Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/02/22 08:00 | Samir Hamza Reguig v Niklas Guttau | 6-7,6-1,11-9 |
| ITF M15 Monastir | 2021/02/21 12:00 | Milan Drinic v Niklas Guttau | 4-6,4-6 |
| German Championship | 2020/12/10 14:00 | Tim Handel v Niklas Guttau | 7-6,7-6 |
| DTB German Pro Series | 2020/06/26 08:00 | Niklas Guttau v Philip Florig | 6-2,7-6 |
| DTB German Pro Series | 2020/06/25 09:20 | Peter Heller v Niklas Guttau | 6-1,6-2 |
| DTB German Pro Series | 2020/06/24 10:00 | Niklas Guttau v Philip Florig | 6-7,6-2,6-1 |
| DTB German Pro Series | 2020/06/23 08:00 | Matthias Bachinger v Niklas Guttau | 6-3,6-1 |
| DTB German Pro Series | 2020/06/14 08:30 | Adrian Oetzbach v Niklas Guttau | 6-3,2-6,6-2 |
| ITF M25 Santa Margherita | 2019/09/18 13:40 | Stefano Reitano v Davide Galoppini | 4-6,1-6 |
| ITF M25 Santa Margherita | 2019/09/17 12:00 | Stefano Reitano v Raffaele Giuliano | 7-5,6-1 |
| ITF M15 Gubbio | 2019/07/16 10:30 | Stefano Reitano v Giuseppe Tresca | 3-6,6-4,7-10 |
| ITF M15 Gubbio | 2019/07/15 08:00 | Stefano Reitano v Manuel Mazza | 6-1,3-6,10-6 |
| ITF M25 Cuneo | 2019/07/01 07:30 | Stefano Reitano v Gregorio Lulli | 5-7,3-6 |
| ITF M15 Reggio Emilia | 2019/05/27 12:30 | Federico Iannaccone v Stefano Reitano | 6-4,6-1 |
| ITF M25 Vercelli | 2019/05/06 08:30 | Giuseppe La Vela v Stefano Reitano | 5-7,6-2,12-10 |
| ITF Italy F30 | 2018/09/29 12:00 | Stefano Reitano v Filippo Giovannini | 6-4,6-3 |