Round: 26 Ground: Clay
| ITF Latvia F1 | 2018/07/31 10:00 | Soyfer, Daniel v Grinvalds, Roberts | 6-3,3-6,4-6 |
| ITF Latvia F1 | 2018/07/29 07:00 | Grinvalds, Roberts v Vaise, Tomas | 4-6,6-3,6-4 |
| ITF Latvia F1 | 2018/07/28 07:00 | Grinvalds, Roberts v Abou Khamis, Mohammad Khaled | 6-0,6-0 |
| ITF Lithuania F1 | 2018/07/25 11:55 | Vrzesinski, Robertas v Grinvalds, Roberts | 6-2,2-6,6-1 |
| ITF Lithuania F1 | 2018/07/24 13:25 | Grinvalds, Roberts v Joao Lucas Reis da Silva | 4-6,6-4,7-6 |
| ITF Lithuania F1 | 2018/07/22 08:00 | Hermans, Mats v Grinvalds, Roberts | 3-6,3-6 |
| ITF Lithuania F1 | 2018/07/21 13:00 | Russo, Cristiano v Grinvalds, Roberts | 0-6,1-6 |
| ITF Lithuania F1 | 2018/07/21 07:00 | Lukstins, Gustavs v Grinvalds, Roberts | 5-7,0-6 |
| ITF Latvia F1 | 2018/07/31 12:00 | Ivan Liutarevich v Elbaz, Shahar | 4-6,6-3,6-1 |
| ITF Lithuania F1 | 2018/07/23 07:00 | Ivan Liutarevich v Fernando Yamacita | 6-4,2-6,5-7 |
| ITF Uzbekistan F4 Qual | 2018/06/03 06:00 | Ivan Liutarevich v Baybekov, Danis | 6-3,6-7,4-6 |
| ITF Uzbekistan F3 | 2018/05/29 11:00 | Ivan Liutarevich v Khaldeev, Mihail | 5-7,3-6 |
| ITF Uzbekistan F3 Qual | 2018/05/28 06:20 | Ivan Liutarevich v Bakhodur, Fariduni | 6-3,6-0 |
| ITF Uzbekistan F3 Qual | 2018/05/27 09:00 | Ivan Liutarevich v Anvarkhodjaev, Islom | 6-1,6-0 |
| ITF Ukraine F2 | 2018/05/13 09:30 | Ivan Liutarevich v Kohl, Cristopher | 6-3,3-6,4-6 |
| ITF Ukraine F1 | 2018/05/08 11:05 | Jordan Correia Passos Do Carmo v Ivan Liutarevich | 6-3,6-4 |