| | | Wednesday, August 22nd, 1979 | | Activated CF Ludwig Nestroy from the disabled list. |
| Saturday, August 18th, 1979 | | Activated RF Lyle Logan from the disabled list. |
| Thursday, August 9th, 1979 | | Placed SP Nick Wooten on the 15-day disabled list. |
| Monday, August 6th, 1979 | | Placed SP Matt Forrest on the 15-day disabled list. |
| Saturday, July 21st, 1979 | | Placed CF Ludwig Nestroy on the 15-day disabled list. |
| Wednesday, July 11th, 1979 | | Placed CF Lawrence Carroll on the 15-day disabled list. |
| Saturday, July 7th, 1979 | | Placed RF Lyle Logan on the 15-day disabled list. |
| Friday, June 15th, 1979 | | Promoted SP Ramón Espín to Double A Eagle Pass. | | Promoted RF Lyle Logan to Double A Eagle Pass. | | Received SP Júlio Martínez from Double A Eagle Pass. | | Drafted MR Ryan Sturtevant in the 1979 first-year player draft (Round 6, Pick 16, 121st overall pick). | | Drafted 1B Torvald Stam in the 1979 first-year player draft (Round 7, Pick 16, 141st overall pick). | | Drafted SP Javier Peña in the 1979 first-year player draft (Round 8, Pick 16, 161st overall pick). | | Drafted MR Ken Brooks in the 1979 first-year player draft (Round 9, Pick 16, 181st overall pick). | | Drafted SP Richard Reeves in the 1979 first-year player draft (Round 10, Pick 16, 201st overall pick). | | Promoted MR Masakado Sawada to Double A Eagle Pass. | | Received MR Morris Pate from Double A Eagle Pass. |
| Thursday, June 14th, 1979 | | Placed 3B José Rivera on the 15-day disabled list. |
| Saturday, December 9th, 1978 | | Activated SP Francisco Cantú from the disabled list. |
| Monday, August 28th, 1978 | | Activated CF Matt Forrest from the disabled list. |
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