Stadion: Centre Court Round: 25 Ground: Hardcourt indoor
| Challenger - Glasgow - Qualifikation | 2018/04/29 15:00 | Harri Heliovaara v Adrien Bossel | 2-6,7-6,6-4 |
| Challenger - Glasgow - Qualifikation | 2018/04/28 14:20 | Harri Heliovaara v Scott Duncan | 6-1,6-4 |
| Davis Cup | 2018/04/08 10:30 | Harri Heliovaara v Ricardas Berankis | 2-6,3-6 |
| Davis Cup | 2018/04/07 13:00 | Harri Heliovaara v Laurynas Grigelis | 6-3,1-6,6-3 |
| ITF - Israel F3 | 2018/03/24 07:00 | Yannick Vandenbulcke v Harri Heliovaara | 6-2,6-2 |
| ITF - Israel F3 | 2018/03/23 07:00 | Patrik Niklas-Salminen v Harri Heliovaara | 3-6,0-6 |
| ITF - Israel F3 | 2018/03/22 08:00 | Nikolay Kolobaev v Harri Heliovaara | 3-6,4-6 |
| ITF - Israel F3 | 2018/03/21 09:40 | Emmanuel Luria v Harri Heliovaara | 0-6,0-6 |
| ITF - Frankreich F8 | 2018/04/25 09:00 | Jonathan Gray v Gregoire Jacq | 0-6,2-6 |
| ITF - Frankreich F8 | 2018/04/23 16:30 | Robin Kern v Jonathan Gray | 3-6,2-6 |
| ITF - Griechenland F5 | 2018/03/30 07:30 | Jonathan Gray v Yaraslav Shyla | 4-6,2-6 |
| ITF - Griechenland F5 | 2018/03/29 10:35 | Jonathan Gray v Patrik Rikl | 6-4,6-0 |
| ITF - Griechenland F5 | 2018/03/27 13:25 | Jonathan Gray v Anastasios Pavlis | 7-6,6-1 |
| ITF - Griechenland F4 | 2018/03/23 14:55 | Jonathan Gray v Tomas Barrios Vera | 6-3,1-6,1-6 |
| ITF - Griechenland F4 | 2018/03/23 10:45 | Jonathan Gray v Erik Crepaldi | 6-3,5-7,6-2 |
| ITF - Griechenland F4 | 2018/03/21 11:10 | Jonathan Gray v Maksim Tikhomirov | 7-6,6-2 |