Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Sintra | 2021/09/05 12:00 | Paulo A S Dos Santos v Illia Stoliar | 6-2,6-2 |
| ITF - M25 Setubal | 2021/10/05 12:15 | Goncalo Falcao v Illia Stoliar | 4-6,6-4,6-10 |
| ITF - M25 Setubal | 2021/10/04 12:10 | Price, Cameron v Illia Stoliar | 1-6,1-6 |
| ITF M25 Sintra | 2021/09/13 16:20 | Mirko Lagasio v Illia Stoliar | 6-4,6-4 |
| ITF M25 Sintra | 2021/09/05 12:00 | Paulo A S Dos Santos v Illia Stoliar | 6-2,6-2 |
| ITF M15 Castelo Branco | 2021/07/25 16:00 | Illia Stoliar v Rodeia, Andre | 7-6,5-7,6-10 |
| ITF M25 Idanha-A-Nova | 2021/07/19 12:50 | Illia Stoliar v Daniel Little | 2-6,4-6 |
| ITF M25 Idanha-A-Nova | 2021/07/18 13:00 | Andre Stewart v Illia Stoliar | 5-7,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/13 10:25 | Rodrigues, Daniel v Illia Stoliar | 2-6,6-4,11-9 |
| ITF - M25 Setubal | 2021/10/05 11:20 | Alberto Morolli v Paulo A S Dos Santos | 6-4,1-6,6-10 |
| ITF - M25 Setubal | 2021/10/04 10:00 | Simoes, Martim v Paulo A S Dos Santos | 2-6,6-4,8-10 |
| ITF M25 Sintra | 2021/09/06 13:30 | Paulo A S Dos Santos v Korsgaard, Henrik Heise | 7-5,5-7,6-10 |
| ITF M25 Sintra | 2021/09/05 12:00 | Paulo A S Dos Santos v Illia Stoliar | 6-2,6-2 |
| ITF M15 Oldenzaal | 2021/08/15 07:30 | Jans, Jarno v Paulo A S Dos Santos | 7-5,6-1 |
| ITF M15 Xativa | 2021/08/01 13:00 | Paulo A S Dos Santos v Alexis Boureau | 2-6,3-6 |
| ITF M15 Castelo Branco | 2021/07/26 08:30 | Clement Chidekh v Paulo A S Dos Santos | 7-6,6-1 |
| ITF M15 Cordoba | 2021/04/07 13:30 | Paulo A S Dos Santos v Lucio Carnevalle | 1-6,2-6 |