Stadium: Court 4 Round: 27 Ground: Hardcourt outdoor
| ITF M25 Tay Ninh | 2019/10/03 02:00 | Nguyen, Daniel v Makoto Ochi | 4-6,6-4,7-5 |
| ITF M25 Tay Ninh | 2019/10/02 05:00 | Nguyen, Daniel v Rogic Hadzalic, Alen | 6-3,6-1 |
| Columbus III, USA | 2019/09/16 17:10 | Nguyen, Daniel v Petit, Gabriel | 6-7,6-3,4-6 |
| Challenger Cary | 2019/09/12 16:25 | Nguyen, Daniel v Aragone, JC | 3-6,2-6 |
| Challenger Cary | 2019/09/11 15:00 | Mitchell Krueger v Nguyen, Daniel | 3-6,6-3,3-6 |
| Challenger Cary | 2019/09/09 21:30 | Nguyen, Daniel v Sigouin, Benjamin | 6-1,6-3 |
| Winston-Salem, USA | 2019/08/18 19:00 | Sarmiento, Raymond v Nguyen, Daniel | 6-2,6-3 |
| Winston-Salem, USA | 2019/08/17 19:40 | Nguyen, Daniel v Arevalo-Gonzalez, Marcelo | 6-4,4-6,7-6 |
| ITF M25 Tay Ninh | 2019/10/02 02:00 | Grigoriy Lomakin v Goncalo Oliveira | 2-6,0-6 |
| Zhuhai, Chine | 2019/09/21 06:50 | Goncalo Oliveira v Schnur, Brayden | 5-7,3-6 |
| Challenger Kaohsiung | 2019/09/17 09:20 | Mukund Sasikumar v Goncalo Oliveira | 7-6,3-6,7-6 |
| Challenger Shanghai | 2019/09/12 05:20 | Gunneswaran, Prajnesh v Goncalo Oliveira | 6-3,6-4 |
| Challenger Shanghai | 2019/09/11 02:30 | Wang, Tak Khunn v Goncalo Oliveira | 7-6,3-6,4-6 |
| Jinan, China | 2019/09/02 07:40 | Igor Sijsling v Goncalo Oliveira | 3-6,2-6 |
| Baotou, Chine | 2019/08/29 05:35 | Aleksandar Vukic v Goncalo Oliveira | 4-6,6-3,0-6 |
| Baotou, Chine | 2019/08/28 05:55 | Luca Castelnuovo v Goncalo Oliveira | 4-6,4-6 |