| ITF M25 Telavi | 2021/07/30 06:00 | Marco De Rossi v Markos Kalovelonis | 6-3,6-3 |
| Challenger Nur-Sultan Qual | 2021/07/18 04:00 | Markos Kalovelonis v Sanjar Fayziev | 7-6,3-6,6-7 |
| ITF M25 Nur-Sultan | 2021/07/07 07:00 | Markos Kalovelonis v Lucas Catarina | 6-4,6-7,2-6 |
| ITF M15 Shymkent | 2021/06/03 07:25 | Vladyslav Manafov v Markos Kalovelonis | 6-1,3-6,6-3 |
| ITF M15 Shymkent | 2021/06/02 07:05 | Saba Purtseladze v Markos Kalovelonis | 0-6,3-6 |
| ITF M15 Shymkent | 2021/05/27 05:00 | Markos Kalovelonis v Ivan Liutarevich | 4-6,6-3,6-7 |
| ITF M15 Shymkent | 2021/05/26 04:00 | Vladyslav Manafov v Markos Kalovelonis | 2-6,6-3,3-6 |
| ITF M15 Tbilisi | 2021/05/20 06:00 | Markos Kalovelonis v Benjamin Lock | 4-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 12:30 | Jaume Pla Malfeito v Jay Friend | 6-1,6-7,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/05 07:00 | Jaume Pla Malfeito v Adria Soriano Barrera | 1-6,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/04 10:00 | Jaume Pla Malfeito v Francois Musitelli | 4-6,0-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/03 11:30 | Jaume Pla Malfeito v Alejandro Mendoza | 7-6,2-6,6-7 |
| UTR Pro Tennis Series Barcelona | 2021/08/02 08:30 | Jaume Pla Malfeito v Jordi Munoz-Abreu | 6-1,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/06/24 07:00 | Alejandro Garcia v Jaume Pla Malfeito | 7-5,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/06/22 08:00 | Jordi Mas De Ugarte v Jaume Pla Malfeito | 3-6,6-2,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/21 12:30 | Jose Joaquin M Cisneros v Jaume Pla Malfeito | 6-4,7-5 |