| ITF Hong Kong F6 | 2018/01/02 02:00 | Heliovaara, Harri v Bessire, Francesco | 2-6,6-1,6-2 |
| ITF Estonia F4 | 2017/11/10 12:00 | Mylokostov, Denys v Heliovaara, Harri | 7-6,6-4 |
| ITF Estonia F4 | 2017/11/09 12:00 | Heliovaara, Harri v Jonathan Mridha | 7-6,7-5 |
| ITF Estonia F4 | 2017/11/08 13:00 | Bossel, Adrien v Heliovaara, Harri | 6-7,6-7 |
| ITF Estonia F4 | 2017/11/07 13:10 | Sekulic, Milos v Heliovaara, Harri | 3-6,2-6 |
| ITF Estonia F4 | 2017/11/05 09:00 | Heliovaara, Harri v Goles Babic, Marko | 6-3,6-4 |
| ITF Estonia F4 | 2017/11/04 16:00 | Heliovaara, Harri v Gostincar, Domen | 6-0,6-4 |
| ITF Estonia F3 | 2017/11/03 10:50 | Heliovaara, Harri v Evgeny Karlovskiy | 4-6,4-6 |
| ITF Hong Kong F6 | 2018/01/02 03:55 | Chan-Yeong Oh v Tang, Anthony Jackie | 7-5,6-4 |
| ITF Hong Kong F5 | 2017/12/26 05:45 | Tung-Lin Wu v Chan-Yeong Oh | 6-2,7-6 |
| ITF Hong Kong F5 | 2017/12/24 02:00 | Chan-Yeong Oh v Sakai, Yuto | 6-3,6-3 |
| ITF Hong Kong F5 | 2017/12/23 02:00 | Chan-Yeong Oh v Adamson, Alec | 7-5,6-3 |
| Hong Kong F4, Simples | 2017/12/18 02:00 | Liu, Shao-Fan v Chan-Yeong Oh | 7-6,6-2 |
| ITF Korea F4 | 2017/06/22 02:00 | Chan-Yeong Oh v Song, Min-Kyu | 5-7,2-6 |
| ITF Korea F4 | 2017/06/20 03:40 | Chan-Yeong Oh v Lee, Tae-Woo | 7-6,7-6 |
| ITF Korea F3 | 2017/06/13 02:00 | Song, Min-Kyu v Chan-Yeong Oh | 7-5,5-7,6-4 |