1.06 | .272 | 3.79 | 92 | 3.51 | 88 | 7.57 | 44.3 |
| 7 | | G. Kirby | 3.58 | 112 | 112 | 44 | 34 | .564 | 621 | 1 | 0 | 0 | 637.2 | 616 | 254 | 270 | 72 | 93 | 25 | 0 | 1 | 2,601 | 13 | 8.76 | 1.31 | 6.68 | 1.02 | 23.9 | 3.6 | 1.11 | .304 | 3.81 | 93 | 3.25 | 82 | 8.69 | 52.6 |
| 8 | | E. Hanson | 3.69 | 143 | 145 | 56 | 54 | .509 | 740 | 21 | 3 | 0 | 967.1 | 949 | 397 | 432 | 73 | 285 | 22 | 0 | 17 | 4,048 | 43 | 6.88 | 2.65 | 2.60 | 0.68 | 18.3 | 7.0 | 1.28 | .299 | 4.02 | 91 | 3.24 | 80 | 8.83 | 87 |
| 9 | | F. Bannister | 3.75 | 117 | 118 | 40 | 50 | .444 | 564 | 24 | 7 | 0 | 768.1 | 738 | 320 | 362 | 95 | 250 | 12 | 0 | 10 | 3,254 | 21 | 6.61 | 2.93 | 2.26 | 1.11 | 17.3 | 7.7 | 1.29 | .276 | 4.24 | 91 | 3.87 | 90 | 8.64 | 36.1 |
| 10 | | F. Garcia | 3.89 | 169 | 170 | 76 | 50 | .603 | 819 | 9 | 4 | 0 | 1096.1 | 1,035 | 474 | 504 | 119 | 389 | 36 | 0 | 20 | 4,660 | 42 | 6.72 | 3.19 | 2.11 | 0.98 | 17.6 | 8.3 | 1.30 | .278 | 4.14 | 89 | 4.12 | 93 | 8.50 | 39.3 |
| 11 | | J. Moyer | 3.97 | 323 | 324 | 145 | 87 | .625 | 1,239 | 20 | 6 | 0 | 2093.0 | 2,100 | 924 | 995 | 261 | 524 | 79 | 1 | 29 | 8,802 | 25 | 5.33 | 2.25 | 2.36 | 1.12 | 14.1 | 6.0 | 1.25 | .275 | 4.28 | 89 | 4.37 | 98 | 9.03 | 24.8 |
| 12 | | M. Langston | 4.01 | 173 | 176 | 74 | 67 | .525 | 1,078 | 41 | 9 | 0 | 1197.2 | 1,068 | 533 | 596 | 133 | 575 | 26 | 1 | 10 | 5,126 | 34 | 8.10 | 4.32 | 1.87 | 1.00 | 21.0 | 11.2 | 1.37 | .282 | 4.48 | 94 | 3.92 | 91 | 8.03 | 51.1 |
| 13 | | M. Gonzales | 4.08 | 148 | 151 | 61 | 47 | .565 | 631 | 3 | 0 | 0 | 852.1 | 868 | 386 | 424 | 117 | 216 | 29 | 1 | 5 | 3,581 | 8 | 6.66 | 2.28 | 2.92 | 1.24 | 17.6 | 6.0 | 1.27 | .290 | 4.48 | 100 | 4.33 | 104 | 9.17 | -16 |
| 14 | | J. Vargas | 4.09 | 110 | 119 | 36 | 42 | .462 | 442 | 6 | 3 | 0 | 702.2 | 691 | 319 | 338 | 91 | 192 | 11 | 4 | 9 | 2,940 | 10 | 5.66 | 2.46 | 2.30 | 1.17 | 15.0 | 6.5 | 1.26 | .272 | 4.33 | 104 | 4.36 | 108 | 8.85 | -26.9 |
| 15 | | M. Young | 4.13 | 127 | 191 | 45 | 66 | .405 | 597 | 19 | 5 | 14 | 864.1 | 867 | 397 | 458 | 75 | 365 | 29 | 34 | 17 | 3,747 | 36 | 6.22 | 3.80 | 1.64 | 0.78 | 15.9 | 9.7 | 1.43 | .295 | 4.77 | 100 | 3.86 | 93 | 9.03 | 29.5 |
| 16 | | J. Beattie | 4.14 | 147 | 163 | 43 | 72 | .374 | 563 | 30 | 6 | 1 | 944.2 | 966 | 435 | 476 | 75 | 369 | 21 | 6 | 23 | 4,060 | 26 | 5.36 | 3.52 | 1.53 | 0.71 | 13.9 | 9.1 | 1.41 | .294 | 4.53 | 100 | 3.81 | 90 | 9.20 | 44.2 |
| 17 | | J. Washburn | 4.17 | 109 | 111 | 31 | 49 | .388 | 383 | 3 | 2 | 1 | 667.1 | 682 | 309 | 334 | 78 | 205 | 25 | 1 | 10 | 2,854 | 8 | 5.17 | 2.76 | 1.87 | 1.05 | 13.4 | 7.2 | 1.33 | .279 | 4.50 | 97 | 4.56 | 105 | 9.20 | -17.3 |
| 18 | | B. Swift | 4.33 | 112 | 282 | 41 | 49 | .456 | 369 | 7 | 1 | 24 | 903.2 | 1,010 | 435 | 498 | 58 | 304 | 40 | 62 | 26 | 3,929 | 28 | 3.68 | 3.03 | 1.21 | 0.58 | 9.4 | 7.7 | 1.45 | .301 | 4.96 | 102 | 3.98 | 95 | 10.06 | 21.5 |
