Stadium: Court 4 Round: 54 Ground: Clay
| Schlieren, Singles M-ITF-SUI-02A | 2019/08/19 10:00 | Portmann, Kevin v Neil Oberleitner | 1-6,0-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/08/05 07:30 | Bolotov, Sergey v Portmann, Kevin | 6-1,6-0 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/07/30 08:00 | Boborykin, Alexander v Portmann, Kevin | 6-0,6-0 |
| ITF - M15 Sharm El Sheikh | 2019/01/21 09:30 | Alessandro Ingarao v Portmann, Kevin | 6-3,6-0 |
| ITF Qatar F6 | 2018/12/15 12:25 | Portmann, Kevin v Bharath Nishok Kumaran | 2-6,2-6 |
| ITF Egypt F31 | 2018/12/08 09:00 | Vallejo Ferrer, Adria v Portmann, Kevin | 6-2,6-0 |
| ITF Egypt F30 | 2018/12/01 09:00 | Portmann, Kevin v Sanchez, Gabriel | 0-6,0-6 |
| ITF Egypt F29 | 2018/11/26 08:00 | Uspensky, Dennis v Portmann, Kevin | 6-0,6-1 |
| ITF M15 Ueberlingen | 2019/08/19 12:00 | Kunz, Giordan v Maik Steiner | 0-6,2-6 |
| ITF M15 Ueberlingen | 2019/08/19 08:00 | Kunz, Giordan v Langmajer, Dominik | 7-5,6-4 |
| ITF M15 Trier | 2019/08/12 08:00 | Kunz, Giordan v Marlon Vankan | 0-6,0-6 |
| ITF M25 Bolzano | 2019/07/29 15:05 | Kunz, Giordan v Manuel Mazza | 2-6,1-6 |
| Bad Schussenried, Singles Qualifying M-ITF-GER-10A | 2019/07/22 08:00 | Kunz, Giordan v Kai Lemstra | 1-6,1-6 |
| Kramsach, Singles M-ITF-AUT-02A | 2019/07/15 08:00 | Ragazzi, Alessandro v Kunz, Giordan | 4-6,6-2,10-7 |
| ITF M15 Vilnius | 2019/07/08 07:00 | Quentin Folliot v Kunz, Giordan | 6-1,6-0 |
| ITF - M15 Antalya | 2019/05/07 07:15 | Piotr Grynkowski v Kunz, Giordan | 6-2,6-3 |