 | Omir Santos Rios is a professional baseball catcher with the Pittsburgh Pirates organization... more » |
 | Orlando de Jesús McFarlane Quesada was a Major League Baseball player for the Pittsburgh... more » |
 | Orlando Mercado Rodríguez is a Puerto Rican former professional baseball player. He played all... more » |
| Oscar Sylvester "Cotton" Siemer was a Major League Baseball player. He played two seasons with... more » |
 | Oscar Harland Stanage was a Major League Baseball catcher. Born in Tulare, California, Stanage... more » |
 | Ossee Freeman Schreckengost was a Major League Baseball catcher and first baseman. Schreckengost... more » |
| Otis Benjamin Thornton was a catcher in Major League Baseball. He played for the Houston Astros. more » |
| Otto George Denning was a Major League Baseball catcher who played for two seasons. He played... more » |
| Otto Albert Jacobs was a catcher in Major League Baseball. He played for the Chicago White Sox... more » |
 | Lowell Otto Miller [Moonie] was a catcher in Major League Baseball who played from 1910 through... more » |
| Owen Dennis Ignatius Shannon was a professional baseball catcher. He played parts of two seasons... more » |
