Select tournament type
| Semi-finals | Rybakov A. | Nikles J. | 2:1 (3:6, 6:4, 6:2) | details | 22.02.2026 | ||
| Semi-finals | Coulibaly E. | Nikles J. | 2:0 (6:3, 6:1) | details | 14.02.2026 | ||
| Quarter-finals | Vankan M. | Nikles J. | 1:2 (3:6, 6:1, 3:6) | details | 13.02.2026 | ||
| 1/8-finals | Smiej Y. | Nikles J. | 0:2 (1:6, 1:6) | details | 12.02.2026 | ||
| 1/16-finals | Aubriot A. | Nikles J. | 0:2 (5:7, 3:6) | details | 11.02.2026 | ||
| 1/16-finals | Uchida K. | Nikles J. | 2:0 (6:4, 6:1) | details | 03.02.2026 | ||
| Final | Nikles J. | Massard L. | 2:0 (6:4, 7:5) | details | 02.02.2026 | ||
| Semi-finals | Nikles J. | Wehnelt K. | 2:0 (6:2, 6:2) | details | 01.02.2026 | ||
| Quarter-finals | Yevseyev D. | Nikles J. | 2:1 (4:6, 6:1, 6:3) | details | 28.11.2025 | ||
| 1/8-finals | Nikles J. | Borg L. | 2:1 (6:4, 2:6, 7:5) | details | 27.11.2025 | ||
| 1/16-finals | Arcon A. | Nikles J. | 0:2 (1:6, 1:6) | details | 25.11.2025 | ||
| Semi-finals | Donski A. | Nikles J. | 2:1 (6:3, 2:6, 6:1) | details | 16.11.2025 | ||
| 1/8-finals | Rejchtman Vinciguerra W. | Nikles J. | 2:0 (6:4, 6:2) | details | 13.11.2025 | ||
| 1/16-finals | Oliel Y. | Nikles J. | 0:2 (3:6, 0:6) | details | 12.11.2025 | ||
| Semi-finals | Kravchenko G. | Nikles J. | 2:1 (4:6, 6:3, 6:3) | details | 18.10.2025 | ||
| Quarter-finals | Nikles J. | Von der Schulenburg J. | 2:1 (6:3, 3:6, 6:3) | details | 17.10.2025 | ||
| 1/8-finals | Nikles J. | Madaras N. | 1:0 RET. (7:66, 3:2) | details | 16.10.2025 | ||
| 1/16-finals | Nikles J. | Kountourakis I. | 2:1 (6:1, 66:7, 7:63) | details | 15.10.2025 | ||
| Final | Nikles J. | Gonzalez Fernandez M. | 2:0 (6:3, 6:2) | details | 12.10.2025 | ||
| Semi-finals | Nesterov P. | Nikles J. | 0:2 (2:6, 0:6) | details | 11.10.2025 | ||
| Quarter-finals | Nikles J. | Van Sambeek F. | 2:0 (6:3, 6:1) | details | 10.10.2025 | ||
| 1/8-finals | Nikles J. | Fradkin J. | 2:0 (6:4, 6:1) | details | 09.10.2025 | ||
| 1/16-finals | Nikles J. | Piatti R. | 2:0 (6:4, 6:0) | details | 08.10.2025 | ||
| Semi-finals | Nikles J. | Oberleitner N. | 0:2 (5:7, 3:6) | details | 28.09.2025 | ||
| Semi-finals | Nikles J. | Bernet H. | 0:2 (3:6, 66:7) | details | 06.09.2025 | ||
| Quarter-finals | Nikles J. | Faurel T. | 2:1 (1:6, 6:3, 6:4) | details | 05.09.2025 | ||
| 1/8-finals | Nikles J. | Freire Da Silva A. | 2:0 (7:64, 6:2) | details | 04.09.2025 | ||
| 1/16-finals | Nikles J. | Stanisavljevic M. | 2:0 (6:2, 6:2) | details | 03.09.2025 | ||
| Quarter-finals | Nikles J. | Wenger D. | 1:2 (6:3, 5:7, 64:7) | details | 29.08.2025 | ||
| 1/8-finals | Nikles J. | Stepanov T. | 2:1 (3:6, 6:2, 7:62) | details | 28.08.2025 | ||
| 1/16-finals | Nikles J. | Aubert E. | 2:0 (6:3, 6:3) | details | 27.08.2025 | ||
| Semi-finals | Nikles J. | Bernet H. | 1:2 (7:65, 4:6, 4:6) | details | 23.08.2025 | ||
| Quarter-finals | Nikles J. | Caniato C. A. | 2:0 (6:4, 6:2) | details | 22.08.2025 | ||
| 1/8-finals | Nikles J. | Fanselow S. | 2:0 (6:4, 6:0) | details | 22.08.2025 | ||
| Semi-finals | Latinovic S./Sachko V. | Nikles J./Von der Schulenburg J. | 2:1 (2:6, 6:4, 10:7) | details | 27.02.2026 | ||
| Quarter-finals | Nikles J./Von der Schulenburg J. | Bernet H./Bertola R. | 2:1 (3:6, 7:64, 10:4) | details | 26.02.2026 | ||
| 1/8-finals | Martos Gornes S./Pujol Navarro B. | Nikles J./Von der Schulenburg J. | 1:2 (1:6, 7:5, 6:10) | details | 25.02.2026 | ||
| Semi-finals | Mondazzi A./Sciahbasi M. | Iannaccone F./Nikles J. | 2:0 (6:3, 7:5) | details | 13.02.2026 | ||
| Quarter-finals | Dominguez Alonso J./Echeverria J. | Iannaccone F./Nikles J. | 1:2 (2:6, 6:0, 13:15) | details | 12.02.2026 | ||
| 1/8-finals | Fondriest M./Morolli A. | Iannaccone F./Nikles J. | 0:0 RET. (0:5) | details | 10.02.2026 | ||
| 1/8-finals | Nikles J./Ursu V. | Hermans M./Wehnelt K. | 0:2 (63:7, 5:7) | details | 04.02.2026 | ||
| Quarter-finals | Murtaza M./Qureshi A. | Nikles J./Ursu V. | 2:1 (6:3, 65:7, 10:7) | details | 27.11.2025 | ||
| 1/8-finals | Genier T./Nikles J. | Benson M./Falck R. | 1:2 (2:6, 6:2, 5:10) | details | 14.10.2025 | ||
| Quarter-finals | Benson M./Lieberman H. | Genier T./Nikles J. | 2:0 (6:3, 6:2) | details | 09.10.2025 | ||
| 1/8-finals | Ochi M./Seidman L. | Genier T./Nikles J. | 0:2 (3:6, 3:6) | details | 07.10.2025 | ||
| 1/8-finals | Nikles J./Wenger D. | Burdet A./Genier T. | 0:2 (2:6, 5:7) | details | 02.09.2025 | ||
| 1/8-finals | Krattiger J./Ouzilou H. | Bertola R./Nikles J. | WO. | details | 28.08.2025 | ||
| Semi-finals | Genier T./Nikles J. | Barry C./Gerch L. | 0:2 (4:6, 4:6) | details | 23.08.2025 | ||
| Quarter-finals | Thomas F./Venger R. | Genier T./Nikles J. | 0:2 (4:6, 5:7) | details | 22.08.2025 | ||
| 1/8-finals | Buchwalder R./Panzo K. | Genier T./Nikles J. | 0:2 (1:6, 3:6) | details | 21.08.2025 | ||