Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Parnu | 2021/10/28 11:25 | Ainius Sabaliauskas v Remy Bertola | 1-6,6-7 |
| ITF M15 Parnu | 2021/10/26 09:00 | Karlis Ozolins v Ainius Sabaliauskas | 5-7,4-6 |
| ITF M15 Sozopol | 2021/10/11 10:00 | Yannik Steinegger v Ainius Sabaliauskas | 6-3,6-2 |
| ITF M15 Vyshkovo | 2021/09/20 06:00 | Federico Campana v Ainius Sabaliauskas | 7-5,2-6,10-6 |
| ITF M15 Chornomorsk | 2021/09/01 07:00 | Yan Bondarevskiy v Ainius Sabaliauskas | 7-5,6-2 |
| ITF M15 Chornomorsk | 2021/08/30 12:00 | Maik Steiner v Ainius Sabaliauskas | 7-5,6-7,4-10 |
| ITF M15 Chornomorsk | 2021/08/30 07:00 | Ainius Sabaliauskas v Alexey Dubinin | 6-1,6-1 |
| ITF M15 Chornomorsk | 2021/08/29 09:30 | Ainius Sabaliauskas v Mykyta Rassolov | 6-1,6-2 |
| ITF M25 Sarreguemines | 2021/10/26 08:00 | Karlo Cubelic v Gauthier Onclin | 7-5,4-6,3-6 |
| ITF M25 Sarreguemines | 2021/10/25 09:30 | Karlo Cubelic v Jordan Betesh | 7-5,6-3 |
| ITF M25 Sarreguemines | 2021/10/24 09:25 | Karlo Cubelic v Alen Moritz Hodzic | 6-3,6-3 |
| ITF M15 Doha | 2021/10/20 17:15 | Tao Mu v Karlo Cubelic | 4-6,6-1,6-4 |
| ITF M15 Doha | 2021/10/11 13:30 | Karlo Cubelic v Nico Hornitschek | 7-5,4-6,6-10 |
| ITF M15 Doha | 2021/10/06 17:35 | Karlo Cubelic v Tao Mu | 2-6,3-6 |
| ITF M25 Eupen | 2021/09/07 15:25 | Karlo Cubelic v Maxime Chazal | 3-6,2-6 |
| ITF M15 Oldenzaal | 2021/08/17 07:30 | Mattia Bellucci v Karlo Cubelic | 7-6,7-5 |