Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF Poland F4 | 2018/05/21 07:00 | Dembek, Michal v Kolasinski, Filip | 6-3,6-2 |
| ITF Poland F4 | 2018/05/20 11:00 | Kolasinski, Filip v Collins, Sean | 6-3,6-3 |
| ITF - M15 Sharm El Sheikh | 2019/04/05 08:00 | Guttau, Niklas v Lukas Klein | 3-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2019/04/04 09:15 | Guttau, Niklas v Staeheli, Luca | 6-2,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/03/25 12:00 | Guttau, Niklas v Petrenko, Anatoliy | 7-5,3-6,6-10 |
| ITF - M15 Sharm El Sheikh | 2019/03/25 10:00 | Simon Beaupain v Guttau, Niklas | 6-7,4-6 |
| ITF - M15 Sharm El Sheikh | 2019/03/20 08:00 | Vidal Azorin, Jose Fco v Guttau, Niklas | 6-0,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/03/11 11:00 | Guttau, Niklas v Stefan Palosi | 3-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2019/03/11 08:00 | Kolisnyk, Olexiy v Guttau, Niklas | 7-6,2-6,3-10 |
| ITF Germany F16 | 2018/10/21 08:00 | Sizya Ernest Kivanda v Guttau, Niklas | 7-5,6-4 |