Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF - M25 Quinta do Lago | 2021/10/18 12:00 | Michael Zhu v Hillel Rousseau | 4-6,6-3,3-10 |
| ITF - M25 Quinta do Lago | 2021/10/17 15:00 | Michael Zhu v Tim Loosen | 6-3,6-1 |
| ITF - M15 Cancun | 2021/09/30 19:35 | Michael Zhu v Dusty H. Boyer | 6-1,5-7,4-6 |
| ITF - M15 Cancun | 2021/09/28 17:00 | Michael Zhu v Siddhant Banthia | 6-4,6-3 |
| ITF - M15 Cancun | 2021/09/23 19:00 | Michael Zhu v Miles Jones | 6-2,2-6,3-6 |
| ITF - M15 Cancun | 2021/09/22 19:10 | Michael Zhu v Toby D. Boyer | 7-5,6-4 |
| ITF - M15 Monastir | 2021/09/16 08:00 | Michael Zhu v Li Tu | 3-6,2-6 |
| ITF - M15 Monastir | 2021/09/14 09:00 | Michael Zhu v Matas Vasiliauskas | 7-5,6-2 |
| ITF - M25 Portimao | 2021/10/24 13:00 | Afonso Portugal v Tomas Tenil | 6-0,6-1 |
| ITF - M25 Quinta do Lago | 2021/10/17 13:30 | Afonso Portugal v Amaury Raynel | 2-6,2-6 |
| ITF - M25 Loule | 2021/10/11 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,6-7 |
| ITF - M25 Loule | 2021/10/10 16:00 | Afonso Portugal v Pedro D L R Bueno | 6-1,6-3 |
| ITF - M25 Setubal | 2021/10/03 14:00 | Sergio Davila Godoy v Afonso Portugal | 6-1,6-2 |
| ITF - M25 Sintra | 2021/09/13 12:00 | Afonso Portugal v Alan F R Fierros | 2-6,2-6 |
| ITF - M15 Castelo Branco | 2021/07/26 11:00 | Afonso Portugal v Raphael Lambling | 3-6,1-6 |
| ITF - M15 Castelo Branco | 2021/07/25 08:00 | Afonso Portugal v Angel G Melgar | 6-1,3-6,10-6 |