Stadium: Court Limak Enerji Round: 54
| ITF Germany F6 | 2016/07/06 16:20 | Sieber, Marc v Vadym Ursu | 7-5,0-6,7-5 |
| Challenger Istanbul Qual | 2017/09/09 11:20 | Sieber, Marc v Griekspoor, Kevin | 6-2,6-3 |
| ITF Turkey F32 | 2017/09/01 11:00 | Wilson Leite v Sieber, Marc | 3-6,2-6 |
| ITF Turkey F32 | 2017/08/31 12:00 | Felipe Meligeni Rodrigues Alves v Sieber, Marc | 3-6,5-7 |
| ITF Turkey F32 | 2017/08/30 12:00 | Rieder, Horst v Sieber, Marc | 1-6,1-6 |
| ITF Germany F12 | 2017/08/25 15:10 | Sieber, Marc v Louis Wessels | 6-3,3-6,4-6 |
| ITF Germany F12 | 2017/08/24 10:15 | Sieber, Marc v Schmidt, Gabriel | 6-3,6-4 |
| ITF Germany F12 | 2017/08/23 15:00 | Sieber, Marc v Link, Joel Vincent | 6-4,6-1 |
| Challenger Meerbusch | 2017/08/17 11:00 | Sieber, Marc v Karim-Mohamed Maamoun | 2-6,3-6 |
| Challenger Istanbul Qual | 2017/09/09 07:00 | Sarp Agabigun v Vadym Ursu | 6-4,1-6,2-6 |
| ITF Belarus F3 | 2017/08/22 08:10 | Manafov, Vladyslav v Vadym Ursu | 7-5,6-1 |
| ITF Belarus F2 | 2017/08/17 07:00 | Shyla, Yaraslau v Vadym Ursu | 6-3,6-4 |
| ITF Belarus F2 | 2017/08/16 08:35 | Matsukevitch, Denis v Vadym Ursu | 4-6,6-3,6-7 |
| ITF Belarus F2 | 2017/08/14 07:00 | Vadym Ursu v Hugo Grenier | 6-2,6-3 |
| Challenger Segovia Qual | 2017/07/30 12:10 | Vadym Ursu v Lescure, Mick | 3-6,3-6 |
| Challenger Segovia Qual | 2017/07/29 13:05 | Gutierrez Medina, Alvar v Vadym Ursu | 3-6,3-6 |
| ITF Spain F23 | 2017/07/25 08:35 | Vadym Ursu v Giner, Marc | 4-6,3-6 |