Stadium: Court 3 Round: 44 Ground: Clay
| UTR Pro Tennis Series California | 2021/07/30 16:30 | Ewen Lumsden v Alexey Nesterov | 1-6,7-6,7-5 |
| UTR Pro Tennis Series California | 2021/07/28 18:00 | Alexey Nesterov v John B D Otico | 6-2,5-1 |
| UTR Pro Tennis Series California | 2021/07/27 16:30 | Alexey Nesterov v Aditya Gupta | 7-6,6-1 |
| UTR Pro Tennis Series California | 2021/07/26 16:30 | Ethan Quinn v Alexey Nesterov | 6-7,7-5,6-2 |
| UTR Pro Tennis Series California | 2021/07/25 15:00 | Ewen Lumsden v Alexey Nesterov | 0-0 |
| UTR Pro Tennis Series California | 2021/07/24 15:00 | Alexey Nesterov v Welsh Hotard | 6-1,5-1 |
| UTR Pro Tennis Series California | 2021/07/22 16:30 | Luke Vandecasteele v Alexey Nesterov | 6-4,4-6,0-5 |
| UTR Pro Tennis Series California | 2021/07/21 16:30 | Alexey Nesterov v Aryan Chaudhary | 6-1,0-0 |
| ITF M15 Porec | 2021/03/07 11:30 | Borna Devald v Julian Onken | 7-5,6-2 |
| German Championship | 2020/12/07 15:00 | Michael Weindl v Julian Onken | 6-2,5-2 |
| ITF M15 Irpin | 2019/08/12 07:00 | Julian Onken v Igor Karpovets | 6-3,4-6,5-10 |
| ITF M15 Eupen | 2019/08/06 08:00 | Daniel De Jonge v Julian Onken | 6-2,7-6 |
| ITF M15 Eupen | 2019/08/05 09:00 | Julian Onken v Shunsuke Wakita | 6-0,6-2 |
| ITF Germany F16 | 2018/10/23 10:30 | Leopold Zima v Julian Onken | 4-6,6-3,6-2 |
| ITF Belgium F9 | 2018/08/21 12:30 | Julian Onken v Louis Herman | 4-6,6-3,2-6 |
| ITF Germany F9 | 2018/07/22 16:30 | Julian Onken v Maik Steiner | 2-6,6-2,4-6 |