Stadium: Rado CC Round: 54 Ground: Carpet indoor
| ITF M25 Glasgow | 2022/02/17 10:00 | Anton Matusevich v Constantin Frantzen | 6-4,6-2 |
| ITF M25 Glasgow | 2022/02/15 10:00 | Felix Gill v Constantin Frantzen | 7-6,4-6,0-6 |
| ITF M25 Glasgow | 2022/02/14 09:55 | Osgar O'Hoisin v Constantin Frantzen | 3-6,2-6 |
| ITF M25 Shrewsbury | 2022/02/08 16:50 | Alastair Gray v Constantin Frantzen | 6-2,6-1 |
| ITF M25 Shrewsbury | 2022/02/07 10:00 | Joshua Paris v Constantin Frantzen | 5-7,6-7 |
| ITF M25 Shrewsbury | 2022/02/06 14:45 | Constantin Frantzen v Adam Jones | 6-2,6-2 |
| ITF M25 Monastir | 2022/01/30 11:30 | Niccolo Baroni v Constantin Frantzen | 6-4,6-7,10-8 |
| ITF M25 Monastir | 2022/01/23 11:30 | Constantin Frantzen v Dominik Recek | 3-6,4-6 |
| ITF M25 Muttenz | 2021/08/16 11:45 | Mirko Martinez v Jasin Jakupi | 6-0,6-0 |
| ITF M25 Klosters | 2020/09/14 08:25 | Yannik Steinegger v Jasin Jakupi | 6-2,6-1 |