| Thursday, August 7th, 1958 | Placed C John Crosby on the 15-day disabled list. | Friday, July 18th, 1958 | Placed SP Marvin Hicks on the 15-day disabled list. | Friday, July 4th, 1958 | Placed CF Jimmy Webb on the 15-day disabled list. | Sunday, June 15th, 1958 | Released C Alfonso Moreno. | Promoted MR Lou Little to Double A Freeport. | Drafted 2B Steve Davis in the 1958 first-year player draft (Round 6, Pick 4, 90th overall pick). | Drafted C Tony Manuel in the 1958 first-year player draft (Round 7, Pick 4, 107th overall pick). | Drafted SP Júlio Alomar in the 1958 first-year player draft (Round 8, Pick 4, 123rd overall pick). | Drafted C Miguel Velásquez in the 1958 first-year player draft (Round 9, Pick 4, 139th overall pick). | Drafted MR Ed Crowe in the 1958 first-year player draft (Round 10, Pick 4, 155th overall pick). | Wednesday, May 7th, 1958 | Placed RF Scott Osborne on the 15-day disabled list. | Sunday, May 4th, 1958 | Placed C Stephen Dearman on the 15-day disabled list. | Monday, November 11th, 1957 | Activated MR Jerry Boniface from the disabled list. | Monday, November 4th, 1957 | Activated SP Marvin Hicks from the disabled list. | Saturday, September 21st, 1957 | Activated SP Jesús Castillo from the disabled list. | Friday, September 6th, 1957 | Activated 2B Larry Haas from the disabled list. | Saturday, August 31st, 1957 | Activated CF Jimmy Webb from the disabled list. | Thursday, August 29th, 1957 | Signed Manager Bryan Davis to a 3-year contract extension. | Signed Pitching Coach Dan Smith to a 1-year contract extension. | |
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