Stadium: COURT 7 Round: 45 Ground: Hardcourt indoor
| ITF Estonia F2 | 2018/10/31 10:50 | Karl Kiur Saar v Maxim Ratniuk | 7-5,6-1 |
| ITF M25 Kazan | 2019/03/11 09:30 | Maxim Ratniuk v Ivan Mikhaylyuk | 6-3,6-1 |
| ITF M15 - Sharm El Sheikh | 2019/02/27 11:35 | Maxim Ratniuk v Marko Miladinovic | 6-7,2-6 |
| ITF M15 - Sharm El Sheikh | 2019/02/18 07:30 | Maxim Ratniuk v Martin Van Der Meerschen | 3-6,4-6 |
| ITF M25 Kazan | 2019/01/25 09:10 | Maxim Ratniuk v Teymuraz Gabashvili | 4-6,3-6 |
| ITF M25 Kazan | 2019/01/24 10:05 | Maxim Ratniuk v Matvey Minin | 6-3,2-6,7-6 |
| ITF M25 Kazan | 2019/01/22 11:05 | Ben Patael v Maxim Ratniuk | 1-6,3-6 |
| ITF M15 - Monastir | 2019/01/17 08:00 | Maxim Ratniuk v Altug Celikbilek | 3-6,2-6 |
| ITF M15 - Monastir | 2019/01/15 08:00 | Maxim Ratniuk v Jonathan Gray | 6-1,6-3 |
| ITF M25 Kazan | 2019/03/11 10:45 | Dmitry Myagkov v Karl Kiur Saar | 2-6,3-6 |
| ITF M15 Oslo | 2019/03/04 09:00 | Karl Kiur Saar v Marcus Mansson | 6-7,6-4,9-11 |
| ITF Finland F4 | 2018/11/13 11:00 | Karl Kiur Saar v Louis Wessels | 3-6,6-7 |
| ITF Finland F4 | 2018/11/11 10:30 | Karl Kiur Saar v Johannes Seeman | 6-4,6-2 |
| ITF Finland F4 | 2018/11/10 11:35 | Karl Kiur Saar v Jason Sormunen | 6-2,6-4 |
| ITF Estonia F3 | 2018/11/07 10:25 | Karl Kiur Saar v Joshua Paris | 3-6,7-6,4-6 |
| ITF Estonia F3 | 2018/11/06 14:30 | Christoffer Solberg v Karl Kiur Saar | 6-7,4-6 |
| ITF Estonia F2 | 2018/11/01 12:00 | Vladimir Ivanov v Karl Kiur Saar | 6-1,6-3 |