Estadio: Hard 21 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/05/20 06:30 | Takuto Niki v Ze Zhang | 5-7,3-6 |
| ITF M15 Heraklion | 2021/05/19 09:45 | Takuto Niki v Mark Whitehouse | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2021/04/07 12:45 | Volodymyr Uzhylovskyi v Takuto Niki | 7-6,3-6,6-4 |
| ITF M15 Sharm El Sheikh | 2021/04/01 09:25 | Takuto Niki v Alessandro Bega | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2021/03/31 12:05 | Takuto Niki v Fares Zakaria | 6-2,6-4 |
| ITF M15 Sharm El Sheikh | 2021/03/25 07:30 | Takuto Niki v Marek Gengel | 1-6,0-6 |
| ITF M15 Sharm El Sheikh | 2021/03/24 07:30 | Toby Martin v Takuto Niki | 2-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/18 09:40 | Makoto Ochi v Takuto Niki | 6-3,6-2 |
| ITF M15 Heraklion | 2021/05/25 06:30 | Federico Arnaboldi v Matthew Dellavedova | 6-2,6-3 |
| ITF M15 Heraklion | 2021/05/24 06:30 | Federico Arnaboldi v Matas Vasiliauskas | 6-3,6-0 |
| ITF M15 Heraklion | 2021/05/23 06:30 | Federico Arnaboldi v Johann Lars | 6-1,6-2 |
| ITF 15 Antalya | 2021/04/23 08:25 | Federico Arnaboldi v Nicolae Frunza | 3-6,2-6 |
| ITF 15 Antalya | 2021/04/22 08:30 | Yshai Oliel v Federico Arnaboldi | 3-6,4-6 |
| ITF 15 Antalya | 2021/04/21 10:00 | Peter Fajta v Federico Arnaboldi | 3-6,4-6 |
| ITF 15 Antalya | 2021/04/20 07:00 | Federico Arnaboldi v Ivan Sergeyev | 6-2,7-6 |
| ITF 15 Antalya | 2021/04/19 09:00 | Federico Arnaboldi v Kristof Minarik | 6-4,6-2 |