| 12/31/2016 | ||||||
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| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Charles O'Connor | 2012-2016 | 19 | 17 | .528 | 2.70 | 316 | 0 | 0 | 0 | 48 | 343.1 | 273 | 103 | 17 | 150 | 309 |
| Brian O'Keggan | 2012-2016 | 20 | 21 | .488 | 4.55 | 221 | 25 | 1 | 1 | 4 | 385.1 | 446 | 195 | 63 | 88 | 255 |
| Jeff O'Macken | 2012-2012 | 0 | 2 | .000 | 11.93 | 5 | 3 | 0 | 0 | 0 | 14.1 | 31 | 19 | 5 | 10 | 10 |
| Clayton O'Neil | 2016-2016 | 0 | 1 | .000 | 6.08 | 15 | 0 | 0 | 0 | 1 | 13.1 | 12 | 9 | 3 | 5 | 15 |
| Dave O'Rorke | 2012-2012 | 4 | 4 | .500 | 5.31 | 17 | 14 | 0 | 0 | 0 | 79.2 | 97 | 47 | 10 | 41 | 42 |
| Francisco Ochoa | 2014-2014 | 0 | 2 | .000 | 14.46 | 3 | 3 | 0 | 0 | 0 | 9.1 | 21 | 15 | 3 | 8 | 6 |
| Tsumemasa Okada | 2012-2014 | 12 | 4 | .750 | 4.73 | 142 | 1 | 0 | 0 | 4 | 173.0 | 184 | 91 | 15 | 77 | 121 |
| Wesley Oliver | 2012-2012 | 2 | 3 | .400 | 5.62 | 51 | 0 | 0 | 0 | 1 | 73.2 | 88 | 46 | 12 | 42 | 52 |
| Jeff Olsen | 2014-2016 | 31 | 32 | .492 | 5.10 | 82 | 76 | 2 | 0 | 1 | 443.0 | 474 | 251 | 57 | 148 | 235 |
| Marshall Olsen | 2012-2014 | 9 | 12 | .429 | 4.42 | 159 | 1 | 0 | 0 | 24 | 181.1 | 171 | 89 | 20 | 77 | 209 |
| Ramiro Ortega | 2012-2016 | 16 | 10 | .615 | 4.76 | 281 | 9 | 0 | 0 | 10 | 361.1 | 399 | 191 | 37 | 151 | 309 |
| Robert Osborne | 2016-2016 | 10 | 11 | .476 | 5.02 | 34 | 27 | 0 | 0 | 0 | 150.2 | 165 | 84 | 16 | 62 | 119 |
| Ryan Owens | 2012-2016 | 10 | 20 | .333 | 6.19 | 50 | 31 | 1 | 0 | 1 | 213.2 | 261 | 147 | 27 | 115 | 133 |
| Tom Owens | 2012-2016 | 51 | 41 | .554 | 3.54 | 198 | 123 | 3 | 0 | 7 | 834.1 | 796 | 328 | 36 | 318 | 648 |
| Tom Owens | 2013-2016 | 24 | 37 | .393 | 4.51 | 90 | 90 | 3 | 0 | 0 | 532.2 | 585 | 267 | 68 | 260 | 311 |
