Stadium: Centre Court Round: 25 Ground: Hardcourt outdoor
| 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 |
| Challenger Cary | 2019/09/11 15:00 | Mitchell Krueger v Daniel Nguyen | 3-6,6-3,3-6 |
| Challenger Cary | 2019/09/09 21:30 | Daniel Nguyen v Benjamin Sigouin | 6-1,6-3 |
| ITF M15 Hua Hin | 2019/08/29 03:00 | Yuttana Charoenphon v Hiroyasu Ehara | 1-6,0-6 |
| ITF M15 Hua Hin | 2019/08/28 03:00 | Seon Yong Han v Hiroyasu Ehara | 1-6,5-7 |
| ITF M15 Jakarta | 2019/08/21 02:30 | Haadin Bava v Hiroyasu Ehara | 7-5,6-4 |
| ITF M15 Jakarta | 2019/08/15 02:30 | Hiroyasu Ehara v Matthew Romios | 2-6,1-6 |
| ITF M15 Jakarta | 2019/08/14 05:25 | Hiroyasu Ehara v Justin Barki | 6-7,6-4,6-0 |
| ITF M15 Akishima | 2019/06/13 01:00 | Yuta Kikuchi v Hiroyasu Ehara | 6-3,6-2 |
| ITF M15 Akishima | 2019/06/12 01:00 | Oh-Hee Kwon v Hiroyasu Ehara | 1-6,3-6 |
| ITF M15 Guam | 2019/06/09 00:00 | Gengo Kikuchi v Hiroyasu Ehara | 6-2,6-2 |