Stadium: Court 8 Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/04/25 09:00 | Remy Bertola v Janis, Jason | 6-0,6-1 |
| ITF - M15 Monastir | 2021/04/18 12:00 | Giorgio Ricca v Janis, Jason | 6-1,6-0 |
| ITF - M15 Monastir | 2021/04/12 08:00 | Janis, Jason v Kawahashi, Yuta | 1-6,4-6 |
| ITF - M15 Monastir | 2021/04/11 08:00 | Knoess, Vincent v Janis, Jason | 0-6,3-6 |
| ITF - M15 Monastir | 2021/02/28 09:00 | Valentin Lapalu v Janis, Jason | 6-1,6-1 |
| ITF - M15 Monastir | 2021/02/21 11:00 | Daiki Yoshimura v Janis, Jason | 6-0,6-2 |
| ITF - M15 Monastir | 2021/02/14 08:30 | Giacalone, Omar v Janis, Jason | 6-2,6-1 |
| ITF - M15 Monastir | 2021/02/10 08:30 | Janis, Jason v Erler, Alexander | 0-6,4-6 |
| ITF - M15 Monastir | 2021/05/04 08:00 | Kawahashi, Yuta v Frinzi, Mattia | 6-2,7-5 |
| ITF - M15 Monastir | 2021/05/03 12:00 | Luca Castagnola v Frinzi, Mattia | 2-6,6-7 |
| ITF - M15 Monastir | 2021/05/02 12:00 | Theo Arribage v Frinzi, Mattia | 6-7,1-6 |
| ITF - M15 Opatija | 2021/03/23 10:20 | Aleksandre Bakshi v Frinzi, Mattia | 6-2,6-3 |
| ITF - M15 Opatija | 2021/03/22 13:15 | Loncar, Stefan v Frinzi, Mattia | 3-6,6-7 |
| ITF - M15 Opatija | 2021/03/21 08:00 | Radojkovic, Milan v Frinzi, Mattia | 0-6,1-6 |
| ITF - M15 Rovinj | 2021/03/14 08:30 | Krstanovic, Josip v Frinzi, Mattia | 6-2,7-6 |
| ITF - M15 Porec | 2021/03/09 09:00 | Gergely Madarasz v Frinzi, Mattia | 7-5,6-3 |