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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| O'Brien, Kerwin | C | Free Agent | 25 | 07/22/1989 | Calgary | CAN | Right | Right | 5' 11" | 184 lbs | - |
| O'Dwyer, Mackenzie | 1B | Kelowna Heat | 22 | 05/26/1992 | Kitimat | CAN | Right | Left | 6' 1" | 200 lbs | - |
| O'Neill, Paul | MR | Niagara Stars | 32 | 05/11/1982 | Kangerdlinerk | CAN | Right | Right | 6' 1" | 185 lbs | - |
| O'Neill, Richard | MR | Free Agent | 24 | 07/20/1990 | Port Hardy | CAN | Left | Left | 6' 2" | 195 lbs | - |
| Oger, Daniel | CF | Free Agent | 32 | 03/19/1982 | Chapais | CAN | Right | Right | 5' 11" | 213 lbs | - |
| Oger, Joël | 3B | Free Agent | 24 | 05/21/1990 | Toronto | CAN | Right | Right | 6' 2" | 165 lbs | - |
| Olivier, Mickael | RF | London Monarchs | 19 | 04/30/1995 | Saskatoon | CAN | Right | Right | 6' 1" | 170 lbs | - |
| Ormon, Leif | SP | Free Agent | 21 | 01/24/1993 | Laval | CAN | Switch | Right | 6' 0" | 185 lbs | - |
| Orr, Jonathan | SS | Victoria Capitals | 29 | 09/06/1985 | Ottawa | CAN | Right | Right | 6' 3" | 205 lbs | - |
| Osmond, Aydan | RF | Free Agent | 24 | 01/12/1990 | Abbotsford | CAN | Left | Left | 6' 3" | 227 lbs | - |
| Oulton, Ethan | 1B | Free Agent | 36 | 02/04/1978 | Toronto | CAN | Right | Right | 6' 4" | 239 lbs | - |
| Oulton, Steve | RF | Free Agent | 31 | 11/12/1983 | Montreal | CAN | Switch | Right | 6' 0" | 207 lbs | - |

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