Stadium: C Round: 27 Ground: Clay
| Challenger Poznan | 2018/06/07 16:45 | Alexey Vatutin v Jeremy Jahn | 7-6,4-6,6-3 |
| Challenger Poznan | 2018/06/06 14:00 | Jeremy Jahn v Kamil Majchrzak | 6-3,2-6,6-0 |
| Challenger Poznan Qual | 2018/06/04 13:30 | Jeremy Jahn v Guillermo Olaso | 6-7,6-1,6-2 |
| Challenger Poznan Qual | 2018/06/04 08:00 | Bernabe Zapata Miralles v Jeremy Jahn | 4-6,6-3,0-6 |
| Challenger Poznan Qual | 2018/06/03 08:00 | Kacper Zuk v Jeremy Jahn | 3-6,4-6 |
| ATP Geneva Qual | 2018/05/20 10:50 | Jeremy Jahn v Lukas Rosol | 7-6,3-6,5-7 |
| ATP Geneva Qual | 2018/05/19 14:25 | Nino Serdarusic v Jeremy Jahn | 4-6,4-6 |
| Challenger Heilbronn Qual | 2018/05/14 10:00 | Benjamin Hassan v Jeremy Jahn | 6-2,2-6,6-4 |
| Challenger Marburg Qual | 2018/07/01 13:00 | Corentin Moutet v Christian Lindell | 6-2,6-2 |
| Challenger Marburg Qual | 2018/06/30 17:30 | Christian Lindell v George Von Massow | 7-6,7-5 |
| Challenger Milan Qual | 2018/06/24 08:00 | Christian Lindell v Cristian Rodriguez | 6-4,5-7,3-6 |
| Challenger Milan Qual | 2018/06/23 10:20 | Alejandro Gonzalez v Christian Lindell | 3-6,6-2,2-6 |
| Challenger L'Aquila Qual | 2018/06/16 10:15 | Gianluca Di Nicola v Christian Lindell | 7-5,6-3 |
| Challenger Caltanissetta Qual | 2018/06/09 08:00 | Davide Galoppini v Christian Lindell | 6-2,3-6,6-2 |
| Challenger Poznan Qual | 2018/06/04 10:10 | Zsombor Piros v Christian Lindell | 6-4,5-7,6-3 |
| ITF Brazil F4 | 2018/05/17 16:25 | Joao Lucas Reis da Silva v Christian Lindell | 6-0,6-3 |