| Challenger Koblenz | 2020/02/19 11:50 | Vit Kopriva v Oscar Otte | 6-4,7-6 |
| Challenger Rennes | 2020/01/22 12:30 | Corentin Denolly v Oscar Otte | 6-4,6-2 |
| Australian Open | 2020/01/15 23:00 | Mathias Bourgue v Oscar Otte | 5-7,6-1,6-1 |
| Challenger Canberra | 2020/01/08 04:05 | Henri Laaksonen v Oscar Otte | 3-6,6-4,6-4 |
| Challenger Canberra | 2020/01/06 06:35 | Oscar Otte v Lorenzo Giustino | 5-7,6-1,6-4 |
| Challenger Ortisei | 2019/11/12 13:35 | Jan Choinski v Oscar Otte | 7-6,6-3 |
| Challenger Bratislava | 2019/11/05 14:50 | Yannick Maden v Oscar Otte | 6-4,2-6,6-4 |
| Challenger Bratislava | 2019/11/04 16:10 | Oscar Otte v Mukund Sasikumar | 6-1,6-2 |
| ITF M15 Heraklion | 2020/02/29 09:00 | Kai Wehnelt v Jordan Correia | 6-7,3-6 |
| ITF M15 Heraklion | 2020/02/28 08:30 | Matvey Khomentovskiy v Kai Wehnelt | 6-7,6-3,0-6 |
| ITF M15 Heraklion | 2020/02/27 08:30 | Buvaysar Gadamauri v Kai Wehnelt | 5-7,1-6 |
| ITF M15 Heraklion | 2020/02/26 11:00 | Constantin Schmitz v Kai Wehnelt | 4-6,6-7 |
| ITF M15 Heraklion | 2020/02/19 10:00 | Kai Wehnelt v Omar Giacalone | 6-7,6-1,6-7 |
| ITF M15 Heraklion | 2020/02/12 12:10 | Kai Wehnelt v Clement Geens | 2-6,2-6 |
| ITF M25 Nussloch | 2020/01/22 14:40 | Giulio Zeppieri v Kai Wehnelt | 6-3,7-6 |
| ITF M25 Nussloch | 2020/01/20 19:55 | Kai Wehnelt v Adrian Bodmer | 1-6,3-6 |