| ITF Netherlands F2 | 07/05 08:00 | 26 | Harri Heliovaara v Stephan Gerritsen | 6-2,7-5 | |
| ITF Netherlands F2 | 07/04 08:00 | 25 | Harri Heliovaara v Kevin Kaczynski | 6-3,6-1 | |
| Challenger Blois | 06/21 09:00 | 26 | [319] Pedro Cachin v Harri Heliovaara [372] | 6-7,7-6,6-2 | |
| Challenger Blois | 06/19 16:00 | 25 | [359] Frederico Ferreira Silva v Harri Heliovaara [372] | 6-3,5-7,6-7 | |
| Challenger Blois Qual | 06/18 10:15 | 54 | [372] Harri Heliovaara v Tristan Lamasine [487] | 4-6,4-6 | |
| Challenger Blois Qual | 06/17 13:55 | 46 | [371] Harri Heliovaara v Romain Arneodo [88] | 4-6,7-6,7-6 | |
| Challenger Blois Qual | 06/16 15:45 | 45 | [371] Harri Heliovaara v Hans Hach Verdugo [194] | 6-1,6-4 | |
| Challenger Lyon Qual | 06/09 14:00 | 45 | Matteo Martineau v Harri Heliovaara | 6-4,6-1 | |
| Challenger Shymkent Qual | 06/02 07:00 | 45 | [375] Harri Heliovaara v Tung-Lin Wu [471] | 6-7,3-6 | |
| ITF China F6 | 05/15 03:45 | 25 | Yecong He v Harri Heliovaara | Retired | |
| ITF China F5 | 05/13 03:00 | 29 | Rigele Te v Harri Heliovaara | 7-5,6-4 | |
| ITF China F5 | 05/12 04:40 | 28 | Harri Heliovaara v Yuta Shimizu | 6-1,6-1 | |
| ITF China F5 | 05/11 05:00 | 27 | Kaito Uesugi v Harri Heliovaara | 1-6,2-6 | |
| ITF China F5 | 05/10 03:00 | 26 | Weiqiang Zheng v Harri Heliovaara | 5-7,1-6 | |
| ITF China F5 | 05/08 02:00 | 25 | Zihao Xia v Harri Heliovaara | 6-4,3-6,2-6 | |
| Challenger Glasgow | 05/04 13:50 | 27 | [457] Harri Heliovaara v Matteo Viola [285] | 7-5,2-6,5-7 | |
| Challenger Glasgow | 05/03 15:00 | 26 | James Ward v Harri Heliovaara | 5-7,4-6 | |
| Challenger Glasgow | 05/01 10:45 | 25 | Harri Heliovaara v Jonathan Gray | 6-3,6-1 | |
| Challenger Glasgow Qual | 04/29 15:00 | 46 | Harri Heliovaara v Adrien Bossel | 2-6,7-6,6-4 | |
| Challenger Glasgow Qual | 04/28 14:20 | 45 | Harri Heliovaara v Scott Duncan | 6-1,6-4 | |
| Davis Cup | 04/08 10:30 | 27 | [453] Harri Heliovaara v Ricardas Berankis [84] | 2-6,3-6 | |
| Davis Cup | 04/07 13:00 | 27 | [453] Harri Heliovaara v Laurynas Grigelis [251] | 6-3,1-6,6-3 | |
| ITF Israel F3 | 03/24 07:00 | 28 | Yannick Vandenbulcke v Harri Heliovaara | 6-2,6-2 | |
| ITF Israel F3 | 03/23 07:00 | 27 | Patrik Niklas-Salminen v Harri Heliovaara | 3-6,0-6 | |
| ITF Israel F3 | 03/22 08:00 | 26 | Nikolay Kolobaev v Harri Heliovaara | 3-6,4-6 | |
| ITF Israel F3 | 03/21 09:40 | 25 | Emmanuel Luria v Harri Heliovaara | 0-6,0-6 | |
| ITF Israel F2 | 03/18 13:00 | 29 | Yshai Oliel v Harri Heliovaara | 1-6,3-6 | |
| ITF Israel F2 | 03/17 08:00 | 28 | Alexis Musialek v Harri Heliovaara | 1-6,1-6 | |
| ITF Israel F2 | 03/16 08:00 | 27 | Harri Heliovaara v Ben Patael | 6-4,6-3 | |
| ITF Israel F2 | 03/15 08:00 | 26 | Harri Heliovaara v Patrik Niklas-Salminen | 6-2,6-3 |