Stadium: Ringi 2 Round: 44 Ground: Hardcourt indoor
| Challenger Bastad Qual | 2018/07/08 08:15 | Wu, Di v Solberg, Christoffer | 6-2,6-1 |
| Challenger Bastad Qual | 2018/07/07 08:15 | Ozan Cildir v Solberg, Christoffer | 1-6,2-6 |
| ITF Tunisia F25 | 2018/06/25 08:30 | Pol Martin Tiffon v Solberg, Christoffer | 6-0,6-4 |
| ITF Tunisia F25 | 2018/06/24 10:00 | Tadija Radovanovic v Solberg, Christoffer | 1-6,3-6 |
| ITF Sweden F3 | 2018/05/23 09:50 | Solberg, Christoffer v Louis Wessels | 2-6,4-6 |
| ITF Sweden F3 | 2018/05/21 08:00 | Solberg, Christoffer v Terczynski, Mateusz | 6-4,7-5 |
| ITF Sweden F3 Qual | 2018/05/20 10:30 | Solberg, Christoffer v Mayer, Patrick | 6-3,6-4 |
| ITF Sweden F3 Qual | 2018/05/19 10:05 | Solberg, Christoffer v Swahn, Ossian | 6-1,6-3 |
| ITF Portugal F11 Qual | 2018/07/03 08:30 | Ivan Marrero Curbelo v Grinvalds, Roberts | 6-3,6-4 |
| ITF Portugal F11 Qual | 2018/07/02 08:30 | Cortez, Afonso v Grinvalds, Roberts | 1-6,1-6 |
| ITF Portugal F11 Qual | 2018/06/30 08:30 | Sizya Ernest Kivanda v Grinvalds, Roberts | 2-6,6-7 |
| ITF Portugal F9 | 2018/06/18 09:00 | Cacao, Tiago v Grinvalds, Roberts | 6-1,6-3 |
| ITF Portugal F9 | 2018/06/17 11:30 | Ferreira, Goncalo v Grinvalds, Roberts | 6-3,1-6,2-6 |
| ITF Portugal F9 | 2018/06/16 09:00 | Ferreira, Joao (Por) v Grinvalds, Roberts | 1-6,6-7 |
| Coupe Davis | 2018/04/07 08:00 | Grinvalds, Roberts v Zund, Serafin | 6-0,6-0 |
| Coupe Davis | 2018/04/04 07:00 | Grinvalds, Roberts v Stergiou, Ioannis | 0-6,4-6 |