 | O'Brien, Eddie
Former MLB Player |
|
| O'Brien, John
Former MLB Player | |
| O'Brien, Pete
Former MLB Player | |
 | O'Brien, Peter
MLB Player | |
 | O'Connor, Jack
Former MLB Player | |
 | O'Dell, Billy
Former MLB Player | |
 | O'Donoghue, John
Former MLB Player | |
 | O'Leary, Troy
Former MLB Player | |
 | O'Neill, Paul
Former MLB Player | |
 | Obando, Sherman
Former MLB Player | |
 | Oberkfell, Ken
Former MLB Player | |
 | Odom, Blue Moon
Former MLB Player | |
 | Oelkers, Bryan
Former MLB Player | |
 | Oester, Ron
Former MLB Player | |
 | Office, Rowland
Former MLB Player | |
 | Ogea, Chad
Former MLB Player | |
 | Oglivie, Ben
Former MLB Player | |
 | Ojeda, Augie
Former MLB Player | |
 | Oldis, Bob
Former MLB Player | |
 | Olivares, Omar
Former MLB Player | |
 | Oliver, Al
Former MLB Player | |
 | Oliver, Joe
Former MLB Player | |
 | Olson, Garrett
Former MLB Player | |
 | Olson, Greg
Former MLB Player | |
 | Olson, Gregg
Former MLB Player | |
 | Olwine, Ed
Former MLB Player | |
| Omogrosso, Brian
Former MLB Player | |
 | Ontiveros, Steve
Former MLB Player | |
| 
