Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Idanha-A-Nova MD | 2021/07/17 10:45 | Fancutt/Hoyt v Niki/Uesugi | 6-3,6-2 |
| ITF M25 Idanha-A-Nova MD | 2021/07/16 12:45 | Niki/Uesugi v Araujo/Coelho | 6-4,4-6,10-6 |
| ITF M25 Idanha-A-Nova MD | 2021/07/13 17:30 | Johns/Sibanda v Niki/Uesugi | 4-6,6-3,2-10 |
| ITF M15 Almada MD | 2021/07/09 12:20 | Coelho/Rodrigues v Niki/Uesugi | 7-6,6-1 |
| ITF M15 Almada MD | 2021/07/08 16:10 | Araujo/Vale v Niki/Uesugi | 6-7,7-5,6-10 |
| ITF M15 Almada MD | 2021/07/07 13:20 | Niki/Uesugi v Reis da Silva/Tajima | 6-3,7-6 |
| ITF M15 Kashiwa MD | 2019/04/02 07:25 | Fukuda/Mochizuki v Niki/Uesugi | 3-6,6-2,10-6 |
| ITF Japan F2 MD | 2017/03/18 02:00 | Niki/Uesugi v Kikuchi/Takeshima | 7-6,6-7,10-3 |