Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Nur-Sultan | 2021/07/05 04:50 | Kalkenov, Tamerlan v Nelich, Andrey | 2-6,5-7 |
| ITF M25 Nur-Sultan | 2021/07/05 04:50 | Kalkenov, Tamerlan v Nelich, Andrey | 2-6,5-7 |
| ITF - M15 Antalya | 2019/11/17 11:00 | Filip Krolo v Kalkenov, Tamerlan | 6-0,6-0 |
| ITF - M15 Antalya | 2019/11/10 06:30 | Kalkenov, Tamerlan v Ivanov, Vladislav | 0-6,0-6 |
| ITF - M15 Antalya | 2019/11/03 06:30 | Kalkenov, Tamerlan v Soyler, Osmancan | 2-6,0-6 |
| ITF Kazakhstan F4 Qual | 2018/04/14 09:15 | Fukuoka, Yusei v Kalkenov, Tamerlan | 6-1,6-1 |
| Turkey F16, Singles Qualifying | 2017/04/22 09:00 | Laelson Rodrigues v Kalkenov, Tamerlan | 7-5,6-0 |
| ITF Tunisia F12 | 2017/03/25 08:30 | Kalkenov, Tamerlan v Assuncao Garla, Felipe | 0-6,0-6 |
| Turkey F16, Singles Qualifying | 2016/04/17 09:00 | Wojcik, Jakub v Kalkenov, Tamerlan | 6-1,6-0 |
| ITF M25 Nur-Sultan | 2021/07/06 04:00 | Urinov, Ibrokhimjon v Nelich, Andrey | 4-6,6-1,10-4 |
| ITF M25 Nur-Sultan | 2021/07/05 04:50 | Kalkenov, Tamerlan v Nelich, Andrey | 2-6,5-7 |
| ITF - M15 Shymkent | 2021/04/12 08:40 | Jack Gibbens v Nelich, Andrey | 6-1,6-2 |
| ITF - M15 Shymkent | 2021/04/05 09:10 | Nelich, Andrey v Aleksandr Braynin | 1-6,0-6 |