Stadium: Center Court Round: 24 Ground: Hardcourt outdoor
| Davis Cup | 2019/09/14 04:50 | Zhe Li v Ji Sung Nam | 6-7,6-7 |
| Challenger Jinan | 2019/09/03 04:45 | Ivan Nedelko v Ji Sung Nam | 4-6,7-5,6-3 |
| Challenger Baotou | 2019/08/29 02:00 | Ji Sung Nam v Yan Bai | 3-6,6-4,5-7 |
| Challenger Baotou | 2019/08/27 05:40 | Ji Sung Nam v Arjun Kadhe | 6-3,6-3 |
| Challenger Yokkaichi | 2019/08/09 04:30 | Sho Shimabukuro v Ji Sung Nam | 6-7,6-3,6-2 |
| Challenger Yokkaichi | 2019/08/08 03:20 | Ji Sung Nam v Hiroki Moriya | 6-2,5-7,7-6 |
| Challenger Yokkaichi | 2019/08/06 04:35 | Ji Sung Nam v Jumpei Yamasaki | 6-3,6-2 |
| Challenger Chengdu | 2019/08/02 04:00 | Ji Sung Nam v Hyeon Chung | 6-7,6-1,3-6 |
| ITF M15 Hua Hin | 2019/09/04 05:00 | Cheng-Yu Yu v Yu Hsiou Hsu | 7-6,6-3 |
| ITF M15 Hua Hin | 2019/08/28 03:00 | Kuan-Yi Lee v Cheng-Yu Yu | 2-6,6-2,7-6 |
| ITF M15 Jakarta | 2019/08/20 05:20 | Renta Tokuda v Cheng-Yu Yu | 4-6,6-3,6-4 |
| ITF M15 Jakarta | 2019/08/12 02:30 | Cheng-Yu Yu v Kunal Anand | 6-4,4-6,6-10 |
| ITF M25 Taipei | 2019/07/23 06:10 | Cheng-Yu Yu v Sora Fukuda | 6-3,5-7,6-4 |
| ITF M25 Taipei | 2019/07/20 02:00 | Cheng-Yu Yu v Yu Hsiou Hsu | 5-7,2-6 |
| ITF M25 Taipei | 2019/07/19 02:00 | Jesse Delaney v Cheng-Yu Yu | 0-6,3-6 |
| ITF M25 Taipei | 2019/07/18 10:10 | Cheng-Yu Yu v Yusuke Takahashi | 7-5,6-2 |