| ITF M15 Hyvinkaa | 08/03 08:25 | 25 | Hietaranta, Roni Mikael v Amaury Raynel | 6-7,6-4,2-6 | |
| ITF M15 Vaasa | 06/07 07:00 | 25 | Edison Ambarzumjan v Hietaranta, Roni Mikael | 6-4,6-4 | |
| ITF M15 Helsinki | 08/12 07:00 | 27 | Hietaranta, Roni Mikael v Charles Broom | 2-6,3-6 | |
| ITF M15 Helsinki | 08/11 07:00 | 26 | Lofman, Aleksi v Hietaranta, Roni Mikael | 1-6,7-6,4-6 | |
| ITF M15 Helsinki | 08/10 11:05 | 25 | Dhokia, Rahul v Hietaranta, Roni Mikael | 3-6,1-6 | |
| ITF M15 Helsinki | 08/09 07:00 | 54 | Hietaranta, Roni Mikael v Perkkola, Ville | 6-0,6-1 | |
| ITF M15 Parnu | 08/03 07:15 | 25 | Federico Campana v Hietaranta, Roni Mikael | 6-3,4-6,6-1 | |
| ITF M15 Parnu | 08/02 07:15 | 54 | Hietaranta, Roni Mikael v Pijus Vaitiekunas | 6-0,7-5 | |
| ITF M15 Casablanca | 07/14 14:00 | 26 | Federico Campana v Hietaranta, Roni Mikael | 1-6,6-3,6-2 | |
| ITF M15 Casablanca | 07/12 09:00 | 25 | Hietaranta, Roni Mikael v Edouard Villoslada | 6-4,6-1 | |
| ITF M15 Casablanca | 07/11 09:00 | 54 | Hietaranta, Roni Mikael v Jan Jermar | 6-4,6-3 | |
| ITF M15 Vaasa | 06/02 06:30 | 26 | Hietaranta, Roni Mikael v Hazem Naw | 2-6,3-6 | |
| ITF M15 Vaasa | 06/01 12:35 | 25 | Vesa Ahti v Hietaranta, Roni Mikael | 3-6,3-6 | |
| ITF M15 Helsinki | 06/02 11:50 | 25 | Hietaranta, Roni Mikael v Kyrian Jacquet | 2-6,1-6 | |
| ITF M15 Helsinki | 06/01 07:00 | 54 | Antinheimo, Oskar v Hietaranta, Roni Mikael | 2-6,1-6 | |
| ITF M15 Helsinki | 05/31 10:00 | 54 | Leikola, Otto v Hietaranta, Roni Mikael | 1-6,0-6 | |
| ITF M15 Kouvola | 05/26 14:40 | 25 | Luca Castelnuovo v Hietaranta, Roni Mikael | 6-3,4-6,6-3 | |
| ITF M15 Kouvola | 05/25 08:30 | 54 | Hietaranta, Roni Mikael v Jussi Salmio | 6-1,6-1 | |
| ITF M15 Parnu | 11/04 08:00 | 25 | Siimar, Mattias v Hietaranta, Roni Mikael | 6-3,6-2 | |
| ITF M15 Parnu | 11/02 11:00 | 54 | Hietaranta, Roni Mikael v Burdet, Adrien | 5-7,6-2,13-11 | |
| ITF M15 Parnu | 10/30 12:25 | 25 | Muscheites, Lasse v Hietaranta, Roni Mikael | 6-4,6-1 | |
| ITF M15 Parnu | 10/29 08:00 | 54 | Hietaranta, Roni Mikael v Mansson, Marcus | 2-6,7-6,10-4 | |
| Pajulahti, Singles M-ITF-FIN-02A | 09/18 12:30 | 25 | Yanki Erel v Hietaranta, Roni Mikael | 6-0,6-2 | |
| ITF M15 Helsinki | 08/22 08:00 | 26 | Hietaranta, Roni Mikael v Juan Manuel Cerundolo | 2-6,2-6 | |
| ITF M15 Helsinki | 08/21 13:30 | 25 | Hietaranta, Roni Mikael v Sarpola, Masi | 6-4,6-3 | |
| ITF M15 Parnu | 07/18 08:45 | 25 | Goldsteiner, Peter v Hietaranta, Roni Mikael | 6-1,7-5 | |
| ITF M15 Parnu | 07/15 13:00 | 54 | Grinvalds, Roberts v Hietaranta, Roni Mikael | 2-6,6-0,7-10 | |
| ITF M15 Parnu | 07/15 08:30 | 54 | Kantola, Juho v Hietaranta, Roni Mikael | 2-6,2-6 | |
| ITF Finland F4 | 11/13 12:50 | 25 | Hietaranta, Roni Mikael v Evgenii Tiurnev | 6-0,2-6,3-6 | |
| ITF Estonia F3 | 11/07 12:05 | 26 | Hietaranta, Roni Mikael v Aliaksandr Liaonenka | 4-6,7-6,5-7 |