Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| 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 |
| 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 |
| ITF M15 Sharm El Sheikh | 2021/03/07 07:00 | Karl Friberg v Lorenzo Rottoli | 6-3,3-6,15-13 |
| ITF M15 Sharm El Sheikh | 2021/02/09 08:55 | Marko Miladinovic v Lorenzo Rottoli | 6-4,6-2 |
| ITF M15 Sharm El Sheikh | 2021/02/08 07:30 | Lorenzo Rottoli v Robert Strombachs | 6-4,6-2 |
| ITF M15 Sharm El Sheikh | 2021/02/07 11:00 | Piotr Matuszewski v Lorenzo Rottoli | 4-6,0-6 |
| ITF M15 Sharm El Sheikh | 2021/02/01 08:00 | Yu Hsiou Hsu v Lorenzo Rottoli | 6-0,6-2 |
| ITF M15 Cairo | 2021/01/25 08:00 | Remy Bertola v Lorenzo Rottoli | 7-6,6-3 |
| ITF M15 Cairo | 2021/01/24 09:30 | Faisal Qamar v Lorenzo Rottoli | 1-6,5-7 |
| ITF M15 Cairo | 2021/01/18 08:00 | Alejo Lorenzo Lingua Lavallen v Lorenzo Rottoli | 6-2,6-2 |