Stadium: Court 9 Round: 25 Ground: Hardcourt outdoor
| ITF M15 - Doha | 2021/10/04 12:00 | Dheeraj Kodancha Srinivasan v Nico Hornitschek | 6-7,1-6 |
| ITF M15 - Doha | 2021/10/03 12:00 | Radu F Macovei v Nico Hornitschek | 3-6,0-6 |
| ITF M15 - Vyshkovo | 2021/09/23 08:30 | Nico Hornitschek v Gergely Madarasz | 4-6,6-2,1-6 |
| ITF M15 - Vyshkovo | 2021/09/21 07:00 | Mykhailo Mossur v Nico Hornitschek | 2-6,3-6 |
| ITF M25 - Eupen | 2021/09/06 13:30 | Nico Hornitschek v Tom Gentzsch | 4-6,4-6 |
| ITF M25 - Eupen | 2021/09/05 07:30 | Massimo Brambati v Nico Hornitschek | 2-6,0-6 |
| ITF M25 - Ricany | 2021/08/29 08:00 | Philipp Pavlenko v Nico Hornitschek | 7-5,6-3 |
| ITF M25 - Caslano | 2021/08/23 13:55 | Louroi Martinez v Nico Hornitschek | 6-2,6-2 |
| ITF M15 - Doha | 2021/10/04 12:00 | Essa Qabazard v Felipe Mikkelsen | 7-6,6-2 |
| ITF M15 - Doha | 2021/10/03 12:00 | Theertha Shashank Macherla v Felipe Mikkelsen | 2-6,7-6,8-10 |
| ITF M25 - Falun | 2021/09/26 11:00 | Karl Friberg v Felipe Mikkelsen | 6-1,6-1 |
| ITF M15 - Ulcinj | 2021/09/12 08:00 | Felipe Mikkelsen v Leonardo Rossi | 2-6,1-6 |
| ITF M15 - Ulcinj | 2021/09/06 13:00 | Daniel Ibragimov v Felipe Mikkelsen | 6-1,5-7,10-2 |
| ITF M15 - Ulcinj | 2021/09/05 07:30 | Aleksandar Tomas v Felipe Mikkelsen | 2-6,5-7 |
| ITF M15 - Frederiksberg | 2021/08/01 08:00 | Felipe Mikkelsen v Jordi Walder | 3-6,6-2,4-10 |
| ITF M15 - Vejle | 2021/07/25 11:00 | Felipe Mikkelsen v Elmer Moller | 1-6,6-7 |