Stadium: Court 3 Round: 27 Ground: Clay
| ITF Egypt F9 | 2017/03/15 08:00 | Sieber, Marc v Smirnov, Artem | 3-6,3-6 |
| Turkey F16, Singles Qualifying | 2018/04/26 07:30 | Smirnov, Artem v Vitaliy Sachko | 6-4,6-3 |
| Turkey F16, Singles Qualifying | 2018/04/25 07:30 | Smirnov, Artem v Cammarata, Alberto | 6-3,6-4 |
| Coupe Davis | 2018/02/03 15:55 | Smirnov, Artem v Ymer, Mikael | 4-6,2-6 |
| Coupe Davis | 2018/02/02 17:10 | Smirnov, Artem v Elias Ymer | 2-6,3-6 |
| ITF Egypt F2 | 2018/01/28 08:00 | Aslan Karatsev v Smirnov, Artem | 6-3,6-2 |
| ITF Egypt F2 | 2018/01/27 09:55 | Smirnov, Artem v Enzo Couacaud | 7-6,6-7,7-6 |
| ITF Egypt F2 | 2018/01/26 08:00 | Marcora, Roberto v Smirnov, Artem | 7-5,2-6,5-7 |
| ITF Egypt F2 | 2018/01/25 08:00 | Mitjana, Leny v Smirnov, Artem | 3-6,3-6 |
| Turkey F16, Singles Qualifying | 2018/04/26 07:30 | Kiyamov, Timur v Sieber, Marc | 4-6,6-7 |
| Turkey F16, Singles Qualifying | 2018/04/24 09:00 | Boborykin, Alexander v Sieber, Marc | 4-6,1-6 |
| Turkey F15, Singles Qualifying | 2018/04/17 08:00 | Paul Woerner v Sieber, Marc | 6-2,6-3 |
| Turkey F14, Singles Qualifying | 2018/04/13 07:30 | Pospisil, Jaroslav v Sieber, Marc | 6-2,6-4 |
| Turkey F14, Singles Qualifying | 2018/04/12 09:35 | Jordan Correia Passos Do Carmo v Sieber, Marc | 4-6,6-4,1-6 |
| ITF Portugal F5 | 2018/03/21 17:15 | Monteiro, Joao v Sieber, Marc | 5-7,6-3,6-2 |
| Portugal F4, Singles Qualifying | 2018/03/14 11:40 | Sieber, Marc v Alejandro Davidovich Fokina | 3-6,3-6 |
| Portugal F4, Singles Qualifying | 2018/03/13 12:25 | Sieber, Marc v Yann Marti | 6-2,0-6,6-1 |