| NAME | GS | SEASON | TM | G | W | L | W% | ERA | 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 |  | F. Hernandez | 31 | 2015 |  SEA | 31 | 18 | 9 | .667 | 3.53 | 191 | 2 | 2 | 0 | 201.2 | 180 | 79 | 80 | 23 | 58 | 9 | 0 | 0 | 826 | 10 | 8.52 | 2.59 | 3.29 | 1.03 | 23.1 | 7.0 | 1.18 | .288 | 3.57 | 92 | 3.71 | 94 | 8.03 | 5.4 |
| 2 |  | T. Walker | 29 | 2015 | SEA | 29 | 11 | 8 | .579 | 4.56 | 157 | 1 | 0 | 0 | 169.2 | 163 | 86 | 92 | 25 | 40 | 9 | 0 | 1 | 706 | 4 | 8.33 | 2.12 | 3.93 | 1.33 | 22.2 | 5.7 | 1.20 | .291 | 4.88 | 119 | 4.06 | 103 | 8.65 | -2.1 |
| 3 | | R. Elias | 20 | 2015 | SEA | 22 | 5 | 8 | .385 | 4.14 | 97 | 0 | 0 | 0 | 115.1 | 106 | 53 | 57 | 15 | 44 | 9 | 0 | 1 | 490 | 1 | 7.57 | 3.43 | 2.20 | 1.17 | 19.8 | 9.0 | 1.30 | .280 | 4.45 | 108 | 4.51 | 114 | 8.27 | -7.4 |
| 4 |  | J.A. Happ | 20 | 2015 | SEA | 21 | 4 | 6 | .400 | 4.64 | 82 | 0 | 0 | 0 | 108.2 | 121 | 56 | 58 | 13 | 32 | 2 | 0 | 3 | 468 | 4 | 6.79 | 2.65 | 2.56 | 1.08 | 17.5 | 6.8 | 1.41 | .319 | 4.80 | 121 | 4.11 | 104 | 10.02 | -2 |
| 5 | | H. Iwakuma | 20 | 2015 | SEA | 20 | 9 | 5 | .643 | 3.54 | 111 | 1 | 1 | 0 | 129.2 | 117 | 51 | 53 | 18 | 21 | 1 | 0 | 1 | 516 | 1 | 7.70 | 1.46 | 5.29 | 1.25 | 21.5 | 4.1 | 1.06 | .271 | 3.68 | 92 | 3.73 | 94 | 8.12 | 3.2 |
| 6 | | M. Montgomery | 16 | 2015 | SEA | 16 | 4 | 6 | .400 | 4.60 | 64 | 2 | 2 | 0 | 90.0 | 92 | 46 | 49 | 11 | 37 | 4 | 0 | 1 | 395 | 10 | 6.40 | 3.70 | 1.73 | 1.10 | 16.2 | 9.4 | 1.43 | .290 | 4.90 | 120 | 4.66 | 118 | 9.20 | -7.3 |
| 7 |  | J. Paxton | 13 | 2015 | SEA | 13 | 3 | 4 | .429 | 3.90 | 56 | 0 | 0 | 0 | 67.0 | 67 | 29 | 34 | 8 | 29 | 0 | 0 | 1 | 297 | 5 | 7.52 | 3.90 | 1.93 | 1.07 | 18.9 | 9.8 | 1.43 | .289 | 4.57 | 101 | 4.31 | 109 | 9.00 | -2.7 |
| 8 | | V. Nuno | 10 | 2015 | SEA | 32 | 1 | 4 | .200 | 4.10 | 62 | 0 | 0 | 0 | 74.2 | 80 | 34 | 35 | 14 | 17 | 5 | 7 | 1 | 318 | 3 | 7.47 | 2.05 | 3.65 | 1.69 | 19.5 | 5.3 | 1.30 | .300 | 4.22 | 107 | 4.79 | 121 | 9.64 | -7.1 |
| 9 | | E. Olmos | 2 | 2015 | SEA | 6 | 1 | 0 | 1.000 | 4.50 | 4 | 0 | 0 | 0 | 14.0 | 16 | 7 | 8 | 1 | 8 | 1 | 1 | 1 | 67 | 1 | 2.57 | 5.14 | 0.50 | 0.64 | 6.0 | 11.9 | 1.71 | .283 | 5.14 | 117 | 5.41 | 137 | 10.29 | -2.3 |
| 10 | | T. Zych | 1 | 2015 | SEA | 13 | 0 | 0 | 2.45 | 24 | 0 | 0 | 0 | 18.1 | 17 | 5 | 6 | 1 | 3 | 2 | 4 | 0 | 76 | 1 | 11.78 | 1.47 | 8.00 | 0.49 | 31.6 | 3.9 | 1.09 | .348 | 2.95 | 64 | 2.04 | 51 | 8.35 | 4 |
Astros
Rangers
Athletics
Angels
CLE
NYY
Phillies
Mets
Brewers
Cubs
Dodgers
Padres
Blue Jays
Tigers
CIN
STL
ATL
WSH
BOS
TBR
KCR
SFG
AZ
CWS
