Round: 1
| ITF Estonia F2 | 2018/10/27 08:00 | Nikola Slavic v Gustavs Lukstins | 6-0,6-3 |
| ITF Latvia F1 | 2018/07/28 07:00 | Esteban Bruna v Gustavs Lukstins | 6-4,6-1 |
| ITF Lithuania F1 | 2018/07/21 07:00 | Gustavs Lukstins v Roberts Grinvalds | 5-7,0-6 |
| ITF Estonia F1 | 2018/07/14 08:00 | Gustavs Lukstins v Rudolfs Mednis | 6-7,2-6 |
| ITF Belgium F3 Qual | 2018/07/01 12:00 | Gustavs Lukstins v Sam Taylor | 6-7,2-6 |
| ITF Turkey F6 | 2018/02/10 09:00 | Gustavs Lukstins v Ryuki Matsuda | 0-6,1-6 |
| ITF Turkey F3 | 2018/01/22 10:00 | Muhammet Haylaz v Gustavs Lukstins | 6-1,7-5 |
| ITF Turkey F3 | 2018/01/20 07:00 | Gustavs Lukstins v Amir Hossein Badi | 6-3,2-6,6-2 |
| Challenger Tiburon Qual | 2017/09/23 23:05 | Mikelis Libietis v Filip Peliwo | 3-6,2-6 |
| Challenger Cary Qual | 2017/09/10 14:00 | Julian Zlobinsky v Mikelis Libietis | 6-4,7-6 |
| ITF Latvia F1 | 2017/08/01 09:35 | Mikelis Libietis v Fabian Gruber | 6-0,6-0 |
| ITF Poland F2 | 2017/06/21 09:00 | Robin Stanek v Mikelis Libietis | 6-4,6-3 |
| ITF Poland F2 | 2017/06/19 12:30 | Nick Chappell v Mikelis Libietis | 6-4,3-6,4-6 |
| ITF Poland F2 | 2017/06/19 09:00 | Mikelis Libietis v Juan Ignacio Ameal | 4-6,3-6 |
| ITF Poland F2 | 2017/06/18 08:30 | Mikelis Libietis v Patrik Brydolf | 6-4,7-6 |
| Challenger Savannah | 2017/05/02 18:25 | Mikelis Libietis v Stefan Kozlov | 3-6,4-6 |