Stadium: Court B Round: 29 Ground: Hardcourt outdoor
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/25 03:00 | Nam, Ji Sung v Shintaro Imai | 6-4,7-5 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/24 04:00 | Nam, Ji Sung v Khumoyun Sultanov | 6-3,6-1 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/23 06:00 | Nam, Ji Sung v Tanuma, Ryota | 7-6,6-3 |
| Challenger - Gwangju | 2019/05/14 06:00 | Nam, Ji Sung v Sugita, Yuichi | 2-6,2-6 |
| Challenger - Gwangju | 2019/05/13 02:00 | Nam, Ji Sung v Rio Noguchi | 6-2,6-1 |
| Challenger - Busan | 2019/05/06 07:40 | Cem Ilkel v Nam, Ji Sung | 6-4,7-6 |
| Challenger Seoul | 2019/05/01 02:00 | Nam, Ji Sung v Ramkumar Ramanathan | 3-6,6-7 |
| Challenger Seoul | 2019/04/30 03:35 | Nam, Ji Sung v Duckhee Lee | 7-5,6-1 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/25 05:15 | Bourchier, Harry v Sekiguchi, Shuichi | 4-6,4-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/24 04:45 | Sekiguchi, Shuichi v Kelsey Stevenson | 7-6,6-2 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/23 06:45 | Sekiguchi, Shuichi v Jayden Court | 6-4,6-1 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/21 09:55 | Sekiguchi, Shuichi v Ratiwatana, Sonchat | 7-5,6-0 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/12 02:00 | Yan Bai v Sekiguchi, Shuichi | 6-2,6-4 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/11 02:00 | Sekiguchi, Shuichi v Wishaya Trongcharoenchaikul | 7-6,7-5 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/10 03:20 | Lu, Tyler v Sekiguchi, Shuichi | 1-6,0-6 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/09 04:05 | Hong Kit Wong v Sekiguchi, Shuichi | 2-6,3-6 |