| 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 |  | U. Jimenez | 32 | 2015 |  BAL | 32 | 12 | 10 | .545 | 4.11 | 168 | 0 | 0 | 0 | 184.0 | 182 | 84 | 89 | 20 | 68 | 11 | 0 | 1 | 791 | 6 | 8.22 | 3.33 | 2.47 | 0.98 | 21.2 | 8.6 | 1.36 | .309 | 4.35 | 102 | 4.00 | 96 | 8.90 | 3.3 |
| 2 | | W. Chen | 31 | 2015 | BAL | 31 | 11 | 8 | .579 | 3.34 | 153 | 0 | 0 | 0 | 191.1 | 192 | 71 | 78 | 28 | 41 | 5 | 0 | 0 | 792 | 3 | 7.20 | 1.93 | 3.73 | 1.32 | 19.3 | 5.2 | 1.22 | .290 | 3.67 | 83 | 4.15 | 100 | 9.03 | 0.3 |
| 3 | | C. Tillman | 31 | 2015 | BAL | 31 | 11 | 11 | .500 | 4.99 | 120 | 0 | 0 | 0 | 173.0 | 176 | 96 | 97 | 20 | 64 | 5 | 0 | 1 | 741 | 4 | 6.24 | 3.33 | 1.88 | 1.04 | 16.2 | 8.6 | 1.39 | .293 | 5.05 | 123 | 4.44 | 107 | 9.16 | -5.1 |
| 4 | | M. Gonzalez | 26 | 2015 | BAL | 26 | 9 | 12 | .429 | 4.91 | 109 | 0 | 0 | 0 | 144.2 | 151 | 79 | 81 | 24 | 51 | 8 | 0 | 2 | 622 | 4 | 6.78 | 3.17 | 2.14 | 1.49 | 17.5 | 8.2 | 1.40 | .295 | 5.04 | 121 | 5.00 | 120 | 9.39 | -13 |
| 5 |  | K. Gausman | 17 | 2015 | BAL | 25 | 4 | 7 | .364 | 4.25 | 103 | 0 | 0 | 0 | 112.1 | 109 | 53 | 56 | 17 | 29 | 2 | 1 | 1 | 470 | 7 | 8.25 | 2.32 | 3.55 | 1.36 | 21.9 | 6.2 | 1.23 | .288 | 4.49 | 105 | 4.09 | 98 | 8.73 | 0.9 |
| 6 | | B. Norris | 11 | 2015 | BAL | 18 | 2 | 9 | .182 | 7.06 | 50 | 0 | 0 | 0 | 66.1 | 84 | 52 | 57 | 14 | 25 | 3 | 2 | 0 | 305 | 0 | 6.78 | 3.39 | 2.00 | 1.90 | 16.4 | 8.2 | 1.64 | .329 | 7.73 | 174 | 5.63 | 135 | 11.40 | -10.5 |
| 7 | | M. Wright | 9 | 2015 | BAL | 12 | 3 | 5 | .375 | 6.04 | 26 | 0 | 0 | 0 | 44.2 | 52 | 30 | 30 | 9 | 18 | 5 | 0 | 3 | 204 | 2 | 5.24 | 3.63 | 1.44 | 1.81 | 12.7 | 8.8 | 1.57 | .295 | 6.04 | 149 | 6.13 | 147 | 10.48 | -9.4 |
| 8 | | T. Wilson | 5 | 2015 | BAL | 9 | 2 | 2 | .500 | 3.50 | 13 | 0 | 0 | 0 | 36.0 | 39 | 14 | 14 | 1 | 11 | 1 | 2 | 1 | 149 | 0 | 3.25 | 2.75 | 1.18 | 0.25 | 8.7 | 7.4 | 1.39 | .309 | 3.50 | 87 | 3.77 | 91 | 9.75 | 1.6 |
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