Select tournament type
| 1/16-finals | Coman M. A. | Hartig R. | 2:1 (5:7, 6:2, 6:0) | details | 20.05.2026 | ||
| 1/16-finals | Sperle J. | Hartig R. | 2:0 (6:3, 6:2) | details | 29.04.2026 | ||
| 1/16-finals | Loosen T. | Hartig R. | 2:0 (6:4, 7:5) | details | 03.09.2025 | ||
| 1/16-finals | La Vela G. | Hartig R. | 2:0 (7:5, 6:1) | details | 12.03.2025 | ||
| 1/16-finals | Walch A. | Hartig R. | 2:0 (7:5, 6:1) | details | 24.07.2024 | ||
| 1/8-finals | Dell'Elba V./Rubio Fierros A. F. | Campos Perez G./Hartig R. | 2:0 (6:4, 7:64) | details | 09.06.2026 | ||
| Quarter-finals | Hartig R./Varzandeh T. | Gadamauri B./Majdandzic M. | 0:0 RET. (1:2) | details | 04.09.2025 | ||
| 1/8-finals | Knippling P./Schinas S. | Hartig R./Varzandeh T. | 1:2 (6:3, 4:6, 8:10) | details | 02.09.2025 | ||
| 1/8-finals | Hartig R./Varzandeh T. | Bivol M./Martinez Sanz A. | 0:2 (3:6, 68:7) | details | 05.08.2025 | ||
| Semi-finals | Al-Amin K./Hartig R. | Oetzbach A./Paroulek T. | 0:2 (3:6, 4:6) | details | 18.07.2025 | ||