Stadium: Court 1 Round: 46 Ground: Clay
| Challenger Sibiu | 2017/09/19 08:00 | Roberto Carballes Baena v Lazov, Alexander | 6-3,6-4 |
| Challenger Sibiu Qual | 2017/09/18 07:00 | Lazov, Alexander v Kalenichenko, Danylo | 6-1,6-1 |
| Challenger Sibiu Qual | 2017/09/17 07:00 | Lazov, Alexander v Manda, Calin | 6-4,6-3 |
| Challenger Alphen Qual | 2017/09/04 11:15 | Cagnina, Julien v Lazov, Alexander | 5-7,7-6,6-3 |
| Challenger Alphen Qual | 2017/09/03 13:45 | Fallert, Florian v Lazov, Alexander | 5-7,3-6 |
| ITF Switzerland F4 | 2017/08/25 13:40 | Lazov, Alexander v Puetz, Tim | 6-7,6-7 |
| ITF Switzerland F4 | 2017/08/24 10:45 | Lazov, Alexander v Simon, Tobias | 6-4,7-6 |
| ITF Switzerland F4 | 2017/08/23 09:30 | Lazov, Alexander v Thomas Setodji | 4-6,6-4,6-1 |
| Challenger Almaty Qual | 2017/09/30 07:10 | Shcherba, Vitalii v Betov, Sergey | 4-6,0-6 |
| ITF Kazakhstan F7 | 2017/09/27 07:35 | Balazs, Attila v Betov, Sergey | 7-5,6-1 |
| ITF Kazakhstan F7 | 2017/09/25 07:25 | Betov, Sergey v Tashbulatov, Dostanbek | 6-1,6-3 |
| Kazakhstan F6, Singles | 2017/09/19 08:00 | Betov, Sergey v Ivanov, Vladimir | 5-7,1-6 |
| ITF Belarus F3 | 2017/08/22 10:25 | Filin, Pavel v Betov, Sergey | 6-4,3-6,7-6 |
| ITF Belarus F2 | 2017/08/15 08:45 | Betov, Sergey v Manafov, Vladyslav | 4-6,2-6 |
| Jinan, China | 2017/08/08 02:00 | Lu, Yen-Hsun v Betov, Sergey | 6-2,6-3 |
| Challenger Jinan Qual | 2017/08/05 02:30 | Sidharth Rawat v Betov, Sergey | 2-6,6-3,6-3 |