| Wednesday, June 15th, 1966 | Promoted CL Alec Ablett to Double A Eagle Pass. | Received MR George Sharpe from Double A Eagle Pass. | Drafted MR Ben Márquez in the 1966 first-year player draft (Round 6, Pick 17, 110th overall pick). | Drafted CF Mike Maslen in the 1966 first-year player draft (Round 7, Pick 17, 128th overall pick). | Drafted SP Kent McDaniel in the 1966 first-year player draft (Round 8, Pick 17, 146th overall pick). | Drafted SS John Turner in the 1966 first-year player draft (Round 9, Pick 17, 164th overall pick). | Drafted MR Albert Díaz in the 1966 first-year player draft (Round 10, Pick 17, 182nd overall pick). | Tuesday, May 3rd, 1966 | Activated C Ramón Rosa from the disabled list. | Monday, April 18th, 1966 | Placed C Ramón Rosa on the 15-day disabled list. | Wednesday, April 13th, 1966 | Placed CF Chad Ledoux on the 15-day disabled list. | Saturday, December 25th, 1965 | Activated CF Max Lake from the disabled list. | Wednesday, September 22nd, 1965 | Signed pitching coach Ben Moore. | Monday, September 6th, 1965 | Signed hitting coach Mark Massey. | |
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