Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| Challenger Winnipeg | 2019/07/09 17:30 | Alexis Galarneau v Nguyen, Daniel | 6-1,1-6,5-7 |
| Challenger Columbus | 2019/06/11 17:35 | Nguyen, Daniel v Thai-Son Kwiatkowski | 6-4,2-6,4-6 |
| Challenger Columbus | 2019/06/10 20:45 | Nguyen, Daniel v Gijs Brouwer | 6-4,6-7,7-5 |
| Little Rock, USA | 2019/06/07 17:00 | Shane, Ryan v Nguyen, Daniel | 3-6,6-3,6-4 |
| Little Rock, USA | 2019/06/05 19:00 | Nguyen, Daniel v Filip Peliwo | 4-6,6-1,6-0 |
| Little Rock, USA | 2019/06/04 20:45 | Nguyen, Daniel v King, Kevin | 6-2,6-7,6-3 |
| Challenger - Sarasota | 2019/04/15 18:40 | Nguyen, Daniel v Shane, Ryan | 6-7,5-7 |
| Zhangjiagang, China | 2019/03/19 05:45 | Nguyen, Daniel v Lorenzo Giustino | 0-6,3-6 |
| Challenger Winnipeg | 2019/07/10 20:05 | Toshihide Matsui v Enzo Couacaud | 3-6,2-6 |
| Wimbledon, London, Great Britain | 2019/06/27 10:00 | Kamil Majchrzak v Enzo Couacaud | 6-2,6-4,6-0 |
| Wimbledon, London, Great Britain | 2019/06/26 10:00 | Enzo Couacaud v Gianluca Mager | 6-3,6-4 |
| Wimbledon, London, Great Britain | 2019/06/24 11:00 | Enzo Couacaud v Sebastian Ofner | 3-6,6-3,6-1 |
| Challenger - Nottingham | 2019/06/11 15:25 | Smith, John-Patrick v Enzo Couacaud | 6-4,6-2 |
| French Open, Paris, France | 2019/05/24 11:05 | Enzo Couacaud v Elliot Benchetrit | 6-4,6-7,2-6 |
| French Open, Paris, France | 2019/05/22 15:20 | Enzo Couacaud v de Greef, Arthur | 6-0,6-3 |
| French Open, Paris, France | 2019/05/21 09:45 | Lorenzi, Paolo v Enzo Couacaud | 6-4,4-6,0-6 |