Stadium: Court 2 Round: 26 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 Quinta Do Lago | 2021/10/19 12:50 | Naoki Nakagawa v Petros Chrysochos | 7-6,6-1 |
| ITF M25 Loule | 2021/10/14 13:55 | Petros Chrysochos v Maximilian Neuchrist | 6-4,3-6,5-7 |
| ITF M25 Loule | 2021/10/13 14:20 | Petros Chrysochos v Pawel Juszczak | 7-5,6-3 |
| ITF M25 Setubal | 2021/10/08 10:30 | Rinky Hijikata v Petros Chrysochos | 6-3,6-2 |
| ITF M25 Setubal | 2021/10/07 14:35 | Henrique Rocha v Petros Chrysochos | 7-6,4-6,3-6 |
| Challenger Como | 2021/08/31 09:05 | Federico Gaio v Petros Chrysochos | 6-1,3-6,6-3 |
| Challenger Como | 2021/08/30 09:00 | Petros Chrysochos v Alexey Vatutin | 1-6,6-3,6-4 |
| Challenger Como | 2021/08/29 10:00 | Alexander Ritschard v Petros Chrysochos | 6-3,4-6,5-7 |