Estadio: Court 1 Round: 62 Ground: Clay
| ITF M25 Split | 2022/04/25 10:20 | Drazen Petrovic v Constantin Frantzen | 6-4,7-5 |
| ITF M15 Monastir | 2022/04/06 12:35 | Constantin Frantzen v Szymon Kielan | 3-6,5-7 |
| ITF M25 Monastir | 2022/04/04 13:30 | Constantin Frantzen v Jakub Katuch | 6-3,6-0 |
| ITF M25 Monastir | 2022/04/04 09:00 | Constantin Frantzen v Matthew Stubbings | 6-1,6-2 |
| ITF M25 Monastir | 2022/03/27 10:00 | Constantin Frantzen v Pol Wattanakul | 6-7,7-5,8-10 |
| ITF M25 Monastir | 2022/03/23 07:30 | Louis Herman v Constantin Frantzen | 6-2,6-1 |
| ITF M25 Monastir | 2022/03/20 09:00 | Constantin Frantzen v Alexandre Aubriot | 6-3,6-3 |
| ITF M25 Trimbach | 2022/03/17 09:00 | Johannes Haerteis v Constantin Frantzen | 6-3,6-7,6-2 |
| ITF M25 Quinta Do Lago | 2021/10/18 12:20 | Mihailo Kecojevic v Amaury Raynel | 1-6,3-6 |
| ITF M25 Loulé | 2021/10/11 13:50 | Mihailo Kecojevic v Miguel Gomes | 0-6,2-6 |
| ITF M25 Loulé | 2021/10/10 16:00 | Aditya Katticaren v Mihailo Kecojevic | 1-6,1-6 |
| ITF M15 Doboj | 2021/07/11 09:30 | Mihailo Kecojevic v Stefan Granolic | 2-6,4-6 |
| ITF M15 Troisdorf | 2021/05/09 08:00 | Tom Kocevar-Desman v Mihailo Kecojevic | 6-1,6-2 |
| ITF M15 Troisdorf | 2019/05/07 08:00 | Mihailo Kecojevic v James Frawley | 1-6,2-6 |