Stadium: Court 4 Round: 25 Ground: Clay
| Challenger Astana | 2018/07/20 06:30 | Aleksandr Nedovyesov v Sebastian Ofner | 5-7,6-1,1-6 |
| Challenger Astana | 2018/07/19 06:30 | Aleksandr Nedovyesov v Arjun Kadhe | 6-3,6-7,6-4 |
| Challenger Astana | 2018/07/17 12:15 | Ivan Nedelko v Aleksandr Nedovyesov | 6-7,7-5,3-6 |
| Challenger Perugia Qual | 2018/07/09 09:20 | Aleksandr Nedovyesov v Riccardo Balzerani | 6-4,4-6,4-6 |
| Challenger Perugia Qual | 2018/07/08 14:25 | Aleksandr Nedovyesov v Riccardo Bonadio | 6-2,1-6,6-2 |
| ATP Antalya Qual | 2018/06/24 11:00 | Blaz Kavcic v Aleksandr Nedovyesov | 3-6,6-3,6-3 |
| ATP Antalya Qual | 2018/06/23 15:15 | Koray Kirci v Aleksandr Nedovyesov | 4-6,2-6 |
| Challenger Fergana | 2018/06/19 05:00 | Aleksandr Nedovyesov v Yosuke Watanuki | 4-6,6-7 |
| Challenger Prague Qual | 2018/07/23 10:10 | Peter Torebko v Marc Sieber | 1-6,4-6 |
| Challenger Prague Qual | 2018/07/22 14:10 | Dominik Kellovsky v Marc Sieber | 3-6,6-7 |
| Challenger Prague | 2018/07/21 14:05 | Mathieu Perchicot v Marc Sieber | 6-1,2-6,3-6 |
| ITF Germany F8 | 2018/07/19 09:30 | Marc Sieber v Christopher Heyman | 1-6,5-7 |
| ITF Germany F8 | 2018/07/17 14:05 | Viktor Durasovic v Marc Sieber | 3-6,2-6 |
| Challenger Caltanissetta | 2018/06/12 08:00 | Marcelo Arevalo v Marc Sieber | 1-6,6-1,7-5 |
| Challenger Caltanissetta Qual | 2018/06/11 10:15 | Joao Souza v Marc Sieber | 6-2,3-6,4-6 |
| Challenger Caltanissetta Qual | 2018/06/10 11:30 | Marc Sieber v Pawel Juszczak | 6-0,6-1 |