Stadium: Court S. Tsitsipas Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Héraklion | 2020/11/18 07:30 | Evan Furness v Kalovelonis, Markos | 6-3,6-4 |
| ITF - M15 Héraklion | 2020/11/12 11:00 | Johnson, Luke v Kalovelonis, Markos | 6-3,6-3 |
| ITF - M15 Sharm El Sheikh | 2020/10/18 09:00 | Viacheslav Bielinskyi v Kalovelonis, Markos | 4-6,7-6,10-8 |
| ITF - M15 Sharm El Sheikh | 2020/10/12 09:00 | Kalovelonis, Markos v Omni Kumar | 2-6,5-7 |
| ITF - M15 Sharm El Sheikh | 2020/10/11 11:00 | Kalovelonis, Markos v Suntic, Sabit | 6-4,6-2 |
| ITF - M15 Sharm El Sheikh | 2020/10/06 08:00 | Kalovelonis, Markos v Capecchi, Daniele | 1-6,3-6 |
| ITF - M15 Héraklion | 2020/02/27 11:05 | Jordan Correia Passos Do Carmo v Kalovelonis, Markos | 7-5,6-0 |
| ITF - M15 Héraklion | 2020/02/26 11:25 | Kalovelonis, Markos v Keisidis, Christos | 5-7,6-4,6-4 |
| ITF - M15 Héraklion | 2020/11/19 09:35 | Lucas Gerch v Ivanovski, Kalin | 6-7,6-7 |
| ITF - M15 Héraklion | 2020/11/17 11:00 | Lucas Miedler v Lucas Gerch | 3-6,6-3,2-6 |
| ITF - M15 Héraklion | 2020/11/13 11:55 | Lucas Gerch v Evan Furness | 2-6,0-6 |
| ITF - M15 Héraklion | 2020/11/13 07:30 | Lucas Gerch v Facundo Diaz Acosta | 3-6,6-3,11-9 |
| ITF - M15 Héraklion | 2020/11/12 07:30 | Denis Yevseyev v Lucas Gerch | 7-5,5-7,2-6 |
| ITF - M15 Héraklion | 2020/11/06 09:00 | Forti, Francesco v Lucas Gerch | 6-2,6-1 |
| ITF - M15 Héraklion | 2020/11/05 10:05 | Lucas Gerch v Ignatik, Uladzimir | 5-7,6-3,6-4 |
| ITF - M15 Héraklion | 2020/11/04 10:10 | Rodrigues, Natan v Lucas Gerch | 6-7,1-6 |