Stadium: Court 8 Round: 62 Ground: Clay
| ITF M15 Cairo | 2021/07/25 11:00 | Keisuke Saitoh v Ali Habib | 6-3,3-6,10-5 |
| ITF M15 Antalya | 2021/05/12 06:45 | Orlando Luz v Keisuke Saitoh | 3-6,6-3,6-1 |
| ITF M15 Antalya | 2021/05/11 07:00 | Thomas Deschamps v Keisuke Saitoh | 2-6,5-7 |
| ITF M15 Antalya | 2021/05/10 07:00 | Keisuke Saitoh v Marco Miceli | 5-7,7-5,10-4 |
| ITF M15 Antalya | 2021/05/09 07:00 | Keisuke Saitoh v Arda Azkara | 6-1,6-2 |
| ITF M15 Antalya | 2021/05/02 06:00 | Gerald Melzer v Keisuke Saitoh | 6-4,6-2 |
| ITF M15 Antalya | 2021/04/25 07:00 | Keisuke Saitoh v Daniil Glinka | 0-6,2-6 |
| ITF M15 Antalya | 2021/04/19 07:00 | Emiliano Maggioli v Keisuke Saitoh | 6-4,6-3 |
| ITF M15 Cairo | 2021/07/25 09:30 | Giulio Colacioppo v Marco De Rosa | 2-6,4-6 |
| ITF M15 Cairo | 2021/07/18 09:30 | Fares Zakaria v Marco De Rosa | 6-2,6-7,14-12 |
| ITF M25 Velenje | 2021/07/05 13:50 | Marco De Rosa v Tim Heger | 4-6,2-6 |
| ITF M15 Cairo | 2021/05/03 08:00 | Marco De Rosa v Martin Dimitrov | 7-6,2-6,9-11 |
| ITF M15 Cairo | 2021/05/02 08:00 | Marco De Rosa v Egill Sigurdsson | 4-6,6-4,10-7 |
| ITF M15 Cairo | 2021/04/18 08:30 | Marco De Rosa v Oleksandr Bielinskyi | 2-6,1-6 |
| ITF M15 Opatija | 2021/03/21 11:00 | Marco De Rosa v Lucas Bouquet | 3-6,2-6 |
| ITF M15 Porec | 2021/03/08 11:30 | Damien Wenger v Marco De Rosa | 6-1,6-2 |