Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/05/06 08:25 | Takashi Saito v Alexander Donski | 6-7,1-6 |
| ITF - M15 Monastir | 2021/05/05 08:25 | Guido Ivan Justo v Takashi Saito | 1-6,1-6 |
| ITF - M15 Monastir | 2021/05/04 08:00 | Takashi Saito v Marcello Serafini | 7-5,2-6,10-8 |
| ITF - M15 Monastir | 2021/05/03 12:00 | Takashi Saito v Francesco Cano | 6-0,6-3 |
| ITF - M15 Sharm El Sheikh | 2021/03/01 07:30 | Takashi Saito v Manuel Mazza | 4-6,3-6 |
| ITF - M15 Sharm El Sheikh | 2021/02/24 07:30 | Takashi Saito v Yu Hsiou Hsu | 1-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2021/02/23 09:20 | Takashi Saito v Andres Gabriel Ciurletti | 7-5,6-1 |
| ITF - M15 Sharm El Sheikh | 2021/02/21 15:30 | Takashi Saito v Emiliano Troche | 6-1,6-1 |
| ITF - M15 Monastir | 2021/05/03 12:00 | Luca Castagnola v Mattia Frinzi | 2-6,6-7 |
| ITF - M15 Monastir | 2021/03/30 08:00 | Luca Castagnola v Julien De Cuyper | 3-6,7-6,8-10 |
| ITF - M15 Monastir | 2021/03/29 10:30 | Colin Sinclair v Luca Castagnola | 4-6,6-3,6-10 |
| ITF - M15 Monastir | 2021/03/28 08:00 | Kirill Mishkin v Luca Castagnola | 3-6,0-6 |
| ITF - M15 Monastir | 2021/03/22 09:00 | Pietro Pampanin v Luca Castagnola | 6-2,2-6,11-9 |
| ITF - M15 Monastir | 2021/03/21 15:00 | Luca Castagnola v Ayoub Chakrouni | 6-4,6-3 |
| ITF - M15 Monastir | 2021/03/15 08:00 | Alessandro Ingarao v Luca Castagnola | 6-2,5-7,10-6 |
| ITF - M15 Monastir | 2021/03/14 10:00 | Fausto Tabacco v Luca Castagnola | 5-7,3-6 |