Ground: Hardcourt outdoor
| Challenger Biella | 2021/05/18 10:20 | Tim Van Rijthoven v Omar Giacalone | 6-2,6-2 |
| Challenger Biella | 2021/05/17 08:00 | Mischa Zverev v Omar Giacalone | 6-7,2-6 |
| ITF M15 Troisdorf | 2021/05/09 08:00 | Omar Giacalone v Glenn Smits | 4-6,6-4,7-10 |
| ITF M15 Monastir | 2021/04/27 08:30 | Yunseong Chung v Omar Giacalone | 6-3,6-7,6-2 |
| ITF M15 Monastir | 2021/04/24 09:30 | Omar Giacalone v Christoph Negritu | 4-6,2-6 |
| ITF M15 Monastir | 2021/04/23 15:00 | Omar Giacalone v Laurynas Grigelis | 6-7,6-4,6-2 |
| ITF M15 Monastir | 2021/04/22 08:30 | Omar Giacalone v Alexander Donski | 3-6,6-2,6-3 |
| ITF M15 Monastir | 2021/04/15 08:30 | Eliakim Coulibaly v Omar Giacalone | 6-2,6-4 |