| Challenger Ochsenhausen | 2018/02/07 08:10 | Aleksandar Karakasevic v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2018/05/11 09:10 | Evgueni Chtchetinine v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2018/05/11 07:10 | Miroslav Sklensky v Sven Happek | W | 1-3 |
| Challenger Ochsenhausen | 2018/05/10 11:50 | Petr David v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2018/05/10 09:10 | Sven Happek v Andrew Baggaley | L | 0-3 |
| Challenger Ochsenhausen | 2018/05/10 06:30 | Sven Happek v Valerij Rakov | L | 0-3 |
| Challenger Ochsenhausen | 2018/05/09 11:10 | Sven Happek v Marius Henninger | L | 2-3 |
| Challenger Ochsenhausen | 2018/05/09 08:30 | Hampus Nordberg v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2018/05/04 09:10 | Miroslav Horejsi v Sven Happek | L | 3-1 |
| Qatar Open XD | 2018/05/07 18:20 | Aleksandar Karakasevic v Paul Drinkhall | W | 3-2 |
| Challenger Ochsenhausen | 2018/04/06 12:50 | Aleksandar Karakasevic v Lehel Demeter | W | 3-1 |
| Challenger Ochsenhausen | 2018/04/06 11:25 | Miroslav Horejsi v Aleksandar Karakasevic | W | 0-3 |
| Challenger Ochsenhausen | 2018/04/06 10:30 | Dmitrij Prokopcov v Aleksandar Karakasevic | W | 2-3 |
| Challenger Ochsenhausen | 2018/04/05 12:30 | Aleksandar Karakasevic v Miroslav Horejsi | L | 1-3 |
| Challenger Ochsenhausen | 2018/04/05 11:10 | Dauud Cheaib v Aleksandar Karakasevic | W | 1-3 |
| Challenger Ochsenhausen | 2018/04/05 09:10 | Evgueni Chtchetinine v Aleksandar Karakasevic | W | 0-3 |
| Challenger Ochsenhausen | 2018/04/04 13:10 | Nicolas Galvano v Aleksandar Karakasevic | W | 1-3 |