Stadium: Show Court Round: 24 Ground: Hardcourt outdoor
| ITF China F9 | 2018/07/08 03:00 | Ji Hoon Son v Yan Bai | 7-6,4-6,4-6 |
| ITF M25 Wuhan | 2019/05/12 02:00 | Yan Bai v Shuichi Sekiguchi | 6-2,6-4 |
| ITF M25 Wuhan | 2019/05/11 02:00 | Yan Bai v Yu Hsiou Hsu | 6-4,6-4 |
| ITF M25 Wuhan | 2019/05/10 02:00 | Yan Bai v Fajing Sun | 7-6,6-1 |
| ITF M25 Wuhan | 2019/05/09 03:10 | Yan Bai v Daisuke Sumizawa | 6-3,6-1 |
| ITF M25 Wuhan | 2019/05/08 02:00 | Yan Bai v Ti Chen | 6-2,6-2 |
| Challenger Seoul | 2019/05/01 02:00 | Yan Bai v Evgeny Donskoy | 6-4,3-6,3-6 |
| Challenger Seoul | 2019/04/30 03:25 | Yan Bai v Jacob Grills | 6-4,6-1 |
| Challenger Nanchang | 2019/04/22 10:00 | Yan Bai v N.Sriram Balaji | 6-2,2-6,6-7 |
| Challenger Seoul | 2019/04/29 02:00 | Ji Sung Nam v Ji Hoon Son | 6-3,6-2 |
| ITF Korea F5 | 2018/08/24 01:15 | Ji Sung Nam v Ji Hoon Son | 6-4,6-2 |
| ITF Korea F5 | 2018/08/23 05:15 | Woo Hyeok Jang v Ji Hoon Son | 6-7,1-6 |
| ITF Korea F5 | 2018/08/21 01:00 | Ren Nakamura v Ji Hoon Son | 6-4,4-6,3-6 |
| Challenger Gwangju | 2018/08/14 06:30 | Bradley Mousley v Ji Hoon Son | 6-3,6-2 |
| Challenger Gwangju Qual | 2018/08/13 01:00 | Yuya Kibi v Ji Hoon Son | 3-6,4-6 |
| Challenger Gwangju Qual | 2018/08/11 03:35 | Ji Hoon Son v Xin Gao | 7-5,6-3 |
| ITF China F10 | 2018/07/10 02:00 | Ji Hoon Son v Xin Gao | 6-7,6-7 |