Stadium: MTA 22 Round: 62 Ground: Clay
| ITF M15 Sharm El Sheikh | 2021/03/16 10:10 | Niklas Guttau v Shao-Fan Liu | 3-6,6-1,4-10 |
| ITF M15 Sharm El Sheikh | 2021/03/15 11:30 | Niklas Guttau v Lorenzo Rottoli | 6-3,6-1 |
| ITF M15 Sharm El Sheikh | 2021/03/14 14:30 | Niklas Guttau v Babji Siva Atturu | 6-0,6-2 |
| ITF M15 Sharm El Sheikh | 2021/03/09 09:45 | Niklas Guttau v Illya Beloborodko | 7-5,4-6,4-10 |
| ITF M15 Sharm El Sheikh | 2021/03/08 11:30 | Niklas Guttau v Mirko Lagasio | 6-3,4-6,10-4 |
| ITF M15 Sharm El Sheikh | 2021/03/07 16:00 | Niklas Guttau v Yacoub Makzoume | 6-3,6-2 |
| ITF M15 Monastir | 2021/02/28 10:30 | Niklas Guttau v Stefano Reitano | 3-6,6-3,7-10 |
| ITF M15 Monastir | 2021/02/22 08:00 | Samir Hamza Reguig v Niklas Guttau | 6-7,6-1,11-9 |