Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF Pakistan F3 | 2018/12/17 05:30 | Onishi, Ken v Lorenzo Bocchi | 6-7,3-6 |
| ITF Czech Republic F4 Qual | 2018/06/23 08:00 | Onishi, Ken v Samuel Puskar | 3-6,3-6 |
| ITF Hungary F4 | 2018/06/12 11:25 | Heras, Patricio v Onishi, Ken | 3-6,6-3,6-1 |
| ITF Hungary F4 Qual | 2018/06/11 08:00 | Onishi, Ken v Kristjan Tamm | 6-3,2-6,6-3 |
| ITF Hungary F4 Qual | 2018/06/10 08:00 | Onishi, Ken v Boris Butulija | 6-4,6-7,6-4 |
| ITF Czech Republic F3 | 2018/05/31 12:35 | Marek Jaloviec v Onishi, Ken | 6-2,6-3 |
| ITF Hungary F3 | 2018/05/23 08:00 | Bensoussan, Samuel v Onishi, Ken | 6-1,6-4 |
| ITF Hungary F3 | 2018/05/22 11:20 | Onishi, Ken v Maruscak, Matej | 6-1,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/03/04 08:00 | Tsivadze, George v Kai Lemstra | 2-6,6-4,10-3 |
| ITF Kazakhstan F8 | 2018/09/24 07:00 | Tsivadze, George v Fufygin, Mikhail | 4-6,6-3,3-6 |
| ITF Kazakhstan F7 | 2018/09/19 06:00 | Tsivadze, George v van Beem, Colin | 6-7,2-6 |
| ITF Kazakhstan F7 | 2018/09/17 07:00 | Tsivadze, George v Sabanin, Yan | 6-2,6-1 |
| ITF Belarus F3 | 2018/08/22 09:35 | Tsivadze, George v David Poljak | 3-6,3-6 |
| ITF Belarus F3 | 2018/08/21 08:40 | Tsivadze, George v Beibit Zhukayev | 6-3,6-3 |
| ITF Belarus F3 | 2018/08/20 10:00 | Tsivadze, George v Moroz, Danila | 6-1,6-0 |
| ITF Belarus F3 | 2018/08/19 07:00 | Tsivadze, George v Skindzer, Zhan | 6-1,6-3 |