| Player | Team | Action | Details | |
|---|---|---|---|---|
| Blaine Hardy | Hill Valley Preservation Society | ADD | to MLB | 10:31 am, 5/29/18 |
| Blaine Hardy | Hill Valley Preservation Society | DROP | to FA | 5:12 pm, 6/20/18 |
| Blaine Hardy | Purple Cobras | ADD | to MLB | 6:19 am, 6/23/18 |
| Blaine Hardy | Purple Cobras | DROP | to FA | 2:52 pm, 6/23/18 |
| Blaine Hardy | The Red Barons | ADD | to MLB | 7:38 pm, 8/7/18 |
| Blaine Hardy | The Red Barons | DROP | to FA | 4:17 pm, 8/16/18 |