Stadium: Centre Court Round: 27 Ground: Hardcourt outdoor
| ITF M25 Tay Ninh | 2019/10/10 05:00 | Daniel Nguyen v Arjun Kadhe | 6-2,7-6 |
| ITF M25 Tay Ninh | 2019/10/09 07:35 | Daniel Nguyen v Hiroyasu Ehara | 6-4,6-2 |
| ITF M25 Tay Ninh | 2019/10/06 09:00 | Nam Hoang Ly v Daniel Nguyen | 3-6,5-7 |
| ITF M25 Tay Ninh | 2019/10/05 09:00 | Kazuki Nishiwaki v Daniel Nguyen | 2-6,3-6 |
| ITF M25 Tay Ninh | 2019/10/03 02:00 | Daniel Nguyen v Makoto Ochi | 4-6,6-4,7-5 |
| ITF M25 Tay Ninh | 2019/10/02 05:00 | Daniel Nguyen v Alen Rogic-Hadzalic | 6-3,6-1 |
| Challenger Columbus 3 | 2019/09/16 17:10 | Daniel Nguyen v Gabriel Petit | 6-7,6-3,4-6 |
| Challenger Cary | 2019/09/12 16:25 | Daniel Nguyen v JC Aragone | 3-6,2-6 |
| ITF M25 Tay Ninh | 2019/10/08 05:45 | Sidharth Rawat v Shuichi Sekiguchi | 0-6,1-6 |
| Challenger Kaohsiung | 2019/09/17 12:15 | Shuichi Sekiguchi v Prajnesh Gunneswaran | 3-6,2-6 |
| Challenger Kaohsiung | 2019/09/16 06:05 | Ray Ho v Shuichi Sekiguchi | 6-7,3-6 |
| Challenger Shanghai | 2019/09/12 06:30 | Yasutaka Uchiyama v Shuichi Sekiguchi | 6-4,6-3 |
| Challenger Shanghai | 2019/09/11 06:45 | Shuichi Sekiguchi v Saketh Myneni | 4-6,6-3,7-6 |
| Challenger Shanghai | 2019/09/09 06:05 | Jacob Grills v Shuichi Sekiguchi | 6-3,1-6,1-6 |
| Challenger Jinan | 2019/09/04 06:30 | Akira Santillan v Shuichi Sekiguchi | 6-1,6-2 |
| Challenger Jinan | 2019/09/03 04:55 | Mukund Sasikumar v Shuichi Sekiguchi | 3-6,3-6 |