Stadium: Court 6 Round: 62 Ground: Hardcourt outdoor
| UTR Pro Tennis Series - Hillerød | 2022/02/19 13:30 | Ammar Elamin v Nikolaj Katic | 7-6,5-0 |
| UTR Pro Tennis Series - Hillerød | 2022/02/18 11:00 | David Perez Sanz v Nikolaj Katic | 6-2,7-6 |
| UTR Pro Tennis Series - Hillerød | 2022/02/17 11:00 | Ricardo Villacorta-Alonso v Nikolaj Katic | 6-4,6-4 |
| UTR Pro Tennis Series - Hillerød | 2022/02/16 15:30 | Ivan Penev v Nikolaj Katic | 6-2,5-4 |
| UTR Pro Tennis Series - Hillerød | 2022/02/14 18:00 | Sebastian Grundtvig Jorgensen v Nikolaj Katic | 7-5,5-2 |
| ITF M15 - Antalya | 2022/01/13 11:00 | Juan P Canas Garcia v Nikolaj Katic | 6-4,6-0 |
| ITF M15 - Parnu | 2021/10/26 08:00 | Raffael Schaer v Nikolaj Katic | 7-5,6-4 |
| UTR Pro Tennis Series - Köpenhamn | 2021/10/23 07:00 | Nikolaj Katic v Jose Antonio Rodriguez Rodriguez | 6-7,2-6 |
| ITF M15 - Sharm El Sheikh | 2022/02/21 10:30 | Petr Hajek v Nico Mostardi | 6-1,6-4 |
| ITF M15 - Oberhaching | 2022/02/13 13:30 | Johannes Ingildsen v Nico Mostardi | 6-3,6-1 |
| ITF M15 - Oberhaching | 2022/02/13 10:00 | Nico Mostardi v Felix Einig | 7-6,6-3 |
| ITF M15 - Antalya | 2022/02/06 07:00 | Sarp Agabigun v Nico Mostardi | 6-2,7-5 |
| ITF M15 - Antalya | 2022/02/03 11:00 | Igor Shrolik v Nico Mostardi | 6-2,3-6,10-5 |
| ITF M15 - Antalya | 2022/02/01 11:30 | Daniil Golubev v Nico Mostardi | 1-6,1-6 |
| ITF M25 - Kairo | 2022/01/24 08:00 | Filippo Speziali v Nico Mostardi | 6-4,7-6 |
| ITF M15 - East Lansing | 2021/11/17 20:45 | Nico Mostardi v Colin Sinclair | 3-6,4-6 |