Stadium: Court 2 Round: 62 Ground: Clay
| ITF M25 Marburg | 2021/07/05 12:25 | Jing L Weng v Raphael Collignon | 2-6,6-3,8-10 |
| ITF M25 The Hague | 2021/06/27 08:00 | Guy Den Heijer v Jing L Weng | 6-3,6-4 |
| ITF M15 Antalya | 2021/05/09 07:00 | Jing L Weng v Mark Tryakshin | 2-6,5-7 |
| ITF M15 Antalya | 2021/05/02 06:00 | Vladislav Melnic v Jing L Weng | 6-4,6-0 |
| ITF M25 Meerbusch | 2021/04/12 09:30 | David Pichler v Jing L Weng | 6-2,6-1 |
| ITF M25 Meerbusch | 2021/04/11 12:45 | Jing L Weng v Amer Naow | 6-4,7-5 |
| ITF M15 Sharm El Sheikh | 2021/03/10 11:20 | Jing L Weng v Lukas Krainer | 2-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/02/28 11:00 | Jing L Weng v Lukas Krainer | 0-6,3-6 |
| ITF M25 Frankfurt am Main | 2021/08/10 08:20 | Daniel Cukierman v Karlo Cubelic | 2-6,6-4,10-2 |
| ITF M25 Frankfurt am Main | 2021/08/09 11:05 | Jan Soeren Hain v Karlo Cubelic | 3-6,2-6 |
| ITF M25 Marburg | 2021/07/05 13:55 | Dominik Recek v Karlo Cubelic | 6-4,6-2 |
| ITF M15 Antalya | 2021/06/06 07:30 | Karlo Cubelic v Vitali Shvets | 5-7,6-4,3-10 |
| ITF M15 Jerusalem | 2021/05/13 07:00 | Karlo Cubelic v Felix Corwin | 2-6,0-6 |
| ITF M15 Jerusalem | 2021/05/12 12:00 | Roi Ginat v Karlo Cubelic | 1-6,3-6 |
| ITF M15 Jerusalem | 2021/05/11 06:30 | Karlo Cubelic v Charles Minc | 5-7,6-4,10-5 |
| ITF M15 Jerusalem | 2021/05/10 07:00 | Karlo Cubelic v Stefan Simeunovic | 6-1,6-1 |