Stadium: Court 6 Round: 26 Ground: Hardcourt indoor
| ITF Kazakhstan F2 | 2016/01/30 06:00 | Sergey Betov v Markos Kalovelonis | 6-3,6-4 |
| ITF M25 Kazan | 2019/01/23 10:10 | Sergey Betov v Vladimir Ivanov | 6-3,6-0 |
| ITF Finland F4 | 2018/11/13 14:15 | Sergey Betov v Maxime Pauwels | 4-6,4-6 |
| ITF Estonia F3 | 2018/11/09 14:00 | Vladyslav Manafov v Sergey Betov | 6-2,6-2 |
| ITF Estonia F3 | 2018/11/08 12:05 | Alexander Vasilenko v Sergey Betov | 2-6,2-6 |
| ITF Estonia F3 | 2018/11/07 13:25 | Remy Bertola v Sergey Betov | 3-6,7-6,6-7 |
| ITF Estonia F3 | 2018/11/05 09:00 | Matvey Khomentovskiy v Sergey Betov | 4-6,2-6 |
| Challenger Shenzhen 2 | 2018/10/27 04:35 | Haitong Xia v Sergey Betov | 7-6,5-7,6-1 |
| Challenger Liuzhou | 2018/10/20 03:50 | Sergey Betov v Emil Ruusuvuori | 2-6,3-6 |
| ITF M25 Kazan | 2019/01/22 13:45 | Markos Kalovelonis v Sergey Bolotov | 6-2,3-6,6-1 |
| ITF Turkey F41 | 2018/12/21 08:45 | Markos Kalovelonis v Oriol Roca Batalla | 1-6,4-6 |
| ITF Turkey F41 | 2018/12/21 06:00 | Markos Kalovelonis v Alexandru Vasile Manole | 6-3,6-3 |
| ITF Turkey F41 | 2018/12/20 10:20 | Markos Kalovelonis v Mohamed Abdel-Aziz | 7-5,6-1 |
| ITF Turkey F41 | 2018/12/19 10:30 | Markos Kalovelonis v Mohamed Abdel-Aziz | 7-5,5-1 |
| ITF Greece F8 | 2018/11/16 08:00 | Michail Pervolarakis v Markos Kalovelonis | 6-4,6-3 |
| ITF Greece F8 | 2018/11/15 08:00 | Hasan Ibrahim v Markos Kalovelonis | 6-7,2-6 |
| ITF Greece F8 | 2018/11/13 09:00 | Pedro Vives Marcos v Markos Kalovelonis | 2-6,7-6,4-6 |