| Tuesday, October 28th, 1980 |
| Promoted C Monty Thomas to Triple A St. Catherines. |
| Promoted SS Carlos Rodríguez to Triple A St. Catherines. |
| Promoted 1B Adrian Coleman to Triple A St. Catherines. |
| Received MR José Romo from Triple A St. Catherines. |
| Received MR Dan Montgomery from Triple A St. Catherines. |
| Received MR Jason Smith from Triple A St. Catherines. |
| Received CL John Negus from Triple A St. Catherines. |
| Received MR Kris Heller from Triple A St. Catherines. |
| Received MR Joe Stanley from Triple A St. Catherines. |
| Received C Pete Harrison from Single A Santa Ana. |
| Received 1B Tyler Ross from Single A Santa Ana. |
| Received SS Manuel Zúñiga from Single A Santa Ana. |
| Received LF Jeff McQuartie from Single A Santa Ana. |
| Received RF Luis Moreno from Single A Santa Ana. |
| Received SS Hyeong-ro Park from Single A Santa Ana. |
| Received RF José Silva from Single A Santa Ana. |
| Received CF José Cruz from Single A Santa Ana. |
| Demoted SP Reynaldo Rivero to Single A Santa Ana. |
| Demoted SP Spencer Phillips to Single A Santa Ana. |
| Demoted SP Brian Holmes to Single A Santa Ana. |
| Demoted MR Pancho Piña to Single A Santa Ana. |
| Demoted MR Shi-fu Phan to Single A Santa Ana. |
| Demoted MR Jim Stevens to Single A Santa Ana. |
