Round: 54 Ground: Hardcourt indoor
| ITF Germany F12 | 2018/08/12 13:00 | Daniel Kopeinigg v Paul-Georg Guenther | 6-3,7-5 |
| ITF Germany F10 | 2017/08/06 11:00 | Paul-Georg Guenther v Maikel Borg | 1-6,2-6 |
| ITF Germany F7 | 2017/07/09 08:00 | Raphael Calzi v Paul-Georg Guenther | 6-1,6-1 |
| ITF Germany F6 | 2017/07/02 13:00 | Christophe Tholl v Paul-Georg Guenther | 6-1,6-3 |
| ITF Germany F13 | 2016/10/02 07:30 | Paul-Georg Guenther v Niklas Schell | 2-6,0-6 |
| ITF France F20 Qual | 2016/09/24 10:00 | Tim Van Der Horst v Paul-Georg Guenther | 6-3,6-3 |
| Challenger Meerbusch Qual | 2016/08/13 13:35 | Andrei Vasilevski v Paul-Georg Guenther | 6-0,6-2 |
| ITF Germany F7 | 2016/07/10 08:00 | Paul-Georg Guenther v Jordi Walder | 1-6,1-6 |
| ITF Canada F7 | 2018/09/08 15:00 | Philip Wilbert Major v Kevin Portmann | 6-2,7-5 |
| ITF Canada F6 | 2018/09/01 13:00 | Kevin Portmann v Gabriel Diallo | 3-6,3-6 |
| ITF Georgia F2 | 2018/07/15 08:00 | Vladislav Melnic v Kevin Portmann | 6-1,6-2 |
| ITF Tunisia F25 | 2018/06/23 14:00 | Kevin Portmann v Razvan M Codescu | 1-6,1-6 |
| ITF Tunisia F24 | 2018/06/16 08:00 | Kevin Portmann v Luca Tomasetto | 0-6,1-6 |
| ITF Egypt F17 | 2018/05/06 08:00 | Kevin Portmann v Prithvi Sekhar | 0-6,2-6 |
| ITF Egypt F16 | 2018/05/02 09:10 | Kevin Portmann v Alex M Pujolras | 0-6,0-6 |
| ITF Egypt F13 | 2018/04/07 12:00 | Kevin Portmann v Jonathan Morr | 3-6,1-6 |