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|
| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| O'Brien, Floyd | 1B | Derry Spuds | 29 | 06/23/1884 | Windsor | CAN | Right | Right | 179 cm | 94 kg | - |
| O'Connor, Adam | 1B | Rutland Quarrymen | 24 | 11/13/1889 | Grantham | ENG | Left | Left | 182 cm | 88 kg | - |
| Obando, Néstor | RP | Barre Headstones | 31 | 09/10/1882 | Ponce | PUR | Left | Left | 189 cm | 90 kg | - |
| Ocampo, José | SP | Waterville Elms | 31 | 11/23/1882 | Río Grande | PUR | Right | Right | 176 cm | 88 kg | - |
| Ochoa, Aimar | C | Templeton Red Onions | 29 | 06/19/1884 | San Juan | PUR | Right | Right | 175 cm | 90 kg | - |
| Ochoa, Álvaro | LF | Derry Spuds | 32 | 09/10/1881 | San Juan | PUR | Right | Right | 178 cm | 95 kg | - |
| Oliva, Arturo | 3B | Burlington Lightermen | 24 | 05/17/1889 | San Carlos | VEN | Right | Right | 177 cm | 76 kg | - |
| Oliva, Gustavo | C | Falmouth Submersibles | 28 | 06/27/1885 | San Juan | PUR | Right | Right | 176 cm | 92 kg | - |
| Olivares, Eufemio | CF | Mystic Drawbridges | 26 | 09/19/1887 | Añasco | PUR | Right | Right | 175 cm | 79 kg | - |
| Olivares, Tadeo | RF | Newburyport Deep Ones | 26 | 06/05/1887 | Havana | CUB | Left | Left | 178 cm | 86 kg | - |
| Olivarez, Ubaldo | 1B | Griswold Vampires | 26 | 12/30/1887 | Ponce | PUR | Left | Left | 178 cm | 92 kg | - |
| Olivera, Ernesto | C | Templeton Red Onions | 27 | 10/20/1886 | Utuado | PUR | Right | Right | 179 cm | 89 kg | - |
| Olquín, Everardo | SP | Newburyport Deep Ones | 30 | 01/14/1883 | Caguas | PUR | Right | Right | 179 cm | 89 kg | - |
| Orea, Enrique | C | Mystic Drawbridges | 33 | 03/05/1880 | San Juan | PUR | Right | Right | 175 cm | 92 kg | P720 |
| Orengo, Pascual | 1B | Concord Stagecoaches | 30 | 07/01/1883 | San Juan | PUR | Right | Right | 178 cm | 95 kg | - |
| Orr, Peter | LF | Griswold Vampires | 32 | 08/28/1881 | Cumbernauld | SCO | Left | Left | 183 cm | 93 kg | - |
| Ortega, Guiomar | RP | Waterville Elms | 25 | 05/01/1888 | Guadalajara | MEX | Right | Right | 178 cm | 80 kg | - |
| Ortiz, Darío | LF | Woonsocket Foxes | 24 | 09/19/1889 | Cidra | PUR | Right | Right | 171 cm | 79 kg | - |
| Ortiz, Melquíades | RP | Newport Pilot Whales | 30 | 08/04/1883 | Florida | PUR | Left | Right | 179 cm | 81 kg | - |
| Ortiz, Pablo | RF | Winchendon Rocking Horses | 27 | 11/01/1886 | Mayagüez | PUR | Left | Left | 177 cm | 89 kg | - |
| Oviedo, Fernando | LF | Waterville Elms | 19 | 02/10/1894 | Havana | CUB | Right | Right | 176 cm | 68 kg | - |
| Owens, Tubrady | LF | Nashua Gatekeepers | 31 | 03/09/1882 | Lisnaskea | IRL | Left | Left | 178 cm | 90 kg | - |
| Oyler, Andy | 3B | Providence Gems | 33 | 05/05/1880 | Unknown | USA | Right | Right | 183 cm | 66 kg | P500 |
