Select tournament type
| Final | Bicknell B. | Hardt N. | 2:0 (6:2, 6:4) | details | 28.02.2026 | ||
| Semi-finals | Dalmasso G. | Hardt N. | 0:2 (4:6, 65:7) | details | 27.02.2026 | ||
| Quarter-finals | Hardt N. | Fenty A. | 2:1 (6:4, 3:6, 6:3) | details | 26.02.2026 | ||
| 1/8-finals | Hardt N. | Andre S. | 2:0 (7:5, 6:2) | details | 25.02.2026 | ||
| 1/16-finals | Hardt N. | Bertran P. | 2:0 (7:5, 6:2) | details | 24.02.2026 | ||
| 1/16-finals | Galarneau A. | Hardt N. | 2:0 (6:3, 6:0) | details | 17.02.2026 | ||
| Hardt N. | Ozolins K. | CAN. | details | 07.02.2026 | |||
| Hardt N. | Strombachs R. | 2:1 (7:5, 62:7, 6:2) | details | 06.02.2026 | |||
| 1/8-finals | Caniato C. A. | Hardt N. | 2:0 (7:64, 7:63) | details | 31.10.2025 | ||
| 1/16-finals | Hardt N. | Graca J. | 2:0 (6:2, 6:1) | details | 29.10.2025 | ||
| Quarter-finals | Hardt N. | Martin Manzano J. C. | 1:2 (6:4, 64:7, 3:6) | details | 24.10.2025 | ||
| 1/8-finals | Hardt N. | Iannaccone F. | 2:1 (6:3, 4:6, 7:63) | details | 24.10.2025 | ||
| 1/16-finals | Chepelev A. | Hardt N. | 0:2 (4:6, 3:6) | details | 20.10.2025 | ||
| Quarter-finals | Recek D. | Hardt N. | 2:1 (1:6, 6:4, 6:2) | details | 17.10.2025 | ||
| 1/8-finals | Hardt N. | Giustino L. | 0:0 RET. (5:2) | details | 15.10.2025 | ||
| 1/16-finals | Hardt N. | Berto L. | 2:0 (6:1, 6:1) | details | 14.10.2025 | ||
| 1/8-finals | Hardt N. | Gakhov I. | 0:2 (2:6, 1:6) | details | 02.10.2025 | ||
| 1/16-finals | Antoni R. | Hardt N. | 0:2 (3:6, 2:6) | details | 01.10.2025 | ||
| Final | Giustino L. | Hardt N. | 1:2 (4:6, 6:3, 2:6) | details | 28.09.2025 | ||
| Semi-finals | Hardt N. | Gakhov I. | 2:1 (7:64, 64:7, 6:3) | details | 27.09.2025 | ||
| Quarter-finals | Hardt N. | Sanchez Jover C. | 2:0 (6:2, 6:3) | details | 26.09.2025 | ||
| 1/8-finals | Alcala Gurri M. | Hardt N. | 0:2 (1:6, 3:6) | details | 25.09.2025 | ||
| 1/16-finals | Cordoba C. | Hardt N. | 0:1 RET. (63:7, 0:2) | details | 24.09.2025 | ||
| Semi-finals | Rosenkranz M. | Hardt N. | 2:0 (6:4, 6:3) | details | 03.08.2025 | ||
| Semi-finals | Thanos A. | Hardt N. | 2:0 (6:2, 6:1) | details | 02.08.2025 | ||
| Quarter-finals | Hardt N. | Vanshelboim E. | 2:0 (6:1, 6:4) | details | 01.08.2025 | ||
| 1/8-finals | Hardt N. | Shepp A. | 2:0 (6:3, 6:1) | details | 31.07.2025 | ||
| 1/16-finals | Hardt N. | Hannestad B. | 2:0 (7:5, 6:3) | details | 29.07.2025 | ||
| 1/16-finals | Planella Hernandez S. | Hardt N. | CAN. | details | 23.07.2025 | ||
| Quarter-finals | Siniakov D. | Hardt N. | 2:0 (6:2, 6:3) | details | 11.07.2025 | ||
| 1/8-finals | Hardt N. | Zick S. | 2:1 (4:6, 6:4, 6:1) | details | 10.07.2025 | ||
| 1/16-finals | Fix D. | Hardt N. | 0:2 (5:7, 3:6) | details | 09.07.2025 | ||
| Quarter-finals | Planinsek F. J. | Hardt N. | 2:1 (4:6, 7:66, 7:66) | details | 04.07.2025 | ||
| 1/8-finals | Lopez Morillo I. | Hardt N. | 0:2 (2:6, 5:7) | details | 03.07.2025 | ||
| 1/16-finals | Hardt N. | Molleker R. | 2:0 (6:4, 6:2) | details | 02.07.2025 | ||
| Semi-finals | Hardt N. | Moeller M. | 0:2 (65:7, 3:6) | details | 28.06.2025 | ||
| Quarter-finals | Dutra Da Silva D. | Hardt N. | 0:2 (1:6, 3:6) | details | 27.06.2025 | ||
| 1/8-finals | Hardt N. | Demanet E. | 2:0 (6:2, 6:1) | details | 26.06.2025 | ||
| 1/16-finals | Hardt N. | Raynel A. | 2:0 (6:3, 6:3) | details | 25.06.2025 | ||
| 1/16-finals | Nesterov P. | Hardt N. | 2:0 (7:5, 6:4) | details | 18.06.2025 | ||
| Quarter-finals | Seeman J./Strombachs R. | Hardt N./Munoz E. | 2:1 (3:6, 6:3, 11:9) | details | 26.02.2026 | ||
| 1/8-finals | Hardt N./Munoz E. | Roberts J./Slocombe S. | 2:0 (6:3, 6:3) | details | 25.02.2026 | ||
| 1/8-finals | Hardt N./Munoz E. | Catini N./Gurenko V. | 2:0 (6:3, 6:3) | details | 25.02.2026 | ||
| Bertran P./Hardt N. | Ozolins K./Strombachs R. | 2:0 (6:4, 7:62) | details | 07.02.2026 | |||
| Quarter-finals | Bondioli F./Oradini G. | Aubriot A./Hardt N. | 2:1 (62:7, 6:3, 11:9) | details | 18.10.2025 | ||
| 1/8-finals | Overmyer K./Pisanu M. | Aubriot A./Hardt N. | 0:2 (0:6, 1:6) | details | 14.10.2025 | ||
| Quarter-finals | Bonnaud A./Branger L. | Beaupain S./Hardt N. | WO. | details | 26.06.2025 | ||
| 1/8-finals | Beaupain S./Hardt N. | Baluska Y./Raynel A. | 2:0 (6:2, 6:0) | details | 24.06.2025 | ||
| Quarter-finals | Genier T./Wenger D. | Aubriot A./Hardt N. | WO. | details | 19.06.2025 | ||
| 1/8-finals | Aubriot A./Hardt N. | Plunger M./Taddia L. | 2:1 (68:7, 6:3, 10:8) | details | 17.06.2025 | ||