Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/09/08 08:00 | Niki, Takuto v Lucca Pinto | 6-2,6-2 |
| ITF - M15 Monastir | 2021/09/01 09:30 | Niki, Takuto v Guy Orly Iradukunda | 6-2,2-6,3-6 |
| ITF M15 Castelo Branco | 2021/07/28 17:20 | Niki, Takuto v Luca Giacomini | 4-6,5-7 |
| ITF M25 Idanha-A-Nova | 2021/07/21 12:05 | Niki, Takuto v Nicolas Moreno De Alboran | 3-6,2-6 |
| ITF M25 Idanha-A-Nova | 2021/07/15 08:00 | Niki, Takuto v Khan, Zane | 2-6,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/13 14:15 | Niki, Takuto v Natan Rodrigues | 6-2,6-2 |
| ITF M15 Almada | 2021/07/08 11:15 | Diego F Flores v Niki, Takuto | 6-7,6-3,6-4 |
| ITF M15 Almada | 2021/07/07 08:30 | David Jorda Sanchis v Niki, Takuto | 2-6,2-6 |
| ITF - M15 Monastir | 2021/09/08 08:00 | Masamichi Imamura v Taisei Ichikawa | 6-3,6-1 |
| ITF - M15 Monastir | 2021/09/07 08:00 | Evgeny Philippov v Masamichi Imamura | 6-3,1-6,9-11 |
| ITF - M15 Monastir | 2021/09/06 11:00 | Alex Knaff v Masamichi Imamura | 6-2,3-6,3-10 |
| ITF - M15 Monastir | 2021/09/05 11:00 | Raphael Calzi v Masamichi Imamura | 5-7,0-6 |
| ITF - M15 Monastir | 2021/08/29 08:00 | August Holmgren v Masamichi Imamura | 6-4,6-2 |
| ITF - M15 Monastir | 2021/08/22 10:00 | Masamichi Imamura v Chavez Villalpando, Luis Diego | 6-7,6-1,5-10 |
| ITF - M15 Monastir | 2021/08/19 07:30 | Luciano Darderi v Masamichi Imamura | 6-3,6-0 |
| ITF - M15 Monastir | 2021/08/18 07:30 | Masamichi Imamura v Mattias Southcombe | 6-3,6-1 |