Stadium: Court 7 Round: 25 Ground: Clay
| ITF Greece F10 | 2015/11/05 07:30 | Kalovelonis, Markos v Khomentovskiy, Matvey | 7-6,6-7,1-6 |
| Coupe Davis | 2018/04/06 10:15 | Celebic, Ljubomir v Kalovelonis, Markos | 6-2,6-1 |
| Coupe Davis | 2018/04/04 09:10 | Podzus, Martins v Kalovelonis, Markos | 3-6,4-6 |
| ITF Greece F5 | 2018/03/28 06:00 | Kalovelonis, Markos v Stergiou, Ioannis | 3-6,2-6 |
| ITF Greece F4 | 2018/03/23 14:00 | Kalovelonis, Markos v Crepatte, Baptiste | 3-6,2-6 |
| ITF Greece F4 | 2018/03/23 09:40 | Lukas Klein v Kalovelonis, Markos | 6-7,3-6 |
| ITF Greece F4 | 2018/03/20 10:20 | Kalovelonis, Markos v Zgombic, Fran Zvonimir | 6-4,6-4 |
| ITF Greece F3 | 2018/03/15 13:05 | Baldi, Filippo v Kalovelonis, Markos | 6-3,6-3 |
| ITF Greece F3 | 2018/03/14 08:00 | Kalovelonis, Markos v Brenner, Alex | 6-2,6-2 |
| ITF Kazakhstan F4 Qual | 2018/04/16 10:30 | Khomentovskiy, Matvey v Terzyan, Rafik | 6-4,6-1 |
| ITF Kazakhstan F4 Qual | 2018/04/15 07:55 | Khomentovskiy, Matvey v Bruandet, Loick | 6-2,6-2 |
| ITF Kazakhstan F3 | 2018/04/11 04:00 | Tyurnev, Evgeny v Khomentovskiy, Matvey | 6-2,6-7,6-4 |
| ITF Kazakhstan F3 | 2018/04/10 08:30 | Khomentovskiy, Matvey v Tsoy, Pavel | 6-0,6-3 |
| ITF Kazakhstan F3 Qual | 2018/04/09 05:00 | Khomentovskiy, Matvey v Imanol L Morillo | 6-3,6-4 |
| ITF Kazakhstan F3 Qual | 2018/04/08 13:00 | Khomentovskiy, Matvey v Bakhodur, Fariduni | 6-1,6-1 |
| ITF Russia F3 | 2018/03/12 07:00 | Khomentovskiy, Matvey v Alexey Zakharov | 4-6,3-6 |
| ITF Russia F2 | 2018/03/03 11:30 | Khomentovskiy, Matvey v Grigoriy Lomakin | 5-7,6-1,2-6 |