Stadium: Centre Court Round: 26 Ground: Hardcourt outdoor
| 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 Memphis | 2019/08/16 20:00 | Roberto Cid Subervi v Nguyen, Daniel | 6-4,4-6,6-2 |
| ITF M25 Tay Ninh | 2019/10/02 02:00 | Arjun Kadhe v Makoto Ochi | 2-6,6-2,2-6 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/29 03:00 | Makoto Ochi v Sabanin, Yan | 6-4,6-7,6-3 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/28 02:00 | Makoto Ochi v Ivanov, Vladimir | 3-6,6-4,6-3 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/27 03:40 | Makoto Ochi v Wang, Chukang | 3-6,6-2,6-4 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/26 03:50 | Makoto Ochi v Kousuke Ogura | 6-2,6-1 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/24 05:10 | Makoto Ochi v Ye Cong Mo | 6-0,6-2 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/21 04:55 | Makoto Ochi v Ryota Tanuma | 2-6,6-1,3-6 |
| Nanchang, Singles M-ITF-CHN-16A | 2019/09/20 05:00 | Makoto Ochi v Li, Jianhui | 6-2,6-2 |