| Player | Team | Action | Details | |
|---|---|---|---|---|
| J.C. Mejia | Supreme Clientele | ADD | to MLB | 4:15 pm, 6/18/21 |
| Jahmai Jones | Supreme Clientele | ADD | to MLB | 4:15 pm, 6/18/21 |
| Bruce Zimmermann | Supreme Clientele | ADD | to MLB | 4:14 pm, 6/18/21 |
| Tony Kemp | Supreme Clientele | ADD | to MLB | 4:14 pm, 6/18/21 |
| Austin Hays | Undead Rabbits | ADD | to MLB | 4:08 pm, 6/18/21 |
| Masyn Winn | The Bluth Company | ADD | to AAA | 2:55 pm, 6/18/21 |
| Zach Thompson | The Bluth Company | ADD | to AAA | 10:17 am, 6/18/21 |
| Nick Sandlin | The Bluth Company | ADD | to AA | 8:26 pm, 6/17/21 |
| Kean Wong | Shaolin Schmeckles | ADD | to MLB | 7:55 pm, 6/17/21 |
| Abraham Toro | Cowboys From Hell | ADD | to MLB | 6:54 pm, 6/17/21 |
| Steven Duggar | Purple Cobras | ADD | to MLB | 1:11 pm, 6/17/21 |
| Seth Lugo | Chinballs | ADD | to MLB | 12:00 pm, 6/17/21 |
| Austin Voth | The Red Barons | ADD | to MLB | 8:57 am, 6/17/21 |
| Sherten Apostel | Jon Voight's Car | ADD | to AAA | 8:29 am, 6/17/21 |
| Hunter Green | Undead Rabbits | ADD | to AA | 9:41 pm, 6/16/21 |
| Luis Frias | Purple Cobras | ADD | to AA | 2:28 pm, 6/16/21 |
| Rodolfo Castro | The Bluth Company | ADD | to A | 2:08 pm, 6/16/21 |
| Luis Frias | The Bluth Company | ADD | to AAA | 10:57 am, 6/16/21 |
| Zach McKinstry | Purple Cobras | ADD | to AAA | 9:31 am, 6/16/21 |
| Curtis Terry | Geckos | ADD | to AAA | 8:35 pm, 6/15/21 |
| Joshua Mears | Geckos | ADD | to A | 8:19 pm, 6/15/21 |
| Niko Hulsizer | Shaolin Schmeckles | ADD | to AAA | 12:53 pm, 6/15/21 |
| Niko Goodrum | Shaolin Schmeckles | ADD | to MLB | 11:34 am, 6/15/21 |
| Scott Barlow | The Bluth Company | ADD | to MLB | 9:19 am, 6/15/21 |
| Wilmer Flores | Shaolin Schmeckles | ADD | to MLB | 3:38 pm, 6/14/21 |