| Player | Team | Action | Details | |
|---|---|---|---|---|
| Dylan Cozens | The Red Barons | ADD | to MLB | 7:12 pm, 6/1/18 |
| Kyle Crick | The Red Barons | ADD | to AAA | 5:40 am, 6/1/18 |
| Edgar Santana | The Red Barons | ADD | to AAA | 5:33 am, 6/1/18 |
| Juan Nicasio | The Red Barons | ADD | to MLB | 3:53 pm, 5/31/18 |
| Pablo Lopez | Purple Cobras | ADD | to AA | 2:16 pm, 5/31/18 |
| Tyler Austin | Bridge Four | ADD | to MLB | 1:44 pm, 5/31/18 |
| Yolmer Sanchez | Bridge Four | ADD | to MLB | 1:43 pm, 5/31/18 |
| Mike Fiers | Bridge Four | ADD | to MLB | 1:42 pm, 5/31/18 |
| Miguel Rojas | Cowboys From Hell | ADD | to MLB | 9:44 am, 5/31/18 |
| Jared Hughes | Cowboys From Hell | ADD | to MLB | 9:44 am, 5/31/18 |
| Kolten Wong | Chinballs | ADD | to MLB | 3:50 pm, 5/30/18 |
| Wei-Yin Chen | Nixon's Nasty Ninjas | ADD | to MLB | 12:32 pm, 5/30/18 |
| Adam Conley | Nixon's Nasty Ninjas | ADD | to MLB | 12:32 pm, 5/30/18 |
| David Hess | Bridge Four | ADD | to MLB | 10:14 am, 5/30/18 |
| Devon Travis | Cowboys From Hell | ADD | to MLB | 10:08 am, 5/30/18 |
| Bubba Thompson | Scranton Yankees | ADD | to AAA | 9:28 am, 5/30/18 |
| Daniel Palka | Purple Cobras | ADD | to MLB | 8:35 am, 5/30/18 |
| Trevor Stephan | The Bluth Company | ADD | to AAA | 9:13 pm, 5/29/18 |
| Hector Rondon | Hill Valley Preservation Society | ADD | to MLB | 2:16 pm, 5/29/18 |
| Ke'Bryan Hayes | Hill Valley Preservation Society | ADD | to AA | 2:07 pm, 5/29/18 |
| Yairo Munoz | The Bluth Company | ADD | to AAA | 1:07 pm, 5/29/18 |
| Jonathan Loaisiga | The Bluth Company | ADD | to AA | 12:47 pm, 5/29/18 |
| Manny Pina | Kimble's Kids | ADD | to MLB | 12:42 pm, 5/29/18 |
| Brian McCann | Kimble's Kids | ADD | to MLB | 12:42 pm, 5/29/18 |
| Taylor Widener | Chinballs | ADD | to A | 12:24 pm, 5/29/18 |