| Saturday, October 4th, 1958 | Activated 2B Jim Clothier from the disabled list. | Wednesday, October 1st, 1958 | Placed CF Carlos Pérez on the 15-day disabled list. | Thursday, September 4th, 1958 | Activated CF Carlos Pérez from the disabled list. | Thursday, August 7th, 1958 | Signed Stan West to a minor league contract with a signing bonus of $17,900. | Tuesday, August 5th, 1958 | Signed António Coranillo to a minor league contract with a signing bonus of $5,100. | Thursday, July 17th, 1958 | Activated MR Júlio Castillo from the 60-day disabled list. | MR Raúl Díaz was designated for assignment and placed on waivers (from active). | Wednesday, June 18th, 1958 | Signed Joe Penn to a minor league contract with a signing bonus of $2,500. | Thursday, May 15th, 1958 | Activated CF Carlos Pérez from the disabled list. | RF Jorge Molina was designated for assignment and placed on irrevocable waivers. | Friday, May 2nd, 1958 | Placed 2B Brad Spencer on the 15-day disabled list. | Sunday, April 27th, 1958 | Activated 3B Jim Clothier from the disabled list. | SS Remington Sabean was designated for assignment and placed on irrevocable waivers. | Sunday, April 13th, 1958 | Placed LF Lorenzo Valdés on the 60-day disabled list. | Thursday, April 3rd, 1958 | Placed CF Carlos Pérez on the 15-day disabled list. | Thursday, January 9th, 1958 | Signed free agent MR Eugene Gould to a 1-year contract worth a total of $11,730. | Friday, November 1st, 1957 | Recalled MR Scott Gordon from Triple A Pickering. | MR Jay Ward was designated for assignment and placed on waivers (from active). | Monday, October 21st, 1957 | Activated CF Vincent George from the 60-day disabled list. | RF Jesús Amaya was designated for assignment and placed on waivers (from active). | |
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