| Player | Team | Action | Details | |
|---|---|---|---|---|
| Sam Long | Purple Cobras | ADD | to AAA | 11:29 pm, 6/9/21 |
| Ji-Man Choi | The Bluth Company | ADD | to MLB | 6:47 pm, 6/9/21 |
| Stefan Crichton | Shaolin Schmeckles | ADD | to MLB | 1:15 pm, 6/9/21 |
| Lamonte Wade | Supreme Clientele | ADD | to MLB | 9:10 am, 6/9/21 |
| Chad Kuhl | Supreme Clientele | ADD | to MLB | 9:10 am, 6/9/21 |
| Jordan Lyles | Supreme Clientele | ADD | to MLB | 9:10 am, 6/9/21 |
| Joey Lucchesi | Supreme Clientele | ADD | to MLB | 9:10 am, 6/9/21 |
| Harold Ramirez | The Bluth Company | ADD | to MLB | 11:30 pm, 6/8/21 |
| Wilmer Flores | Shaolin Schmeckles | ADD | to MLB | 6:17 pm, 6/8/21 |
| Lamonte Wade | The Bluth Company | ADD | to MLB | 8:01 am, 6/8/21 |
| Jake Marisnick | The Red Barons | ADD | to MLB | 7:47 am, 6/8/21 |
| Luis Garcia | The Red Barons | ADD | to AAA | 7:45 am, 6/8/21 |
| J.P. Crawford | Purple Cobras | ADD | to MLB | 5:43 am, 6/8/21 |
| Gavin Sheets | Undead Rabbits | ADD | to AA | 10:35 pm, 6/7/21 |
| Zach Pop | Undead Rabbits | ADD | to AAA | 6:38 pm, 6/7/21 |
| Hunter Renfroe | Undead Rabbits | ADD | to MLB | 10:25 am, 6/7/21 |
| Brad Boxberger | Undead Rabbits | ADD | to MLB | 10:18 am, 6/7/21 |
| Max Stassi | The Bluth Company | ADD | to MLB | 9:38 am, 6/7/21 |
| Tony Kemp | The Bluth Company | ADD | to MLB | 9:38 am, 6/7/21 |
| Jake Lamb | The Bluth Company | ADD | to MLB | 9:38 am, 6/7/21 |
| Jose Suarez | Cowboys From Hell | ADD | to MLB | 4:46 pm, 6/6/21 |
| Angel Zerpa | Cowboys From Hell | ADD | to AAA | 12:57 pm, 6/6/21 |
| D.J. Stewart | Bullet Club | ADD | to MLB | 12:02 pm, 6/6/21 |
| Jake Fraley | Bullet Club | ADD | to MLB | 11:41 am, 6/6/21 |
| Alex Dickerson | Shaolin Schmeckles | ADD | to MLB | 6:12 pm, 6/5/21 |