Stadion: Court 2 Round: 26 Ground: Hardcourt indoor
| ITF - M15 - Antalya | 2019/04/17 14:15 | Maxim Ratniuk v Patrik Niklas-Salminen | 4-6,2-6 |
| ITF - M15 - Pajulahti | 2019/09/18 07:30 | Maxim Ratniuk v Daniil Glinka | 7-6,6-7,6-4 |
| ITF - M25 - Ust-Kamenogorsk | 2019/08/30 07:15 | Bogdan Bobrov v Maxim Ratniuk | 6-2,6-3 |
| ITF - M25 - Ust-Kamenogorsk | 2019/08/29 08:25 | Egor Noskin v Maxim Ratniuk | 4-6,6-4,1-6 |
| ITF - M25 - Ust-Kamenogorsk | 2019/08/28 07:15 | Sharobiddin Abzalov v Maxim Ratniuk | 4-6,5-7 |
| ITF - M15 - Moskau | 2019/08/20 09:00 | Alexander Zhurbin v Maxim Ratniuk | 7-6,1-6,6-3 |
| ITF - M15 - Moskau | 2019/08/15 11:30 | Bogdan Bobrov v Maxim Ratniuk | 6-1,6-2 |
| ITF - M15 - Moskau | 2019/08/13 13:00 | Maxim Ratniuk v Markos Kalovelonis | 6-1,7-6 |
| ITF - M15 - Parnu | 2019/07/18 12:25 | Luigi Sorrentino v Maxim Ratniuk | 6-2,7-6 |
| ITF - M15 - Pajulahti | 2019/09/18 11:05 | Jeremy Schifris v Patrik Niklas-Salminen | 1-6,4-6 |
| Davis Cup | 2019/09/13 15:00 | Patrik Niklas-Salminen v Dominic Thiem | 3-6,4-6 |
| ITF - M15 - Sao Bras Alportel | 2019/09/05 10:35 | Anton Matusevich v Patrik Niklas-Salminen | 6-4,6-2 |
| ITF - M15 - Sao Bras Alportel | 2019/09/03 14:30 | Guido Ivan Justo v Patrik Niklas-Salminen | 1-6,3-6 |
| ITF - M15 - Helsinki | 2019/08/25 09:00 | Juan Manuel Cerundolo v Patrik Niklas-Salminen | 6-2,6-3 |
| ITF - M15 - Helsinki | 2019/08/24 10:00 | Jose Fco. Vidal Azorin v Patrik Niklas-Salminen | 5-7,4-6 |
| ITF - M15 - Helsinki | 2019/08/23 10:40 | Vladimir Ivanov v Patrik Niklas-Salminen | 4-6,7-5,2-6 |
| ITF - M15 - Helsinki | 2019/08/22 10:00 | Alex M Pujolras v Patrik Niklas-Salminen | 3-6,2-6 |