Stadium: Lotto RLP Court Round: 24 Ground: Hardcourt indoor
| ITF M15 Uberlingen | 2019/08/25 12:00 | Peter Heller v Louis Wessels | 6-1,6-4 |
| ITF M15 Monastir | 2020/02/06 14:05 | Luis Faria v Louis Wessels | 6-3,6-2 |
| ITF M15 Monastir | 2020/02/04 08:30 | Gauthier Onclin v Louis Wessels | 4-6,6-2,4-6 |
| ITF M15 Cairo | 2020/01/15 11:45 | Fares Zakaria v Louis Wessels | 7-6,6-4 |
| ITF M15 Antalya | 2019/11/28 07:00 | Louis Wessels v Sarp Agabigun | 4-6,6-3,2-6 |
| ITF M15 Antalya | 2019/11/27 09:10 | Louis Wessels v Yanki Erel | 1-6,6-3,6-2 |
| Challenger Hamburg | 2019/10/21 17:30 | Daniel Masur v Louis Wessels | 6-2,6-4 |
| Challenger Ismaning | 2019/10/14 14:10 | Jonas Forejtek v Louis Wessels | 6-1,6-2 |
| ITF M25 Santa Margherita | 2019/10/03 16:15 | Nerman Fatic v Louis Wessels | 6-1,6-2 |
| ITF M15 Palmanova | 2020/02/15 10:45 | Peter Heller v Nikolas Sanchez Izquierdo | 2-6,0-6 |
| ITF M15 Palmanova | 2020/02/13 11:30 | Alexander Zhurbin v Peter Heller | 4-6,1-6 |
| ITF M15 Palmanova | 2020/02/12 12:50 | Max Alcala Gurri v Peter Heller | 2-6,2-6 |
| ITF M25 Nussloch | 2020/01/21 12:05 | Jonas Forejtek v Peter Heller | 6-1,6-3 |
| ITF M15 Manacor | 2020/01/15 10:30 | Joao Monteiro v Peter Heller | 7-5,6-4 |
| ITF M25 Naples | 2019/11/22 18:30 | Juan Pablo Ficovich v Peter Heller | 6-3,6-3 |
| ITF M25 Naples | 2019/11/21 14:00 | Bastian Malla v Peter Heller | 3-6,6-4,1-6 |
| ITF M25 Naples | 2019/11/20 16:15 | Daniel Labrador v Peter Heller | 0-6,2-6 |