| Wednesday, August 19th, 1964 | Activated CF Jesús Canales from the disabled list. | Wednesday, June 24th, 1964 | Placed RF Denny Hood on the 15-day disabled list. | Friday, June 19th, 1964 | Released 1B Barry May. | Monday, June 15th, 1964 | Promoted MR Matt Pew to Double A Tulsa. | Promoted 1B Josh Morrison to Double A Tulsa. | Received MR Jesús Hernández from Double A Tulsa. | Received RF Eduardo Gómez from Double A Tulsa. | Promoted MR Jesús Hernández to Double A Tulsa. | Promoted CF Eduardo Gómez to Double A Tulsa. | Received SP Robert Garneau from Double A Tulsa. | Received 1B Brian Wright from Double A Tulsa. | Drafted SP Juan Rodríguez in the 1964 first-year player draft (Round 6, Pick 3, 100th overall pick). | Drafted 2B Denny Hood in the 1964 first-year player draft (Round 7, Pick 3, 118th overall pick). | Drafted MR Jim St. John in the 1964 first-year player draft (Round 8, Pick 3, 136th overall pick). | Drafted 1B Adrián López in the 1964 first-year player draft (Round 9, Pick 3, 154th overall pick). | Drafted MR Juan Montaño in the 1964 first-year player draft (Round 10, Pick 3, 172nd overall pick). | Promoted MR Jesús Barrios to Double A Tulsa. | Promoted RF Fred Gauvin to Double A Tulsa. | Received MR Jesús Hernández from Double A Tulsa. | Received CF Eduardo Gómez from Double A Tulsa. | |
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