Stadium: COURT 1 Round: 25 Ground: Clay
| ITF Russia F5 | 2018/08/09 07:00 | Zhurbin, Alexander v Ratniuk, Maxim | 6-4,6-7,7-5 |
| ITF Russia F5 | 2018/08/08 07:30 | Boborykin, Alexander v Ratniuk, Maxim | 4-6,3-6 |
| ITF Russia F5 | 2018/08/06 10:40 | Mugtasimov, Ruslan v Ratniuk, Maxim | 2-6,1-6 |
| ITF Russia F4 | 2018/08/01 09:05 | Ratniuk, Maxim v Matsukevitch, Denis | 6-2,7-6 |
| ITF Russia F4 | 2018/07/31 08:55 | Khomentovskiy, Matvey v Ratniuk, Maxim | 4-6,2-6 |
| ITF Georgia F2 | 2018/07/20 06:00 | Ratniuk, Maxim v Koray Kirci | 2-6,3-6 |
| ITF Georgia F2 | 2018/07/19 06:00 | Georgii Kravchenko v Ratniuk, Maxim | 4-6,6-3,1-6 |
| ITF Georgia F2 | 2018/07/18 08:40 | Melnic, Vladislav v Ratniuk, Maxim | 1-6,2-6 |
| ITF Estonia F1 | 2018/07/21 07:00 | Kalovelonis, Markos v Madaras, Dragos Nicolae | 2-6,3-6 |
| ITF Estonia F1 | 2018/07/20 09:00 | Kalovelonis, Markos v Niklas-Salminen, Patrick | 6-4,7-5 |
| ITF Estonia F1 | 2018/07/19 09:00 | Emil Ruusuvuori v Kalovelonis, Markos | 6-7,5-7 |
| ITF Estonia F1 | 2018/07/18 08:00 | Siimar, Kristofer v Kalovelonis, Markos | 1-6,1-6 |
| ITF Estonia F1 | 2018/07/17 10:00 | Siim Troost v Kalovelonis, Markos | 5-7,5-7 |
| ITF USA F18 | 2018/06/29 18:05 | Kalovelonis, Markos v Gomez, Alejandro | 6-3,3-6,4-6 |
| ITF USA F18 | 2018/06/28 14:00 | Kalovelonis, Markos v Goetz, Ryan | 6-3,6-2 |
| ITF USA F18 | 2018/06/27 19:10 | Kalovelonis, Markos v Gamble, Luke Jacob | 7-6,6-2 |