| 19 | | R. Franklin | 4.34 | 106 | 181 | 35 | 50 | .412 | 427 | 6 | 3 | 0 | 811.1 | 838 | 391 | 419 | 124 | 238 | 36 | 26 | 14 | 3,460 | 6 | 4.74 | 2.64 | 1.79 | 1.38 | 12.3 | 6.9 | 1.33 | .271 | 4.65 | 101 | 4.97 | 114 | 9.30 | -57.1 |
| 20 | | M. Moore | 4.38 | 217 | 227 | 66 | 96 | .407 | 937 | 56 | 9 | 2 | 1457.0 | 1,498 | 709 | 783 | 146 | 535 | 29 | 6 | 31 | 6,243 | 42 | 5.79 | 3.30 | 1.75 | 0.90 | 15.0 | 8.6 | 1.40 | .294 | 4.84 | 103 | 3.93 | 91 | 9.25 | 60.6 |
| 21 | | J. Pineiro | 4.48 | 148 | 185 | 58 | 55 | .513 | 658 | 9 | 3 | 1 | 996.0 | 1,033 | 496 | 524 | 115 | 327 | 36 | 16 | 22 | 4,256 | 30 | 5.95 | 2.95 | 2.01 | 1.04 | 15.5 | 7.7 | 1.37 | .294 | 4.73 | 104 | 4.31 | 99 | 9.33 | 4.8 |
| 22 | | G. Abbott | 4.54 | 146 | 155 | 44 | 62 | .415 | 343 | 28 | 3 | 0 | 904.0 | 999 | 456 | 508 | 123 | 230 | 24 | 2 | 16 | 3,859 | 7 | 3.41 | 2.29 | 1.49 | 1.22 | 8.9 | 6.0 | 1.36 | .279 | 5.06 | 112 | 4.54 | 108 | 9.95 | -28.1 |
| 23 | | G. Meche | 4.65 | 143 | 147 | 55 | 44 | .556 | 575 | 4 | 2 | 0 | 815.1 | 810 | 421 | 453 | 109 | 363 | 21 | 2 | 6 | 3,537 | 22 | 6.35 | 4.01 | 1.58 | 1.20 | 16.3 | 10.3 | 1.44 | .284 | 5.00 | 106 | 4.81 | 108 | 8.94 | -34.3 |
More Mariners Stats
Team Batting Leaders 
HR
60
Raleigh
RBI
125
Raleigh
AVG
.300
Canzone
Team Pitching Leaders 
W
15
Woo
K
198
Woo
ERA
2.94
Woo
Team Rankings
HR
238
3rd
R
766
9th
SO
1,426
7th
ERA
3.87
13th
Astros
Rangers
Athletics
Angels
MLB 2025 Batting Leaders
MLB 2025 Pitching Leaders
MLB Fantasy 2025
MLB 2025 Betting
MLB 2025 Standings
| NL East | W | L | PCT | GB |
|---|---|---|---|---|
 Phillies - y | 96 | 66 | .593 | |
83 | 79 | .512 | 13.0 | |
79 | 83 | .488 | 17.0 | |
76 | 86 | .469 | 20.0 | |
66 | 96 | .407 | 30.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 97 | 65 | .599 | |
 Cubs - w | 92 | 70 | .568 | 5.0 |
 Reds - w | 83 | 79 | .512 | 14.0 |
78 | 84 | .481 | 19.0 | |
71 | 91 | .438 | 26.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 93 | 69 | .574 | |
 Padres - w | 90 | 72 | .556 | 3.0 |
81 | 81 | .500 | 12.0 | |
80 | 82 | .494 | 13.0 | |
43 | 119 | .265 | 50.0 |
Mets
Marlins
Braves
Nationals
Cardinals
Pirates
Giants
Diamondbacks
Rockies| AL East | W | L | PCT | GB |
|---|---|---|---|---|
 Blue Jays - y | 94 | 68 | .580 | |
 Yankees - w | 94 | 68 | .580 | |
 Red Sox - w | 89 | 73 | .549 | 5.0 |
77 | 85 | .475 | 17.0 | |
75 | 87 | .463 | 19.0 | |
| AL Central | W | L | PCT | GB |
 Guardians - y | 88 | 74 | .543 | |
 Tigers - w | 87 | 75 | .537 | 1.0 |
82 | 80 | .506 | 6.0 | |
70 | 92 | .432 | 18.0 | |
60 | 102 | .370 | 28.0 | |
| AL West | W | L | PCT | GB |
 Mariners - y | 90 | 72 | .556 | |
87 | 75 | .537 | 3.0 | |
81 | 81 | .500 | 9.0 | |
76 | 86 | .469 | 14.0 | |
72 | 90 | .444 | 18.0 |
Rays
Orioles
Royals
Twins
White Sox
