Stadium: Court 5 Round: 25 Ground: Clay
| ITF M25 Prague | 2023/05/16 08:00 | Filip Duda v Jan Hrazdil | 6-4,6-7,9-11 |
| ITF M25 Prague | 2023/05/15 10:30 | Syl Gaxherri v Jan Hrazdil | 5-7,4-6 |
| Challenger Prague | 2023/05/01 08:30 | Jan Hrazdil v Pablo Llamas Ruiz | 6-7,1-6 |
| Challenger Prague | 2023/04/30 10:00 | Dane Sweeny v Jan Hrazdil | 2-6,4-6 |
| ITF M25 Pardubice | 2022/09/21 12:10 | Matyas Cerny v Jan Hrazdil | 7-5,6-3 |
| ITF M15 Innsbruck | 2022/07/20 13:10 | Jan Hrazdil v Lukas Palovic | 6-7,5-7 |
| ITF M15 Litija | 2022/07/14 08:00 | Pavel Nejedly v Jan Hrazdil | 6-2,6-3 |
| ITF M15 Litija | 2022/07/13 08:00 | Jan Hrazdil v Alen Rogic-Hadzalic | 6-2,7-6 |
| ITF M25 Prague | 2023/05/16 08:55 | Michael Agwi v Christian Fellin | 3-6,3-6 |
| ITF M25 Prague | 2023/05/14 12:30 | Christian Fellin v Stepan Baum | 6-3,6-7,10-6 |
| ITF M15 Alaminos-Larnaca | 2023/04/26 10:35 | Elmer Moller v Christian Fellin | 6-3,6-2 |
| ITF M15 Alaminos-Larnaca | 2023/04/25 07:00 | Christian Fellin v Daniil Golubev | 6-0,6-0 |
| ITF M15 Alaminos-Larnaca | 2023/04/24 07:00 | Asaf Friedler v Christian Fellin | 5-7,4-6 |
| ITF M15 Alaminos-Larnaca | 2023/04/23 07:00 | Tim Ruehl v Christian Fellin | 6-7,4-6 |
| ITF M25 Santa Margherita | 2023/04/09 08:30 | Mario G Fernandez v Christian Fellin | 6-3,6-2 |
| ITF M25 Santa Margherita | 2023/04/03 11:00 | Paul Inchauspe v Christian Fellin | 6-1,6-2 |