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| Semi-finals | Miguel L. A. | Behrmann T. | 2:0 (6:4, 6:4) | detalhes | 11.09.2026 | ||
| Quarter-finals | Massellani S. | Behrmann T. | 1:2 (6:3, 2:6, 3:6) | detalhes | 10.09.2026 | ||
| 1/8-finals | Johnson A. | Behrmann T. | 1:2 (6:4, 62:7, 2:6) | detalhes | 09.09.2026 | ||
| 1/16-finals | Chelemen M. V. | Behrmann T. | 0:2 (4:6, 4:6) | detalhes | 07.09.2026 | ||
| 1/32-finals | Cozad R. | Behrmann T. | 0:2 (65:7, 1:6) | detalhes | 06.09.2026 | ||
| 1/8-finals | Behrmann T. | Barsukov N. | 0:2 (65:7, 65:7) | detalhes | 27.08.2026 | ||
| 1/16-finals | Behrmann T. | Schell N. | 2:0 (6:2, 6:3) | detalhes | 26.08.2026 | ||
| Final | Behrmann T. | Mashtakov N. | 1:2 (6:2, 3:6, 4:6) | detalhes | 23.08.2026 | ||
| Semi-finals | Noce G. M. | Behrmann T. | 0:2 (1:6, 4:6) | detalhes | 22.08.2026 | ||
| Quarter-finals | Yunis F. | Behrmann T. | 0:2 (0:6, 65:7) | detalhes | 21.08.2026 | ||
| 1/8-finals | Shylov H. | Behrmann T. | 0:2 (1:6, 2:6) | detalhes | 20.08.2026 | ||
| 1/16-finals | Behrmann T. | Pennaforti G. | 2:0 (6:1, 6:0) | detalhes | 19.08.2026 | ||
| 1/8-finals | Behrmann T. | Erhard M. | 0:2 (3:6, 3:6) | detalhes | 23.07.2026 | ||
| 1/16-finals | Gloeckler M. | Behrmann T. | 0:2 (5:7, 2:6) | detalhes | 21.07.2026 | ||
| 1/32-finals | Behrmann T. | Zhalgasbay D. | 1:2 (6:3, 63:7, 68:7) | detalhes | 05.07.2026 | ||
| Quarter-finals | Miguel L. A. | Behrmann T. | 2:1 (6:4, 1:6, 6:3) | detalhes | 04.06.2026 | ||
| 1/8-finals | Domenc M. | Behrmann T. | 0:2 (0:6, 62:7) | detalhes | 03.06.2026 | ||
| 1/16-finals | Majdandzic O. | Behrmann T. | 0:2 (3:6, 1:6) | detalhes | 01.06.2026 | ||
| 1/32-finals | Geldof B. | Behrmann T. | 0:2 (2:6, 2:6) | detalhes | 31.05.2026 | ||
| 1/8-finals | Sesko Z. | Behrmann T. | 2:0 (6:2, 6:4) | detalhes | 29.01.2026 | ||
| 1/16-finals | Zhalgasbay D. | Behrmann T. | 0:2 (3:6, 63:7) | detalhes | 26.01.2026 | ||
| 1/32-finals | Ibraimi Y. | Behrmann T. | 0:2 (1:6, 4:6) | detalhes | 25.01.2026 | ||
| 1/32-finals | Behrmann T. | Paldanius O. | 0:1 RET. (3:6, 0:0) | detalhes | 31.08.2025 | ||
| 1/32-finals | Behrmann T. | Boogaard T. | 0:2 (3:6, 4:6) | detalhes | 05.07.2025 | ||
| 1/8-finals | Behrmann T. | Alexandrescou Y. T. | 0:2 (0:6, 1:6) | detalhes | 04.06.2025 | ||
| 1/16-finals | Behrmann T. | Satterfield J. | 2:1 (4:6, 6:4, 7:67) | detalhes | 02.06.2025 | ||
| 1/32-finals | Wazny A. | Behrmann T. | 0:2 (61:7, 2:6) | detalhes | 01.06.2025 | ||
| 1/32-finals | Rejchtman Vinciguerra W. | Behrmann T. | 2:1 (6:4, 3:6, 7:67) | detalhes | 19.01.2025 | ||
| 1/8-finals | Alvarez Y./Cozad R. | Behrmann T./Brand D. | 2:0 (6:2, 6:2) | detalhes | 09.09.2026 | ||
| 1/16-finals | Doig C./Kisimov D. | Behrmann T./Brand D. | 0:2 (3:6, 4:6) | detalhes | 08.09.2026 | ||
| Semi-finals | Behrmann O./Behrmann T. | Duda A./Frohlich M. | 0:2 (1:6, 3:6) | detalhes | 28.08.2026 | ||
| Quarter-finals | Mueller C./Van Herck L. | Behrmann O./Behrmann T. | 0:2 (4:6, 4:6) | detalhes | 27.08.2026 | ||
| 1/8-finals | Behrmann O./Behrmann T. | Doerfler A./Spoolder A. | 2:0 (6:3, 6:2) | detalhes | 25.08.2026 | ||
| Semi-finals | Behrmann T./Zimmer F. | Lanik T./Michalik R. | 1:2 (3:6, 6:4, 7:10) | detalhes | 21.08.2026 | ||
| Quarter-finals | Mashtakov N./Poritskyi A. | Behrmann T./Zimmer F. | 1:2 (6:3, 3:6, 8:10) | detalhes | 21.08.2026 | ||
| 1/8-finals | Behrmann T./Zimmer F. | Hausberger G./Szerencsits B. | 2:0 (6:3, 6:0) | detalhes | 18.08.2026 | ||
| 1/16-finals | Behrmann T./Thomas F. | Ogunsakin O./Raguin N. | 0:2 (3:6, 61:7) | detalhes | 06.07.2026 | ||
| 1/8-finals | Behrmann T./Chen K. S. | Ciurnelli R./Sloboda L. | 0:2 (3:6, 5:7) | detalhes | 03.06.2026 | ||
| 1/16-finals | Behrmann T./Chen K. S. | Geldof B./Pradat P. | 2:0 (6:2, 6:4) | detalhes | 02.06.2026 | ||
| 1/8-finals | Ibraimi Y./Kose C. | Behrmann T./Gabet A. | 2:1 (7:60, 64:7, 10:5) | detalhes | 27.01.2026 | ||
| 1/16-finals | Blus A./Gonzalez-Galino V. | Behrmann T./Gabet A. | 0:2 (1:6, 3:6) | detalhes | 26.01.2026 | ||
| 1/16-finals | Paldanius O./Wazny A. | Behrmann T./Thomas F. | CAN. | detalhes | 02.09.2025 | ||
| 1/16-finals | Rottgering M./Schoenmakers H. | Behrmann T./Belozertsev N. | 2:0 (6:1, 6:2) | detalhes | 07.07.2025 | ||
| 1/8-finals | Behrmann T./Belozertsev N. | Bonding O./Leach J. | 1:2 (6:4, 3:6, 6:10) | detalhes | 04.06.2025 | ||
| 1/16-finals | Clerc D./Couturier L. | Behrmann T./Belozertsev N. | 1:2 (4:6, 6:4, 9:11) | detalhes | 03.06.2025 | ||
| 1/16-finals | Bonding O./Leach J. | Alexandrescou Y. T./Behrmann T. | 2:0 (6:4, 6:4) | detalhes | 20.01.2025 | ||