Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Loule | 2021/10/10 12:00 | Paulo Knippling v Keanu Elias Immler | 4-6,2-6 |
| ITF M25 Sintra | 2021/09/15 11:55 | Santiago Rodriguez Taverna v Paulo Knippling | 6-0,6-0 |
| ITF M25 Sintra | 2021/09/08 12:45 | Jesse Flores v Paulo Knippling | 6-1,6-1 |
| ITF M15 Oldenzaal | 2021/08/15 14:00 | Guy Den Heijer v Paulo Knippling | 6-3,6-4 |
| ITF M15 Monastir | 2021/07/26 09:00 | Drew Baird v Paulo Knippling | 6-1,6-3 |
| ITF M15 Antalya | 2021/05/30 07:30 | Paulo Knippling v Daniil Savelev | 3-6,1-6 |
| ITF M15 Troisdorf | 2021/05/10 12:30 | Dominik Boehler v Paulo Knippling | 6-0,6-2 |
| ITF M25 Vale Do Lobo | 2021/03/07 12:00 | Paulo Knippling v Angel G Melgar | 3-6,2-6 |
| ITF M25 Portimao | 2021/10/24 13:00 | Pedro D L R Bueno v Jaime Faria | 1-6,0-6 |
| ITF M25 Quinta Do Lago | 2021/10/17 12:00 | Fermin Calvo Barcelo v Jaime Faria | 7-6,6-7,10-8 |
| ITF M25 Loule | 2021/10/10 12:00 | Jaime Faria v Gian Luca Tanner | 2-6,4-6 |
| ITF M25 Setubal | 2021/10/07 10:00 | Rinky Hijikata v Jaime Faria | 6-2,6-1 |
| ITF M25 Setubal | 2021/10/05 14:20 | Miguel Gomes v Jaime Faria | 3-6,6-7 |
| Challenger Braga | 2021/09/19 10:25 | Jaime Faria v Sebastian Fanselow | 0-6,2-6 |
| ITF M25 Sintra | 2021/09/13 15:05 | Diego F Flores v Jaime Faria | 6-3,6-2 |
| ITF M25 Sintra | 2021/09/12 10:30 | Jaime Faria v Tomas Tenil | 6-2,6-2 |