| Player | Team | Action | Details | |
|---|---|---|---|---|
| John Gant | Chinballs | ADD | to MLB | 12:38 am, 5/6/18 |
| Bryan Mitchell | Bridge Four | ADD | to MLB | 4:26 pm, 5/5/18 |
| Tayron Guerrero | Chinballs | ADD | to MLB | 11:43 am, 5/5/18 |
| Taylor Clarke | The Bluth Company | ADD | to AA | 9:59 pm, 5/4/18 |
| Wilmer Flores | Chinballs | ADD | to MLB | 5:03 pm, 5/4/18 |
| Jose Soriano | Chinballs | ADD | to AAA | 5:02 pm, 5/4/18 |
| Zach Eflin | Supreme Clientele | ADD | to MLB | 11:25 am, 5/4/18 |
| Wade LeBlanc | Supreme Clientele | ADD | to MLB | 11:23 am, 5/4/18 |
| Austin Barnes | Supreme Clientele | ADD | to MLB | 11:23 am, 5/4/18 |
| Jordan Zimmermann | The Bluth Company | ADD | to MLB | 10:58 am, 5/4/18 |
| Tyler Flowers | The Bluth Company | ADD | to MLB | 10:58 am, 5/4/18 |
| Matt Adams | Purple Cobras | ADD | to MLB | 7:14 am, 5/4/18 |
| Denard Span | Kimble's Kids | ADD | to MLB | 6:06 am, 5/4/18 |
| Kris Medlen | Hill Valley Preservation Society | ADD | to MLB | 9:18 pm, 5/3/18 |
| Jalen Beeks | The Bluth Company | ADD | to AA | 6:28 pm, 5/3/18 |
| Chad Pinder | Chinballs | ADD | to MLB | 1:49 pm, 5/3/18 |
| Trent Deveaux | The Red Barons | ADD | to A | 11:46 am, 5/3/18 |
| Adam Wainwright | The Red Barons | ADD | to MLB | 11:44 am, 5/3/18 |
| Mike Soroka | Scranton Yankees | ADD | to MLB | 10:55 am, 5/3/18 |
| Mitch Moreland | Scranton Yankees | ADD | to MLB | 11:08 pm, 5/2/18 |
| Chris Tillman | Hill Valley Preservation Society | ADD | to MLB | 10:43 pm, 5/2/18 |
| Juan Nicasio | The Bluth Company | ADD | to MLB | 9:38 pm, 5/2/18 |
| Daniel Descalso | Bridge Four | ADD | to MLB | 6:06 pm, 5/2/18 |
| Gavin Lux | Jon Voight's Car | ADD | to AA | 5:57 pm, 5/2/18 |
| Hector Velazquez | Bridge Four | ADD | to MLB | 3:09 pm, 5/2/18 |