Stadium: Center Court Round: 28 Ground: Carpet indoor
| ITF M25 Nussloch MD | 2023/01/26 17:15 | Handel/Jurajda v Masur/Schnaitter | 3-6,3-6 |
| ITF M25 Nussloch MD | 2023/01/26 18:25 | De Bakker/Hermans v Haerteis/Heller | 4-6,2-6 |
| ITF M25 Nussloch MD | 2020/01/25 13:00 | Haerteis/Heller v Zielinski/Zuk | 3-6,4-6 |
| ITF M25 Nussloch MD | 2020/01/23 15:40 | Fallert/Ocleppo v Haerteis/Heller | 4-6,4-6 |
| ITF M25 Nussloch MD | 2020/01/22 17:10 | Nouza/Sachko v Haerteis/Heller | 6-7,2-6 |
| ITF M25 Nussloch MD | 2020/01/21 16:25 | Binding/Duncan v Haerteis/Heller | 6-7,6-4,7-10 |
| ITF M15 Manacor MD | 2020/01/18 11:30 | Sanchez Jover/Vives Marcos v Haerteis/Heller | 7-6,1-6,3-10 |
| ITF M15 Manacor MD | 2020/01/17 16:35 | Haerteis/Heller v Lopez San Martin/Pla Malfeito | 6-2,6-0 |
| ITF M15 Manacor MD | 2020/01/16 16:00 | Harris/Morillo v Haerteis/Heller | 3-6,1-6 |