| Tuesday, October 6th, 1959 | Activated MR Juan Morales from the disabled list. | Saturday, October 3rd, 1959 | Placed 1B Eldon Nolan on the 15-day disabled list. | Monday, September 21st, 1959 | Activated MR Carlos Rodríguez from the disabled list. | Thursday, September 10th, 1959 | Activated LF Gustavo Martínez from the disabled list. | Tuesday, September 8th, 1959 | Placed MR Juan Morales on the 15-day disabled list. | Sunday, September 6th, 1959 | Placed MR Carlos Rodríguez on the 15-day disabled list. | Thursday, August 13th, 1959 | Signed Artie Perkins to a minor league contract with a signing bonus of $5,800. | Thursday, August 6th, 1959 | Signed Pat O'Quinn to a minor league contract with a signing bonus of $16,500. | Thursday, July 23rd, 1959 | Signed 1st round draft pick Alberto Cortéz for a signing bonus of $77,300 and a 2-year major league contract worth a total of $154,600. | Sunday, June 21st, 1959 | Signed Carlos Torres to a minor league contract with a signing bonus of $5,400. | Wednesday, June 17th, 1959 | Signed Louis Wade to a minor league contract with a signing bonus of $27,700. | Tuesday, March 10th, 1959 | Activated SP Sterling Moore from the 60-day disabled list. | Friday, October 31st, 1958 | Signed team doctor Rubén Márquez to a 4-year, $14,600 per year contract. | Wednesday, October 22nd, 1958 | Signed scouting director Marcos Sánchez to a 5-year, $7,700 per year contract. | |
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