 |
|
|
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
|---|---|---|---|---|---|---|---|---|---|
| Charles O'Brien | 2019-2019 | .000 | 0 | 0 | 4 | 5 | 0 | 4.41 | 74 |
| Aaron O'Day | 2021-2022 | .000 | 0 | 0 | 16 | 19 | 0 | 4.09 | 216 |
| Andy O'Gowan | 2024-2024 | .273 | 0 | 1 | 0 | 0 | 0 | 0.00 | 0 |
| Bryan O'Halloran | 2022-2024 | .000 | 0 | 0 | 3 | 10 | 6 | 5.36 | 103 |
| Dustin O'Neal | 2012-2013 | .247 | 5 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Clayton O'Neil | 2020-2020 | .000 | 0 | 0 | 0 | 0 | 6 | 0.00 | 7 |
| Sam O'Reilly | 2023-2024 | .265 | 8 | 31 | 0 | 0 | 0 | 0.00 | 0 |
| Steven O'Toole | 2022-2022 | .235 | 2 | 24 | 0 | 0 | 0 | 0.00 | 0 |
| Brett Oberholtzer | 2012-2012 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 1 |
| Miguel Obeso | 2022-2023 | .000 | 0 | 0 | 4 | 11 | 1 | 5.75 | 86 |
| Ted Obregon | 2012-2012 | .667 | 1 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Jesús Ochoa | 2021-2023 | .267 | 2 | 10 | 0 | 0 | 0 | 0.00 | 0 |
| Leonardo Ochoa | 2012-2012 | .284 | 16 | 52 | 0 | 0 | 0 | 0.00 | 0 |
| Ron Odom | 2019-2023 | .251 | 31 | 161 | 0 | 0 | 0 | 0.00 | 0 |
| Tadanobu Ogawa | 2013-2013 | .333 | 3 | 8 | 0 | 0 | 0 | 0.00 | 0 |
| Mike Ogden | 2017-2018 | .251 | 26 | 71 | 0 | 0 | 0 | 0.00 | 0 |
| Michael Ohlman | 2012-2013 | .275 | 12 | 49 | 0 | 0 | 0 | 0.00 | 0 |
| Jefferson Olacio | 2018-2018 | .000 | 0 | 0 | 3 | 0 | 0 | 1.48 | 39 |
| George Olsen | 2020-2022 | .000 | 0 | 0 | 14 | 14 | 0 | 4.22 | 189 |
| Casey Opitz | 2022-2023 | .182 | 3 | 22 | 0 | 0 | 0 | 0.00 | 0 |
| José Ortega | 2020-2024 | .000 | 0 | 0 | 12 | 16 | 0 | 4.59 | 180 |
| Juan Ortega | 2021-2022 | .269 | 12 | 62 | 0 | 0 | 0 | 0.00 | 0 |
| Joseph Ortiz | 2012-2014 | .000 | 0 | 0 | 4 | 3 | 3 | 3.74 | 81 |
| Domingo Ortíz | 2024-2024 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Esteban Ortíz | 2019-2019 | .500 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| José Ortíz | 2022-2022 | .000 | 0 | 0 | 2 | 2 | 0 | 4.19 | 23 |
| Sergio Ortíz | 2020-2021 | .000 | 0 | 0 | 5 | 3 | 2 | 6.99 | 80 |
| Evan Osborne | 2020-2023 | .273 | 40 | 205 | 0 | 0 | 0 | 0.00 | 0 |
| Andy Otero | 2015-2015 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| César Otero | 2024-2024 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Teo Ottenhof | 2012-2012 | .000 | 0 | 0 | 0 | 4 | 0 | 8.26 | 34 |
| Hunter Owen | 2024-2024 | .000 | 0 | 0 | 0 | 1 | 0 | 2.08 | 3 |
| Richard Owens | 2014-2015 | .000 | 0 | 0 | 10 | 9 | 57 | 3.41 | 106 |
