| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tom O'Halloran | 2012-2016 | 13 | 28 | .317 | 6.89 | 59 | 59 | 0 | 0 | 0 | 313.1 | 409 | 240 | 46 | 168 | 262 |
| Tim O'Herlihy | 2016-2016 | 0 | 1 | .000 | 6.23 | 4 | 0 | 0 | 0 | 1 | 4.1 | 2 | 3 | 1 | 1 | 4 |
| Brian O'Keggan | 2015-2016 | 3 | 4 | .429 | 2.95 | 60 | 0 | 0 | 0 | 4 | 79.1 | 64 | 26 | 7 | 18 | 72 |
| Jeff O'Macken | 2012-2012 | 5 | 7 | .417 | 4.27 | 20 | 20 | 0 | 0 | 0 | 122.1 | 135 | 58 | 15 | 54 | 89 |
| Clayton O'Neil | 2016-2016 | 1 | 1 | .500 | 3.18 | 20 | 0 | 0 | 0 | 11 | 17.0 | 15 | 6 | 1 | 11 | 20 |
| Jim O'Neil | 2012-2014 | 5 | 3 | .625 | 4.22 | 112 | 0 | 0 | 0 | 6 | 98.0 | 102 | 46 | 14 | 31 | 83 |
| Carl O'Quinn | 2016-2016 | 9 | 11 | .450 | 3.93 | 26 | 26 | 1 | 0 | 0 | 167.0 | 149 | 73 | 16 | 63 | 153 |
| Dave O'Rorke | 2012-2012 | 5 | 1 | .833 | 2.91 | 7 | 7 | 0 | 0 | 0 | 46.1 | 40 | 15 | 4 | 17 | 38 |
| Dan O'Sullivan | 2014-2016 | 7 | 3 | .700 | 5.55 | 163 | 0 | 0 | 0 | 4 | 198.0 | 187 | 122 | 26 | 160 | 255 |
| Emory O'Toole | 2013-2016 | 0 | 6 | .000 | 6.52 | 49 | 0 | 0 | 0 | 1 | 49.2 | 65 | 36 | 10 | 32 | 60 |
| Hideki Ohayashi | 2016-2016 | 1 | 0 | 1.000 | 0.00 | 4 | 0 | 0 | 0 | 0 | 3.1 | 2 | 0 | 0 | 2 | 5 |
| Tsumemasa Okada | 2014-2015 | 3 | 1 | .750 | 5.08 | 37 | 0 | 0 | 0 | 2 | 44.1 | 47 | 25 | 5 | 32 | 37 |
| Carlos Olivares | 2014-2016 | 8 | 5 | .615 | 3.89 | 72 | 16 | 0 | 0 | 0 | 145.2 | 163 | 63 | 11 | 64 | 70 |
| Wesley Oliver | 2012-2016 | 18 | 16 | .529 | 3.33 | 209 | 0 | 0 | 0 | 14 | 232.2 | 192 | 86 | 23 | 165 | 267 |
| Jeff Olsen | 2012-2014 | 26 | 18 | .591 | 4.07 | 57 | 57 | 0 | 0 | 0 | 345.0 | 330 | 156 | 31 | 161 | 271 |
| Marshall Olsen | 2015-2015 | 0 | 0 | .000 | 6.75 | 2 | 0 | 0 | 0 | 0 | 1.1 | 3 | 1 | 0 | 0 | 0 |
| Ramiro Ortega | 2012-2013 | 2 | 4 | .333 | 2.18 | 38 | 0 | 0 | 0 | 17 | 45.1 | 37 | 11 | 5 | 23 | 60 |
| Ernesto Ortíz | 2016-2016 | 1 | 2 | .333 | 6.85 | 4 | 4 | 0 | 0 | 0 | 23.2 | 36 | 18 | 4 | 14 | 15 |
| José Ortíz | 2014-2016 | 4 | 4 | .500 | 4.87 | 98 | 1 | 0 | 0 | 3 | 153.1 | 189 | 83 | 24 | 47 | 106 |
| Miguel Ortíz | 2012-2012 | 3 | 9 | .250 | 6.08 | 17 | 16 | 0 | 0 | 0 | 94.2 | 103 | 64 | 18 | 39 | 59 |
| Pedro Ortíz | 2014-2015 | 7 | 8 | .467 | 5.17 | 141 | 0 | 0 | 0 | 5 | 148.0 | 147 | 85 | 24 | 80 | 138 |
| Jake Osborne | 2012-2013 | 3 | 1 | .750 | 5.17 | 70 | 0 | 0 | 0 | 3 | 80.0 | 90 | 46 | 14 | 26 | 66 |
| Robert Osborne | 2015-2016 | 10 | 13 | .435 | 4.69 | 31 | 31 | 0 | 0 | 0 | 167.0 | 157 | 87 | 12 | 97 | 134 |
| Woody Owen | 2016-2016 | 11 | 4 | .733 | 3.14 | 16 | 16 | 0 | 0 | 0 | 94.2 | 73 | 33 | 9 | 29 | 101 |
| Jacob Owens | 2012-2012 | 0 | 2 | .000 | 7.54 | 23 | 0 | 0 | 0 | 0 | 22.2 | 33 | 19 | 4 | 20 | 17 |
| Keith Owens | 2012-2014 | 3 | 11 | .214 | 3.82 | 97 | 0 | 0 | 0 | 26 | 103.2 | 103 | 44 | 5 | 67 | 92 |
| Mike Owens | 2013-2016 | 4 | 5 | .444 | 5.52 | 167 | 0 | 0 | 0 | 0 | 202.0 | 235 | 124 | 21 | 121 | 125 |
| Ryan Owens | 2012-2016 | 45 | 27 | .625 | 4.16 | 88 | 88 | 4 | 1 | 0 | 577.0 | 577 | 267 | 58 | 200 | 460 |
| Tom Owens | 2013-2013 | 9 | 2 | .818 | 2.77 | 14 | 14 | 1 | 1 | 0 | 87.2 | 68 | 27 | 6 | 40 | 53 |
