| Player | Team | Action | Details | |
|---|---|---|---|---|
| Joey Wendle | Geckos | ADD | to MLB | 4:06 pm, 8/4/18 |
| Kendrys Morales | Kimble's Kids | ADD | to MLB | 11:43 am, 8/4/18 |
| Yusmeiro Petit | Kimble's Kids | ADD | to MLB | 11:01 am, 8/4/18 |
| Mark Reynolds | Kimble's Kids | ADD | to MLB | 11:00 am, 8/4/18 |
| Marco Estrada | Kimble's Kids | ADD | to MLB | 10:04 am, 8/4/18 |
| Addison Reed | Chinballs | ADD | to MLB | 6:18 pm, 8/3/18 |
| Chris Stratton | Chinballs | ADD | to MLB | 6:11 pm, 8/3/18 |
| Jason Martin | Ye Olde Tom Toolshed | ADD | to AAA | 1:20 pm, 8/3/18 |
| Chance Adams | Purple Cobras | ADD | to AA | 12:34 pm, 8/3/18 |
| Ramon Laureano | The Bluth Company | ADD | to AAA | 11:29 am, 8/3/18 |
| Austin Slater | Purple Cobras | ADD | to AAA | 10:46 am, 8/3/18 |
| Genesis Cabrera | The Bluth Company | ADD | to AAA | 10:06 pm, 8/2/18 |
| Mitch Garver | Cowboys From Hell | ADD | to MLB | 7:10 pm, 8/2/18 |
| Bobby Wahl | Shaolin Schmeckles | ADD | to MLB | 6:11 pm, 8/2/18 |
| Chris Stratton | Shaolin Schmeckles | ADD | to MLB | 4:15 pm, 8/2/18 |
| Alen Hanson | Ye Olde Tom Toolshed | ADD | to MLB | 1:43 pm, 8/2/18 |
| Michael A. Taylor | Shaolin Schmeckles | ADD | to MLB | 3:53 am, 8/2/18 |
| Keury Mella | Supreme Clientele | ADD | to AA | 2:39 pm, 8/1/18 |
| Ariel Jurado | Supreme Clientele | ADD | to AAA | 2:33 pm, 8/1/18 |
| Sam Gaviglio | The Red Barons | ADD | to MLB | 10:32 am, 8/1/18 |
| Tommy Milone | Purple Cobras | ADD | to MLB | 9:11 am, 8/1/18 |
| Brian Johnson | Purple Cobras | ADD | to MLB | 9:10 am, 8/1/18 |
| Trevor Rosenthal | The Red Barons | ADD | to NA | 7:03 pm, 7/31/18 |
| Will Harris | Geckos | ADD | to MLB | 1:52 pm, 7/31/18 |
| Alex Claudio | Shaolin Schmeckles | ADD | to MLB | 1:39 pm, 7/31/18 |