| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
|---|
| O'Brien, Kyle | RP | Free Agent | 24 | 11/11/1994 | Cherokee | USA | Left | Left | 6' 1" | 215 lbs | - | | O'Brien, Peter | RF | Fairview MuckDogs | 29 | 07/15/1990 | Miami Gardens | USA | Right | Right | 6' 3" | 240 lbs | $507,500 | | O'Day, Darren | RP | Austin Bats | 36 | 10/22/1982 | Jacksonville | USA | Right | Right | 6' 3" | 220 lbs | $1,342,250 | | O'Flaherty, Eric | RP | Free Agent | 34 | 02/05/1985 | Walla Walla | USA | Left | Left | 6' 2" | 210 lbs | - | | O'Keeffe, Jake | SP | Free Agent | 22 | 12/13/1996 | Denver | USA | Right | Right | 6' 4" | 215 lbs | - | | Ocampo, Alex | SP | Nashua Pride | 17 | 11/29/2001 | Barahona | DOM | Right | Right | 5' 10" | 160 lbs | - | | Odor, Rougned | 2B | Connecticut Choppers | 25 | 02/03/1994 | Maracaibo | VEN | Left | Right | 5' 10" | 210 lbs | $2,761,250 | | Odorizzi, Jake | RP | Indianapolis Indians | 29 | 03/27/1990 | Breese | USA | Right | Right | 6' 2" | 205 lbs | $913,500 | | Okey, Chris | C | Indianapolis Indians | 24 | 12/29/1994 | Mt. Dora | USA | Right | Right | 5' 10" | 210 lbs | $507,500 | | Olivera, Hector | LF | Florida Gators | 34 | 04/05/1985 | Santiago de Cuba | CUB | Right | Right | 6' 2" | 225 lbs | $507,500 | | Orense, Nicanor | LF | Austin Bats | 17 | 03/01/2002 | Maracaibo | VEN | Left | Left | 6' 4" | 200 lbs | - | | Organ, Keith | SP | Free Agent | 21 | 07/27/1998 | Nashville | USA | Right | Right | 6' 2" | 190 lbs | - | | Orlando, Paulo | RF | Nashua Pride | 33 | 11/01/1985 | São Paulo | BRA | Right | Right | 6' 2" | 220 lbs | $507,500 | | Orosco, Jordan | SP | Richmond Bullet Club | 17 | 06/16/2002 | Santiago | DOM | Right | Right | 6' 0" | 170 lbs | - | | Orozco, Jorge | SP | Eugene Emeralds | 18 | 01/29/2001 | Salcedo | DOM | Right | Right | 6' 2" | 180 lbs | - | | Ortega, Rich | SP | Avon Lake Schooners | 19 | 11/27/1999 | Santo Domingo | DOM | Right | Right | 6' 3" | 185 lbs | - | | Ortegon, Danny | SP | Erie Seawolves | 17 | 07/08/2002 | Santo Domingo | DOM | Left | Right | 6' 5" | 200 lbs | - | | Ortelli, Bertrando | SP | Regina Reapers | 17 | 02/01/2002 | Barinitas | VEN | Left | Right | 6' 5" | 195 lbs | - | | Ortiz, Angel | SP | Erie Seawolves | 17 | 02/16/2002 | Santo Domingo | DOM | Right | Right | 6' 0" | 165 lbs | - | | Ortiz, Jonathan | CF | Erie Seawolves | 19 | 10/01/2000 | Bonao | DOM | Left | Left | 6' 0" | 175 lbs | - | | Ortiz, Ryan | C | Richmond Bullet Club | 32 | 09/29/1987 | Rancho Santa Fe | USA | Right | Right | 6' 3" | 220 lbs | $850,000 | | Ortiz, Willie | LF | Erie Seawolves | 19 | 01/28/2000 | Carora | VEN | Right | Right | 6' 2" | 190 lbs | - | | Osich, Josh | RP | Eugene Emeralds | 31 | 09/03/1988 | Boise | USA | Left | Left | 6' 2" | 230 lbs | $507,500 | | Osuna, Roberto | RP | Regina Reapers | 24 | 02/07/1995 | Juan José Ríos | MEX | Right | Right | 6' 2" | 225 lbs | $2,730,000 | | Ozuna, Marcell | RF | Manitoba Moose | 28 | 11/12/1990 | Santo Domingo | DOM | Right | Right | 6' 0" | 225 lbs | $9,000,000 |
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