| | | Sunday, July 22nd, 1979 | | Placed CF Pedro Baca on the 15-day disabled list. |
| Friday, June 15th, 1979 | | Received SS Denny Patton from Double A Kingsville. | | Drafted 3B Angelo Bashford in the 1979 first-year player draft (Round 6, Pick 11, 116th overall pick). | | Drafted SP José Sánchez in the 1979 first-year player draft (Round 7, Pick 11, 136th overall pick). | | Drafted SS Roy Curtis in the 1979 first-year player draft (Round 8, Pick 11, 156th overall pick). | | Drafted SP Zach Bradley in the 1979 first-year player draft (Round 9, Pick 11, 176th overall pick). | | Drafted MR Miguel Vázquez in the 1979 first-year player draft (Round 10, Pick 11, 196th overall pick). |
| Monday, June 11th, 1979 | | Placed MR Kyle Lowry on the 15-day disabled list. |
| Thursday, May 31st, 1979 | | Placed SP Jesús Pinto on the 15-day disabled list. |
| Sunday, April 8th, 1979 | | Placed MR Kyle Lowry on the 15-day disabled list. |
| Wednesday, August 30th, 1978 | | Activated 2B Ronald McKinney from the disabled list. |
| Saturday, August 26th, 1978 | | 3B Emílio Rivera retires. | | Signed Manager Paco Rivas to a 1-year contract extension. | | Signed Pitching Coach Bradley Ivy to a 2-year contract extension. |
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