| Player | Team | Action | Details | |
|---|---|---|---|---|
| Christian Villanueva | Purple Cobras | ADD | to MLB | 7:35 am, 6/21/18 |
| Nathaniel Lowe | The Bluth Company | ADD | to AA | 9:46 pm, 6/20/18 |
| Austin Bibens-Dirkx | Bridge Four | ADD | to MLB | 9:44 pm, 6/20/18 |
| Justin Anderson | Hill Valley Preservation Society | ADD | to MLB | 5:12 pm, 6/20/18 |
| Alen Hanson | Chinballs | ADD | to MLB | 2:12 pm, 6/20/18 |
| Pedro Strop | Shaolin Schmeckles | ADD | to MLB | 1:59 pm, 6/20/18 |
| Welington Castillo | The Red Barons | ADD | to NA | 9:22 am, 6/20/18 |
| John Lamb | Purple Cobras | ADD | to MLB | 7:51 am, 6/20/18 |
| Sam Dyson | Geckos | ADD | to MLB | 8:07 pm, 6/19/18 |
| Kevin McCarthy | Geckos | ADD | to MLB | 8:06 pm, 6/19/18 |
| Tim Hill | Geckos | ADD | to MLB | 8:05 pm, 6/19/18 |
| Bradley Zimmer | The Red Barons | ADD | to AAA | 6:32 pm, 6/19/18 |
| Jefry Rodriguez | Purple Cobras | ADD | to MLB | 4:07 am, 6/19/18 |
| Brandon Maurer | Shaolin Schmeckles | ADD | to MLB | 8:18 pm, 6/18/18 |
| Ryan McKenna | The Bluth Company | ADD | to AAA | 3:15 pm, 6/18/18 |
| Sergio Romo | Purple Cobras | ADD | to MLB | 9:08 am, 6/18/18 |
| Bruce Rondon | Nixon's Nasty Ninjas | ADD | to MLB | 5:49 pm, 6/17/18 |
| Pablo Sandoval | Nixon's Nasty Ninjas | ADD | to MLB | 5:48 pm, 6/17/18 |
| Jonathan Hernandez | The Bluth Company | ADD | to AA | 1:27 pm, 6/17/18 |
| Hector Neris | Purple Cobras | ADD | to MLB | 9:16 am, 6/17/18 |
| Yan Gomes | Purple Cobras | ADD | to MLB | 9:14 am, 6/17/18 |
| Jose Miguel Fernandez | The Red Barons | ADD | to MLB | 8:37 am, 6/17/18 |
| Luis Rengifo | Nixon's Nasty Ninjas | ADD | to AAA | 8:36 am, 6/17/18 |
| Jose Pirela | The Red Barons | ADD | to MLB | 10:20 pm, 6/16/18 |
| Edwin Rios | Ye Olde Tom Toolshed | ADD | to AAA | 4:44 pm, 6/15/18 |