Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Sharm El Sheikh | 2021/03/31 12:05 | Niki, Takuto v Fares Zakaria | 6-2,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/03/25 07:30 | Niki, Takuto v Marek Gengel | 1-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/24 07:30 | Toby Martin v Niki, Takuto | 2-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/18 09:40 | Makoto Ochi v Niki, Takuto | 6-3,6-2 |
| ITF - M15 Sharm El Sheikh | 2021/03/17 13:55 | Niki, Takuto v Filip Peliwo | 7-6,6-2 |
| ITF - M15 Sharm El Sheikh | 2021/03/10 14:50 | Niki, Takuto v Mukund Sasikumar | 1-6,7-6,6-7 |
| ITF - M15 Sharm El Sheikh | 2021/03/03 10:40 | Pervolarakis, Michail v Niki, Takuto | 7-6,7-5 |
| Aktobe, Singles Qualifying M-ITF-KAZ-02A | 2020/02/19 05:00 | Maulenov, Timur v Niki, Takuto | 7-6,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/03/31 09:50 | Deviatiarov, Marat v Bega, Alessandro | 0-6,3-6 |
| Challenger - Lugano | 2021/03/21 10:25 | Ryan Peniston v Bega, Alessandro | 6-3,6-0 |
| ATP - Acapulco | 2021/03/14 02:40 | Bega, Alessandro v Botic Van De Zandschulp | 6-7,1-6 |
| Challenger St. Petersburg | 2021/03/08 07:00 | Bega, Alessandro v Matija Pecotic | 3-6,3-6 |
| Challenger St. Petersburg Qual | 2021/03/07 07:00 | Bourchier, Harry v Bega, Alessandro | 2-6,3-6 |
| Challenger St. Petersburg | 2021/03/01 08:30 | Bega, Alessandro v Lucas Catarina | 2-6,3-6 |
| Challenger St. Petersburg | 2021/02/28 09:20 | Bega, Alessandro v Alexey Zakharov | 6-4,6-2 |
| ATP Singapore | 2021/02/21 06:20 | Christopher Eubanks v Bega, Alessandro | 6-1,6-2 |