Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Portimao | 2021/10/26 09:00 | Goncalo Falcao v Illia Stoliar | 6-4,6-2 |
| ITF M25 Portimao | 2021/10/25 10:50 | Goncalo Falcao v Vasco L Prata | 6-0,6-0 |
| ITF M25 Quinta Do Lago | 2021/10/18 10:25 | Goncalo Falcao v Miguel Gomes | 6-4,1-6,4-10 |
| ITF M25 Quinta Do Lago | 2021/10/17 10:00 | Goncalo Falcao v Paulo A S Dos Santos | 6-1,6-4 |
| ITF M25 Loule | 2021/10/13 12:00 | Goncalo Falcao v Kaichi Uchida | 6-4,3-6,3-6 |
| ITF M25 Loule | 2021/10/13 11:40 | Goncalo Falcao v Kaichi Uchida | 6-4,3-6,3-6 |
| ITF M25 Loule | 2021/10/12 11:10 | Goncalo Falcao v Raphael Calzi | 6-4,6-2 |
| ITF M25 Loule | 2021/10/11 12:00 | Goncalo Falcao v Nil Boixader Roca | 5-7,6-4,10-8 |
| ITF M25 Portimao | 2021/10/26 10:35 | Sid Donarski v Valentino De Pellegrin | 6-4,6-2 |
| ITF M25 Portimao | 2021/10/25 09:00 | Matthew Romios v Sid Donarski | 6-2,4-6,3-10 |
| ITF M25 Quinta Do Lago | 2021/10/20 12:00 | Skander Mansouri v Sid Donarski | 6-1,6-4 |
| ITF M25 Loule | 2021/10/11 15:30 | Amaury Raynel v Sid Donarski | 3-6,6-2,10-8 |
| ITF M25 Pensacola | 2021/05/17 17:30 | Patrick Kypson v Sid Donarski | 6-2,6-0 |
| ITF M15 Cancun | 2019/12/03 14:10 | David Volfson v Sid Donarski | 6-3,6-4 |
| ITF M15 Cancun | 2019/12/02 15:30 | Dan Martin v Sid Donarski | 4-6,7-5,10-5 |
| ITF M15 Cancun | 2019/12/01 20:30 | Emiliano Troche v Sid Donarski | 5-7,2-6 |