| Player | Team | Action | Details | |
|---|---|---|---|---|
| Jalen Beeks | The Red Barons | ADD | to MLB | 9:36 am, 9/2/21 |
| Yu Chang | Cowboys From Hell | ADD | to MLB | 8:50 am, 9/2/21 |
| Josh Harrison | Purple Cobras | ADD | to MLB | 8:16 am, 9/2/21 |
| Gavin Sheets | The Bluth Company | ADD | to AAA | 11:46 pm, 9/1/21 |
| Jake Junis | Bullet Club | ADD | to MLB | 2:29 pm, 9/1/21 |
| Pedro Severino | The Red Barons | ADD | to MLB | 12:05 pm, 9/1/21 |
| Andrew Chafin | The Red Barons | ADD | to MLB | 12:05 pm, 9/1/21 |
| Pete Fairbanks | Ye Olde Tom Toolshed | ADD | to MLB | 12:52 pm, 8/31/21 |
| Jose Marmolejos | The Red Barons | ADD | to MLB | 12:06 pm, 8/31/21 |
| Yoshitomo Tsutsugo | The Red Barons | ADD | to MLB | 12:06 pm, 8/31/21 |
| Jarlin Garcia | The Red Barons | ADD | to MLB | 12:05 pm, 8/31/21 |
| Chris Stratton | The Red Barons | ADD | to MLB | 12:05 pm, 8/31/21 |
| Jeremy Pena | The Bluth Company | ADD | to NA | 11:34 am, 8/31/21 |
| Dustin Harris | The Bluth Company | ADD | to AA | 11:32 am, 8/31/21 |
| Jorge Alfaro | The Red Barons | ADD | to MLB | 6:51 am, 8/31/21 |
| Gio Urshela | The Red Barons | ADD | to MLB | 6:51 am, 8/31/21 |
| D.J. Peters | Bullet Club | ADD | to MLB | 7:52 pm, 8/30/21 |
| Jorbit Vivas | Purple Cobras | ADD | to A | 10:28 am, 8/30/21 |
| Edmundo Sosa | Bullet Club | ADD | to MLB | 10:20 am, 8/30/21 |
| Austin Hays | Purple Cobras | ADD | to MLB | 9:07 am, 8/30/21 |
| Jorge Mateo | The Red Barons | ADD | to MLB | 10:11 pm, 8/29/21 |
| Yasel Antuna | The Red Barons | ADD | to MLB | 10:10 pm, 8/29/21 |
| Bradley Zimmer | Purple Cobras | ADD | to MLB | 9:15 am, 8/29/21 |
| Eli Morgan | Purple Cobras | ADD | to AAA | 12:59 am, 8/29/21 |
| Taylor Hearn | Bullet Club | ADD | to MLB | 12:07 am, 8/29/21 |