Stadium: Stadium Round: 26 Ground: Hardcourt outdoor
| ITF USA F10 | 2018/04/11 15:00 | Jack Findel-Hawkins v Vasil Kirkov | 5-7,6-7 |
| ITF USA F10 Qual | 2018/04/10 15:00 | Michael Shabaz v Vasil Kirkov | 5-7,7-6,6-3 |
| ITF USA F10 Qual | 2018/04/09 15:00 | Patrick Daciek v Vasil Kirkov | 7-5,2-6,1-6 |
| ITF USA F8 Qual | 2018/03/17 17:00 | Vasil Kirkov v Sem Verbeek | 4-6,3-6 |
| ITF USA F7 Qual | 2018/03/12 19:45 | Daniel Appelgren v Vasil Kirkov | 6-2,6-1 |
| ITF Kazakhstan F1 | 2018/02/12 07:35 | Vasil Kirkov v Sergey Fomin | 0-6,6-7 |
| ITF Kazakhstan F1 Qual | 2018/02/11 04:00 | Vasil Kirkov v Ivan Kalinin | 6-3,6-2 |
| ITF Turkey F5 | 2018/02/08 07:30 | Enrique Lopez-Perez v Vasil Kirkov | 6-2,6-3 |
| ITF USA F10 | 2018/04/11 15:00 | Collin Altamirano v Scott Griekspoor | 7-6,6-3 |
| ITF USA F9 | 2018/04/07 15:30 | Scott Griekspoor v Collin Altamirano | 7-6,6-2 |
| ITF USA F9 | 2018/04/05 15:00 | Collin Altamirano v Liam Caruana | 6-2,6-4 |
| ITF USA F8 | 2018/03/24 20:30 | JC Aragone v Collin Altamirano | 6-0,6-4 |
| ITF USA F8 | 2018/03/24 01:00 | Collin Altamirano v Laurent Lokoli | 6-2,6-1 |
| ITF USA F8 | 2018/03/23 20:15 | Martin Redlicki v Collin Altamirano | 6-7,7-6,6-7 |
| ITF USA F8 | 2018/03/21 00:05 | Andre Goransson v Collin Altamirano | 2-6,3-6 |
| ITF USA F7 | 2018/03/15 18:55 | Mathias Bourgue v Collin Altamirano | 6-4,6-3 |