| Wednesday, June 15th, 1966 | Promoted SP Alfredo Romano to Double A Kingsville. | Received SP A.R. Page from Double A Kingsville. | Promoted RF Will MacPherson to Double A Kingsville. | Received C César Villarreal from Double A Kingsville. | Drafted 2B Joe MacAllan in the 1966 first-year player draft (Round 6, Pick 3, 96th overall pick). | Drafted SP James Montgomery in the 1966 first-year player draft (Round 7, Pick 3, 114th overall pick). | Drafted RF Alfred Clements in the 1966 first-year player draft (Round 8, Pick 3, 132nd overall pick). | Drafted MR Rubén Martínez in the 1966 first-year player draft (Round 9, Pick 3, 150th overall pick). | Drafted MR Michael Gaines in the 1966 first-year player draft (Round 10, Pick 3, 168th overall pick). | Promoted 1B Stanford Urquart to Double A Kingsville. | Received LF Pedro Coronado from Double A Kingsville. | |
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