Stadium: Center Court Round: 25 Ground: Clay
| ITF Finland F4 | 2017/11/14 19:55 | Patrik Niklas-Salminen v Matteo Viola | 6-4,3-6,7-5 |
| Challenger Nur-Sultan | 2019/07/19 05:00 | Matteo Viola v Sebastian Korda | 4-6,5-7 |
| Challenger Nur-Sultan | 2019/07/18 05:00 | Aleksandr Nedovyesov v Matteo Viola | 6-7,4-6 |
| Challenger Nur-Sultan | 2019/07/17 09:40 | Sidharth Rawat v Matteo Viola | 1-6,6-2,1-6 |
| Challenger Recanati | 2019/07/04 08:00 | Ramkumar Ramanathan v Matteo Viola | 6-4,6-1 |
| Challenger Recanati | 2019/07/03 08:00 | Matteo Viola v Ilya Ivashka | 6-4,5-7,6-4 |
| Challenger Recanati | 2019/07/01 17:15 | Matteo Viola v Emiliano Maggioli | 6-3,7-6 |
| ATP Stuttgart | 2019/06/09 11:05 | Matteo Viola v Alexei Popyrin | 3-6,5-7 |
| Challenger Vicenza | 2019/05/30 07:30 | Matteo Viola v Mats Moraing | 4-6,1-6 |
| Challenger Tampere | 2019/07/23 15:15 | Alessandro Bega v Patrik Niklas-Salminen | 6-4,6-7,6-7 |
| ITF M15 Vilnius | 2019/07/09 10:30 | Bogdan Bobrov v Patrik Niklas-Salminen | 6-7,6-2,6-2 |
| ITF M25 Martos | 2019/06/20 13:00 | Eduardo Struvay v Patrik Niklas-Salminen | 7-6,7-6 |
| ITF M25 Martos | 2019/06/19 18:15 | Jaume Pla Malfeito v Patrik Niklas-Salminen | 6-7,4-6 |
| ITF M25 Gyula | 2019/05/30 13:40 | Patrik Niklas-Salminen v Danylo Kalenichenko | 3-6,1-6 |
| ITF M25 Gyula | 2019/05/29 10:10 | Patrik Niklas-Salminen v Dusan Obradovic | 6-3,7-5 |
| ITF M15 Kalmar | 2019/05/15 11:00 | Adil Kalyanpur v Patrik Niklas-Salminen | 3-6,7-6,6-2 |
| ITF M15 Karlskrona | 2019/05/11 08:15 | Ronald Slobodchikov v Patrik Niklas-Salminen | 7-6,6-4 |