 |
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| Monday, November 2nd , 1903 |
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| Activated C Diomedes Estopinán from the injured list. |
| Saturday, October 24th , 1903 |
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| Placed C Diomedes Estopinán on the 10-day injured list. |
| Monday, August 24th , 1903 |
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| Signed free agent SP Fernando Jaimes to a 1-year contract worth a total of P860. |
| Thursday, July 23rd , 1903 |
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| Traded 34-year old 1B Roger Muir to the Toa Baja Jinetes, getting 18-year old RHP Zacarías Pérez and 23-year old 2B Manuel Cabrera in return. |
| Monday, July 20th , 1903 |
|---|
| Traded 17-year old 2B Rosendo Romo and 22-year old C Isaías Peña to the Dorado Ejemplares, getting 32-year old LHP Ed Ostrom and 21-year old RHP Álvaro Rodríguez in return. |
| Monday, July 13th , 1903 |
|---|
| Traded 30-year old 2B Etelfrido Dorado to the Vieques Esqueletos, getting 30-year old LF Rogelio Hernández and 24-year old RF Juan Ocampo in return. |
| Wednesday, July 1st , 1903 |
|---|
| Signed free agent SP Édgar Valdez to a 1-year contract worth a total of P970. |
| Wednesday, April 29th , 1903 |
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| Signed free agent SP Kai Cockle to a 1-year contract worth a total of P990. |
| Monday, March 30th , 1903 |
|---|
| Signed free agent C Tomás Pérez to a 1-year contract worth a total of P860. |
| Signed free agent C Efraín Trejo to a 1-year contract worth a total of P630. |
| Signed free agent C Diomedes Estopinán to a 1-year contract worth a total of P690. |
| Monday, March 23rd , 1903 |
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| Signed free agent SS Alrigo García to a 1-year contract worth a total of P1,680. |
| Tuesday, February 17th , 1903 |
|---|
| Traded 22-year old 2B Arquímedes Gómez to the Anasco Matadioses, getting 30-year old 1B Urbano Rivera and 20-year old 1B Rubén Macías in return. |
