| Wednesday, July 29th, 1959 | Placed 1B Bob Jenkins on the 15-day disabled list. | Monday, June 15th, 1959 | Released 3B Mauro Santos. | Promoted SP Henry Hinton to Double A Kingsville. | Received SP Luis Méndez from Double A Kingsville. | Drafted RF Francisco Seánez in the 1959 first-year player draft (Round 6, Pick 8, 95th overall pick). | Drafted MR Juan Vargas in the 1959 first-year player draft (Round 7, Pick 8, 111st overall pick). | Drafted C Kevin Sullivan in the 1959 first-year player draft (Round 8, Pick 8, 127th overall pick). | Drafted MR Carlos Delaney in the 1959 first-year player draft (Round 9, Pick 8, 143rd overall pick). | Drafted SP Marcus Graves in the 1959 first-year player draft (Round 10, Pick 8, 159th overall pick). | Wednesday, June 10th, 1959 | Released 3B Pat Hutton. | Monday, April 27th, 1959 | Activated SP Jesús Ramos from the disabled list. | Saturday, April 25th, 1959 | Released 2B Eric Owens. | Monday, April 20th, 1959 | Placed CF Ramón Pérez on the 15-day disabled list. | Tuesday, October 21st, 1958 | Activated SP Ángel Montoya from the disabled list. | Friday, September 12th, 1958 | Activated CF Luis Ochoa from the disabled list. | Monday, September 8th, 1958 | Activated 3B Miguel Garza from the disabled list. | |
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