Stadium: Center Court Neuss Round: 1
| ITF M15 Kamen | 2019/06/25 14:40 | Daniel Altmaier v Mats Rosenkranz | 6-4,3-6,4-6 |
| ITF M15 Kaltenkirchen | 2019/06/12 08:30 | Daniel Altmaier v Mats Rosenkranz | 6-4,6-1 |
| ITF Kuwait F2 | 2017/11/08 07:00 | Daniel Altmaier v Mats Rosenkranz | 7-6,6-3 |
| Tennis Point Exhibition Series | 2020/05/16 13:40 | Daniel Altmaier v Jan Choinski | 0-4,3-4 |
| Tennis Point Exhibition Series | 2020/05/16 10:30 | Daniel Altmaier v Tim Puetz | 3-4,1-4 |
| Tennis Point Exhibition Series | 2020/05/15 14:50 | Daniel Altmaier v Johannes Haerteis | 4-0,4-0 |
| Tennis Point Exhibition Series | 2020/05/15 07:50 | Daniel Altmaier v Yannick Stephan Born | 4-2,4-2 |
| Tennis Point Exhibition Series | 2020/05/14 13:00 | Daniel Altmaier v Hazem Naw | 4-0,4-2 |
| Tennis Point Exhibition Series | 2020/05/14 07:00 | Dustin Brown v Daniel Altmaier | 4-1,2-4,4-2 |
| Tennis Point Exhibition Series | 2020/05/10 16:35 | Jan Choinski v Daniel Altmaier | 0-4,2-4 |
| Tennis Point Exhibition Series | 2020/05/10 12:25 | Yannick Hanfmann v Daniel Altmaier | 4-1,4-1 |
| ITF M15 Sharm El Sheikh | 2020/03/11 11:30 | Oleksandr Bielinskyi v Mats Rosenkranz | 4-6,3-6 |
| ITF M15 Sharm El Sheikh | 2020/03/04 11:05 | Mats Rosenkranz v Giorgio Ricca | 6-4,6-7,4-6 |
| ITF M25 Sunderland | 2020/02/23 11:30 | Mats Rosenkranz v Josip Krstanovic | 6-3,1-6,8-10 |
| ITF M15 Oberhaching | 2020/02/18 12:55 | Dalibor Svrcina v Mats Rosenkranz | 6-4,6-3 |
| ITF M25 Barnstaple | 2020/02/12 11:45 | Mats Rosenkranz v Christopher Heyman | 5-7,3-6 |
| ITF M25 Barnstaple | 2020/02/11 12:45 | Mats Rosenkranz v Jack Gibbens | 6-4,6-1 |
| ITF M15 Veigy-Foncenex | 2020/01/30 09:00 | Mats Rosenkranz v Elmar Ejupovic | 4-6,7-6,2-6 |
| ITF M15 Veigy-Foncenex | 2020/01/28 09:00 | Alexander Erler v Mats Rosenkranz | 3-6,7-6,2-6 |