Stadium: Court 9 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Doha | 2021/10/07 12:30 | Niklas-Salminen, Patrick v Tao Mu | 6-4,2-6,3-6 |
| ITF - M15 Doha | 2021/10/06 12:30 | Niklas-Salminen, Patrick v Senthilkumar, Muthu Aadhitiya | 6-2,7-6 |
| ITF M25 Falun | 2021/09/28 14:30 | Otto Virtanen v Niklas-Salminen, Patrick | 6-1,7-6 |
| ITF M25 Jonkoping | 2021/09/21 07:30 | Daniel Little v Niklas-Salminen, Patrick | 6-4,7-6 |
| Coupe Davis | 2021/09/18 12:55 | Niklas-Salminen, Patrick v Gunneswaran, Prajnesh | 3-6,5-7 |
| Challenger Warsaw | 2021/08/22 09:00 | Heyman, Christopher v Niklas-Salminen, Patrick | 6-1,6-3 |
| ITF M15 Bratislava | 2021/08/17 13:40 | Minin, Matvey v Niklas-Salminen, Patrick | 6-1,7-6 |
| ITF M15 Gdynia | 2021/08/10 14:10 | Musialek, Alexis v Niklas-Salminen, Patrick | 6-4,6-3 |
| ITF M25 Pretoria | 2021/09/29 10:35 | Beale, Jeremy v Cash, Julian | 6-4,6-2 |
| ITF M25 Johannesburg | 2021/09/22 08:30 | Cash, Julian v Alastair Gray | 3-6,3-6 |
| ITF M25 Johannesburg | 2021/09/21 07:00 | Cash, Julian v Friedler, Asaf | 6-0,6-3 |
| ITF M25 Johannesburg | 2021/09/20 08:20 | Cash, Julian v Yeshaya, Omer | 6-2,6-0 |
| ITF M25 Johannesburg Qual | 2021/09/19 07:00 | Cash, Julian v Lwazi Ngwenya | 6-3,6-1 |
| ITF M25 Johannesburg | 2021/09/15 07:55 | Cash, Julian v Alec Beckley | 4-6,6-7 |
| UK Pro League | 2021/08/29 10:00 | Cash, Julian v Patten, Henry | 6-4,6-4 |
| UK Pro League | 2021/08/28 10:00 | Cash, Julian v Billy Harris | 4-6,7-6,2-10 |