| Player | Team | Action | Details | |
|---|---|---|---|---|
| Blaine Hardy | Hill Valley Preservation Society | ADD | to MLB | 10:31 am, 5/29/18 |
| Mike Montgomery | The Red Barons | ADD | to MLB | 5:29 am, 5/29/18 |
| Max Muncy | The Bluth Company | ADD | to MLB | 9:17 pm, 5/28/18 |
| Mike Montgomery | The Bluth Company | ADD | to MLB | 7:25 pm, 5/28/18 |
| Jose Pirela | The Red Barons | ADD | to MLB | 9:45 am, 5/28/18 |
| Andrew Knizer | Purple Cobras | ADD | to AAA | 9:24 am, 5/28/18 |
| Drew Waters | The Bluth Company | ADD | to AA | 9:16 am, 5/28/18 |
| Caleb Ferguson | Purple Cobras | ADD | to AAA | 9:12 am, 5/28/18 |
| Jonathan Hernandez | Purple Cobras | ADD | to A | 9:11 am, 5/28/18 |
| Edgar Santana | The Bluth Company | ADD | to AA | 7:01 pm, 5/27/18 |
| Matt Albers | Geckos | ADD | to MLB | 12:29 pm, 5/27/18 |
| Jason Hammel | Kimble's Kids | ADD | to MLB | 12:22 pm, 5/27/18 |
| Chaz Roe | Geckos | ADD | to MLB | 10:50 am, 5/27/18 |
| Jeff Samardzija | Hill Valley Preservation Society | ADD | to MLB | 7:32 am, 5/27/18 |
| Frankie Montas | Supreme Clientele | ADD | to AAA | 4:46 pm, 5/26/18 |
| Ian Kennedy | Kimble's Kids | ADD | to MLB | 4:37 pm, 5/26/18 |
| Andrew Moore | Supreme Clientele | ADD | to AA | 6:51 pm, 5/25/18 |
| Sergio Romo | The Bluth Company | ADD | to MLB | 6:17 pm, 5/25/18 |
| Alvarado Jose | The Bluth Company | ADD | to AAA | 6:03 pm, 5/25/18 |
| Alex Canario | The Bluth Company | ADD | to A | 3:51 pm, 5/25/18 |
| Nick Tropeano | Supreme Clientele | ADD | to MLB | 12:28 pm, 5/24/18 |
| Clarke Schmidt | The Bluth Company | ADD | to AAA | 12:02 pm, 5/24/18 |
| Oscar Mercado | The Bluth Company | ADD | to AAA | 12:01 pm, 5/24/18 |
| Seung-hwan Oh | Purple Cobras | ADD | to MLB | 5:45 am, 5/24/18 |
| Guillermo Heredia | Purple Cobras | ADD | to MLB | 5:45 am, 5/24/18 |