| Ukraine Int. | 2021/09/09 08:20 | Ken Yon Ong v Collins Valentine Filimon | W | 2-0 |
| Ukraine Int. | 2021/09/08 09:20 | Markus Barth v Ken Yon Ong | W | 0-2 |
| Hellas Int. | 2021/09/03 08:55 | Sacha Leveque v Ken Yon Ong | L | 2-1 |
| Hellas Int. Qual | 2021/09/02 15:30 | Ouazzen, Martin v Ken Yon Ong | W | 1-2 |
| Hellas Int. Qual | 2021/09/02 08:00 | Kian-Yu Oei v Ken Yon Ong | W | 0-2 |
| Latvia Int. Qual | 2021/08/27 06:00 | Ken Yon Ong v Shun Yang Lee | L | 0-2 |
| Latvia Int. Qual | 2021/08/26 13:30 | Ken Yon Ong v Srayas Padmanabhan Vasudevan | W | 2-0 |
| Ukraine Int. | 2021/09/09 08:20 | Leonov, Kyrylo v Rohan Gurbani | W | 2-1 |
| Ukraine Int. | 2021/09/08 09:20 | Kartikey Gulshan Kumar v Leonov, Kyrylo | W | 0-2 |
| Latvia Int. | 2019/06/01 14:30 | Magnus Johannesen v Leonov, Kyrylo | L | 2-1 |
| Latvia Int. | 2019/06/01 10:00 | Qin, Z. v Leonov, Kyrylo | W | 0-2 |
| Slovenia Int. | 2019/05/16 09:00 | Leonov, Kyrylo v Heino, Iikka | L | 0-2 |
| Open de Pologne - Qualif. | 2019/03/28 09:30 | Milan Dratva v Leonov, Kyrylo | L | 2-1 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/02/20 10:30 | Ditlev Jaeger Holm v Leonov, Kyrylo | L | 2-0 |
| Giraldilla Int. XD | 2018/11/02 10:25 | Dimitar Yanakiev v Leonov, Kyrylo | L | 2-0 |