Estádio: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Ulcinj | 2021/09/21 08:00 | Mariano Navone v Keisuke Saitoh | 6-2,7-6 |
| ITF - M15 Ulcinj | 2021/09/13 08:00 | Keisuke Saitoh v Alexandre Aubriot | 5-7,4-6 |
| ITF - M15 Monastir | 2021/09/01 09:30 | Omni Kumar v Keisuke Saitoh | 6-4,6-2 |
| ITF - M15 Monastir | 2021/08/29 10:30 | Keisuke Saitoh v Michel-Alexandre Fortin | 6-3,6-1 |
| ITF - M15 Monastir | 2021/08/25 07:30 | Keisuke Saitoh v Jumpei Yamasaki | 1-6,1-6 |
| ITF - M15 Monastir | 2021/08/24 07:30 | Keisuke Saitoh v Rishi Reddy | 6-4,6-3 |
| ITF - M15 Monastir | 2021/08/23 08:00 | Keisuke Saitoh v Bastian A U Santander | 6-2,6-0 |
| ITF - M15 Monastir | 2021/08/22 07:30 | Keisuke Saitoh v Bryan Aguiar Kuntz | 6-4,6-4 |
| ITF - M15 Monastir | 2021/12/20 09:00 | Preston Connor v Egor Tsarapkin | 1-6,3-6 |
| ITF - M15 Monastir | 2021/12/13 08:00 | Matas Vasiliauskas v Preston Connor | 6-1,6-0 |
| ITF - M15 Monastir | 2021/12/12 08:00 | Preston Connor v Adrian Arcon | 1-6,6-1,10-6 |
| ITF - M15 Monastir | 2021/12/05 10:30 | Preston Connor v Maxence Rivet | 2-6,4-6 |
| ITF - M15 Monastir | 2021/12/01 08:30 | Florent Bax v Preston Connor | 6-1,6-1 |
| ITF - M15 Monastir | 2021/11/21 10:00 | Preston Connor v Yamato Sueoka | 0-6,2-6 |
| ITF - M15 Monastir | 2021/11/01 09:00 | Alexis Boureau v Preston Connor | 6-1,6-0 |
| ITF - M15 Monastir | 2021/10/26 13:55 | Preston Connor v Daniil Glinka | 2-6,2-6 |