Stadium: Court B Round: 28 Ground: Hardcourt outdoor
| ITF - M25 Nonthaburi | 2019/05/25 03:00 | Ji Sung Nam v Shintaro Imai | 6-4,7-5 |
| ITF M15 Nishi-Tama | 2019/03/10 01:00 | Shintaro Imai v Ji Sung Nam | 6-2,6-2 |
| ITF - M15 Nonthaburi | 2019/11/29 04:25 | Benjamin Pietri v Shintaro Imai | 2-6,1-6 |
| ITF - M15 Nonthaburi | 2019/11/28 04:40 | Jeamoon Lee v Shintaro Imai | 0-6,6-1,6-7 |
| ITF - M15 Nonthaburi | 2019/11/26 07:10 | Kento Takeuchi v Shintaro Imai | 3-6,2-6 |
| Challenger - Kobe | 2019/11/09 05:45 | Shintaro Imai v Yuichi Sugita | 3-6,6-4,1-6 |
| Challenger - Kobe | 2019/11/08 04:30 | Hiroki Moriya v Shintaro Imai | 3-6,6-7 |
| Challenger - Kobe | 2019/11/07 03:40 | Shintaro Imai v Renta Tokuda | 3-6,6-3,6-2 |
| Challenger - Kobe | 2019/11/05 02:50 | Duckhee Lee v Shintaro Imai | 4-6,2-6 |
| Challenger - Kobe | 2019/11/04 07:00 | Shintaro Imai v Seita Watanabe | 6-4,6-2 |
| ITF - M15 Nonthaburi | 2019/11/29 02:55 | Sora Fukuda v Ji Sung Nam | 2-6,1-6 |
| ITF - M15 Nonthaburi | 2019/11/28 02:30 | Takashi Saito v Ji Sung Nam | 7-5,3-6,1-6 |
| ITF - M15 Nonthaburi | 2019/11/26 07:20 | Taisei Ichikawa v Ji Sung Nam | 5-7,2-6 |
| Challenger - Kobe | 2019/11/07 02:00 | Yuki Mochizuki v Ji Sung Nam | 3-6,6-1,1-6 |
| Challenger - Kobe | 2019/11/06 02:55 | Ben Patael v Ji Sung Nam | 2-6,4-6 |
| Challenger Shenzhen 2 | 2019/10/29 03:45 | Ji Sung Nam v Zhe Li | 2-6,1-6 |
| Challenger Liuzhou | 2019/10/23 02:30 | Ji Sung Nam v Danilo Petrovic | 3-6,4-6 |
| Challenger Liuzhou | 2019/10/22 02:00 | Ji Sung Nam v Kaichi Uchida | 6-3,7-6 |