| Puchar Davisa | 2021/06/18 09:30 | Aleksandre Metreveli v Petros Chrysochos | 2-6,2-6 |
| Puchar Davisa | 2021/06/17 09:30 | Petros Chrysochos v Egill Sigurdsson | 6-1,6-0 |
| ITF - Heraklion M15 | 2021/05/25 08:00 | Mark Whitehouse v Petros Chrysochos | 5-7,4-6 |
| ITF - Heraklion M15 | 2021/05/22 06:30 | Ryan Peniston v Petros Chrysochos | 6-4,5-7,6-4 |
| ITF - Heraklion M15 | 2021/05/21 06:30 | Dusty H. Boyer v Petros Chrysochos | 1-6,3-6 |
| ITF - Heraklion M15 | 2021/05/20 09:25 | Alexis Musialek v Petros Chrysochos | 3-6,6-3,2-6 |
| ITF - Heraklion M15 | 2021/05/19 11:50 | Jason Janis v Petros Chrysochos | 2-6,3-6 |
| ITF - Sharm El Sheikh M15 | 2021/04/04 07:30 | Mattia Bellucci v Petros Chrysochos | 0-6,2-6 |
| Puchar Davisa | 2021/06/17 09:30 | Lucas Catarina v Simon Carr | 4-6,4-6 |
| Puchar Davisa | 2021/06/16 09:05 | Lucas Catarina v Liam Delicata | 6-0,6-1 |
| ITF - Helsinki M15 | 2021/06/05 07:00 | Lucas Catarina v Lilian Marmousez | 3-6,3-6 |
| ITF - Helsinki M15 | 2021/06/04 07:00 | Lucas Catarina v Clement Tabur | 4-6,7-5,6-3 |
| ITF - Helsinki M15 | 2021/06/03 08:50 | Lucas Catarina v Andrea Del Federico | 6-0,6-2 |
| ITF - Helsinki M15 | 2021/06/02 06:30 | Lucas Catarina v Vladimir Ivanov | 7-5,1-6,6-2 |
| Challenger Oeiras | 2021/05/24 10:00 | Lucas Catarina v Nikolas Sanchez Izquierdo | 4-6,2-6 |
| Challenger Oeiras | 2021/05/23 10:00 | Lucas Catarina v Ronald Slobodchikov | 6-1,6-3 |