Stadium: Center Round: 26 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2020/11/25 07:30 | Markos Kalovelonis v Lucas Gerch | 2-6,2-6 |
| ITF M15 Heraklion | 2020/11/18 07:30 | Evan Furness v Markos Kalovelonis | 6-3,6-4 |
| ITF M15 Heraklion | 2020/11/12 11:00 | Luke Johnson v Markos Kalovelonis | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2020/10/18 09:00 | Viacheslav Bielinskyi v Markos Kalovelonis | 4-6,7-6,10-8 |
| ITF M15 Sharm El Sheikh | 2020/10/12 09:00 | Markos Kalovelonis v Omni Kumar | 2-6,5-7 |
| ITF M15 Sharm El Sheikh | 2020/10/11 11:00 | Markos Kalovelonis v Sabit Suntic | 6-4,6-2 |
| ITF M15 Sharm El Sheikh | 2020/10/06 08:00 | Markos Kalovelonis v Daniele Capecchi | 1-6,3-6 |
| ITF M15 Heraklion | 2020/02/27 11:05 | Jordan Correia v Markos Kalovelonis | 7-5,6-0 |
| Challenger Potchefstroom | 2021/02/15 08:00 | Lucas Miedler v Benjamin Lock | 6-7,7-5,6-2 |
| Challenger Potchefstroom Qual | 2021/02/14 10:10 | Benjamin Lock v Vaclav Safranek | 7-6,6-4 |
| Challenger Potchefstroom | 2021/02/07 12:30 | Benjamin Lock v Vaclav Safranek | 4-6,3-6 |
| UTR Pro Tennis Series Florida | 2021/01/24 17:45 | Jordi Arconada v Benjamin Lock | 6-3,3-6,4-5 |
| UTR Pro Tennis Series Florida | 2021/01/23 18:30 | Benjamin Lock v Sekou Bangoura | 7-6,6-2 |
| UTR Pro Tennis Series Florida | 2021/01/21 17:00 | Benjamin Lock v Tommaso Carnevale-Miino | 6-1,6-3 |
| UTR Pro Tennis Series Florida | 2021/01/20 20:00 | Benjamin Lock v Ronan Jachuck | 1-6,4-5 |
| UTR Pro Tennis Series Florida | 2021/01/19 15:30 | Benjamin Lock v JC Aragone | 3-6,4-5 |