Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2021/03/28 16:00 | Inaki Cabrera Bello v Karlo Cubelic | 1-6,5-7 |
| ITF M15 Sharm El Sheikh | 2021/03/30 08:40 | Mattia Bellucci v Karlo Cubelic | 6-2,6-2 |
| ITF M15 Sharm El Sheikh | 2021/03/29 13:00 | Jack Gibbens v Karlo Cubelic | 3-6,4-6 |
| ITF M15 Sharm El Sheikh | 2021/03/28 16:00 | Inaki Cabrera Bello v Karlo Cubelic | 1-6,5-7 |
| ITF M15 Sharm El Sheikh | 2021/03/24 11:55 | Oscar Jose Gutierrez v Karlo Cubelic | 4-6,6-3,7-6 |
| ITF M15 Sharm El Sheikh | 2021/03/23 11:35 | Petr Hajek v Karlo Cubelic | 7-6,6-2 |
| ITF M15 Sharm El Sheikh | 2021/03/22 13:00 | Toby D. Boyer v Karlo Cubelic | 1-6,4-6 |
| ITF M15 Sharm El Sheikh | 2021/02/17 07:30 | Karlo Cubelic v Martins Podzus | 6-4,1-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/02/16 10:55 | Luca Potenza v Karlo Cubelic | 6-7,3-6 |
| ITF M15 Sharm El Sheikh | 2021/03/28 16:00 | Inaki Cabrera Bello v Karlo Cubelic | 1-6,5-7 |
| ITF M25 La Nucia | 2021/03/14 14:00 | Yan Bondarevskiy v Inaki Cabrera Bello | 6-2,6-4 |
| ITF M15 La Nucia | 2021/03/09 09:00 | Andrey Chepelev v Inaki Cabrera Bello | 7-6,6-3 |
| ITF M15 La Nucia | 2021/03/08 10:00 | Pablo Alemany v Inaki Cabrera Bello | 6-7,3-6 |
| ITF M25 Faro | 2021/02/28 14:00 | Ugo Blanchet v Inaki Cabrera Bello | 6-0,6-1 |
| ITF M25 Vale Do Lobo | 2021/02/23 12:00 | Bradley Paliska v Inaki Cabrera Bello | 6-3,6-7,13-11 |
| ITF M25 Vale Do Lobo | 2021/02/22 13:00 | Inaki Cabrera Bello v Mayeul Darras | 7-5,7-5 |
| UTR Pro Tennis Series Barcelona | 2021/01/30 08:00 | Kuzey Cekirge v Inaki Cabrera Bello | 7-5,6-3 |