Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2021/10/05 09:30 | Daiki Yoshimura v Pavlos Parson | 6-2,7-5 |
| ITF M15 Sharm El Sheikh | 2021/10/04 12:00 | Pavlos Parson v Roman Nashatyrkin | 3-6,7-6,10-4 |
| ITF M15 Sharm El Sheikh | 2021/10/03 11:30 | Pavlos Parson v Eirik Groener | 7-6,1-6,11-9 |
| ITF M15 Cairo | 2021/01/17 07:00 | Pavlos Parson v Seita Watanabe | 3-6,5-7 |
| ITF M15 Chornomorsk | 2021/08/30 12:30 | Simonas Zukauskas v Federico Campana | 3-6,3-6 |
| ITF M15 Chornomorsk | 2021/08/30 07:00 | Simonas Zukauskas v Kaya Arinc | 6-4,6-2 |
| ITF M15 Oldenzaal | 2021/08/15 10:15 | Simonas Zukauskas v Lewie Lane | 3-6,2-6 |
| ITF M15 Gdynia | 2021/08/09 10:30 | Petr Hajek v Simonas Zukauskas | 6-0,6-1 |
| ITF M15 Gdynia | 2021/08/08 08:00 | Martins Rocens v Simonas Zukauskas | 6-4,5-7,8-10 |
| ITF M25 Wroclaw | 2021/06/27 11:00 | Moritz Trocker v Simonas Zukauskas | 6-4,6-0 |
| ITF M15 Kouvola | 2021/05/27 11:25 | Luca Castelnuovo v Simonas Zukauskas | 6-1,6-3 |
| ITF M15 Kouvola | 2021/05/26 17:00 | August Ehrnrooth v Simonas Zukauskas | 6-7,6-4,6-7 |