Stadium: Centre Court Round: 26 Ground: Hardcourt outdoor
| ATP Winston-Salem | 2019/08/18 19:00 | Raymond Sarmiento v Daniel Nguyen | 6-2,6-3 |
| ATP Winston-Salem | 2019/08/17 19:40 | Daniel Nguyen v Marcelo Arevalo | 6-4,4-6,7-6 |
| ITF M25 Memphis | 2019/08/16 20:00 | Roberto Cid Subervi v Daniel Nguyen | 6-4,4-6,6-2 |
| ITF M25 Memphis | 2019/08/15 23:00 | Kevin King v Daniel Nguyen | 4-6,3-6 |
| ITF M25 Memphis | 2019/08/14 15:00 | Liam Caruana v Daniel Nguyen | 4-6,6-7 |
| Challenger Winnipeg | 2019/07/13 17:00 | Brayden Schnur v Daniel Nguyen | 6-2,7-5 |
| Challenger Winnipeg | 2019/07/12 17:00 | Daniel Nguyen v Antoine Hoang | 7-6,4-6,6-3 |
| Challenger Winnipeg | 2019/07/11 16:00 | Daniel Nguyen v Enzo Couacaud | 1-6,6-3,6-2 |
| Challenger Yokkaichi | 2019/08/07 02:00 | Toshihide Matsui v Makoto Ochi | 7-6,7-6 |
| Challenger Chengdu | 2019/07/30 05:10 | Makoto Ochi v Tatsuma Ito | 4-6,3-6 |
| ITF M25 Taipei | 2019/07/27 02:00 | Tsung-Hua Yang v Makoto Ochi | 6-2,7-5 |
| ITF M25 Taipei | 2019/07/26 02:00 | Makoto Ochi v Seita Watanabe | 6-4,7-6 |
| ITF M25 Taipei | 2019/07/25 02:00 | Makoto Ochi v Kento Takeuchi | 6-4,7-6 |
| ITF M25 Taipei | 2019/07/24 02:00 | Makoto Ochi v Yu Hsiou Hsu | 6-2,6-4 |
| ITF M25 Taipei | 2019/07/18 02:00 | Makoto Ochi v Taisei Ichikawa | 1-6,2-6 |
| ITF M25 Taipei | 2019/07/17 02:00 | Makoto Ochi v Jie-Ming Pai | 7-5,6-4 |