| | | Tuesday, October 7th, 1958 | | Activated MR Enrique Soto from the 60-day disabled list. | | Sunday, September 14th, 1958 | | Placed SP Rod Davis on the 60-day disabled list. | | Saturday, August 9th, 1958 | | Signed Raúl Rodríguez to a minor league contract with a signing bonus of $5,100. | | Friday, August 8th, 1958 | | Signed Johnny Shelton to a minor league contract with a signing bonus of $12,000. | | Thursday, August 7th, 1958 | | Signed Pedro López to a minor league contract with a signing bonus of $17,600. | | Signed Lorenzo Torres to a minor league contract with a signing bonus of $5,400. | | Placed 2B Jorge Alvarado on waivers. | | Sunday, June 29th, 1958 | | Activated CF José Flores from the disabled list. | | RF Bruno Paul was designated for assignment and placed on irrevocable waivers. | | Wednesday, May 28th, 1958 | | Activated CF Roberto Núñez from the disabled list. | | RF Carlos Alfmana was designated for assignment and placed on irrevocable waivers. | | Wednesday, January 1st, 1958 | | Recalled CL Jit wei Shang from Triple A Ajax. | | MR Brody Norman was designated for assignment and placed on waivers (from active). | | Saturday, November 23rd, 1957 | | Activated RF Leonard Oglethorpe from the 60-day disabled list. | | RF Salvador González was designated for assignment and placed on waivers (from active). | | Friday, November 15th, 1957 | | Signed bench coach Sean Mayer to a 4-year, $19,300 per year contract. | |
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