Stadium: Court 3 Round: 19 Ground: Clay
| ITF Greece F3 | 2016/04/02 06:00 | Mats Rosenkranz v Lukas Klein | 7-5,6-4 |
| Challenger Biel | 2021/09/22 09:00 | Lukas Klein v Mats Moraing | 7-5,4-6,4-6 |
| Challenger Warsaw | 2021/08/28 08:00 | Lukas Klein v Javier Barranco Cosano | 6-3,3-6,4-6 |
| Challenger Warsaw | 2021/08/26 11:00 | Lukas Klein v Andrey Kuznetsov | 7-5,6-1 |
| Challenger Warsaw | 2021/08/24 14:45 | Lukas Klein v Julian Lenz | 6-1,3-6,6-3 |
| Challenger Luedenscheid | 2021/08/17 10:30 | Nicolas Jarry v Lukas Klein | 1-6,7-6,7-6 |
| Challenger Meerbusch | 2021/08/13 11:00 | Lukas Klein v Botic Van De Zandschulp | 4-6,6-3,4-6 |
| Challenger Meerbusch | 2021/08/11 12:00 | Duje Ajdukovic v Lukas Klein | 4-6,6-4,4-6 |
| Challenger Meerbusch | 2021/08/09 14:00 | Lukas Klein v Tobias Kamke | 6-1,6-2 |
| Challenger Turin | 2022/02/28 09:00 | Filip Cristian Jianu v Mats Rosenkranz | 6-3,7-6 |
| Challenger Turin | 2022/02/27 09:00 | Mats Rosenkranz v Evan King | 6-1,7-6 |
| ITF M25 Glasgow | 2022/02/17 14:45 | Mats Rosenkranz v Henri Squire | 3-6,2-6 |
| ITF M25 Glasgow | 2022/02/15 10:00 | Mats Rosenkranz v Alec Beckley | 7-5,6-2 |
| Challenger Cherbourg | 2022/02/08 12:10 | Benjamin Bonzi v Mats Rosenkranz | 6-3,6-2 |
| Challenger Cherbourg | 2022/02/07 10:00 | Evan Furness v Mats Rosenkranz | 4-6,4-6 |
| Challenger Cherbourg | 2022/02/06 09:00 | Mats Rosenkranz v Filip Cristian Jianu | 6-4,7-5 |
| ITF M15 Villena | 2022/02/01 09:30 | John Echeverria v Mats Rosenkranz | 3-6,7-6,6-3 |