Spain: M15 Villena 2 - Doubles - Main |
| 1/8-finals | Schlageter J./Toto N. | Martinez A./Montes-De La Torre I. | 0:0 RET. (3:4) | details | 26.02.2025 |
Spain: M15 Villena - Doubles - Main |
| 1/8-finals | De Boes M./Schlageter J. | Fita Juan S./Miletich I. | 1:2 (6:2, 4:6, 5:10) | details | 18.02.2025 |
Germany: M15 Oberhaching - Doubles - Main |
| 1/8-finals | Dedura-Palomero M./McDonald N. | Hoffmann M./Schlageter J. | 2:1 (6:4, 4:6, 14:12) | details | 11.02.2025 |
Germany: M25 Nussloch - Doubles - Main |
| 1/8-finals | Hoffmann M./Schlageter J. | Grevelius E./Heinonen A. | 0:2 (3:6, 4:6) | details | 21.01.2025 |
Germany: M15 Cadolzburg - Doubles - Main |
| Quarter-finals | Alam P./Schlageter J. | Cerny M./Donald M. | 0:2 (65:7, 3:6) | details | 16.01.2025 |
| 1/8-finals | Antonijevic F. L./Sisic F. | Alam P./Schlageter J. | WO. | details | 14.01.2025 |
Greece: M15 Heraklion 7 - Doubles - Main |
| Quarter-finals | Antonopoulos C./Tsitsipas Pe. | Hoffmann M./Schlageter J. | 2:0 (6:4, 6:3) | details | 21.11.2024 |
| 1/8-finals | Schinas S./Shumilov E. | Hoffmann M./Schlageter J. | 0:2 (3:6, 4:6) | details | 20.11.2024 |
Egypt: M15 Sharm ElSheikh 15 - Doubles - Main |
| Quarter-finals | Alam P./Schlageter J. | Tamm K./Zhu M. | 0:2 (4:6, 1:6) | details | 07.11.2024 |
| 1/8-finals | Hrazdil J./Lanik T. | Alam P./Schlageter J. | 1:2 (2:6, 6:2, 9:11) | details | 05.11.2024 |
Egypt: M15 Sharm ElSheikh 14 - Doubles - Main |
| 1/8-finals | Schlageter J./Stanke C. | Bar Biryukov P./Philippov E. | 1:2 (4:6, 6:3, 8:10) | details | 29.10.2024 |
Austria: M15 Vienna - Doubles - Main |
| 1/8-finals | Pino S./Schlageter J. | Elsayed A./Safwat M. | 0:2 (3:6, 0:6) | details | 27.08.2024 |
Austria: M15 Kottingbrunn - Doubles - Main |
| Quarter-finals | Kelm Y./Schlageter J. | Bassem Sobhy M./Zakaria F. | 1:2 (6:3, 2:6, 4:10) | details | 22.08.2024 |
| 1/8-finals | Golubev D./Lomakin G. | Kelm Y./Schlageter J. | 0:2 (3:6, 3:6) | details | 21.08.2024 |
Germany: M15 Überlingen - Doubles - Main |
| Semi-finals | Egea F. E./Iamachkine P. | Fix D./Schlageter J. | WO. | details | 16.08.2024 |
| Quarter-finals | Fix D./Schlageter J. | Sakellaridis D./Sakellaridis M. | 2:1 (6:4, 4:6, 10:7) | details | 15.08.2024 |
| 1/8-finals | Dufner N./Garcia Suarez D. | Fix D./Schlageter J. | 0:2 (2:6, 1:6) | details | 14.08.2024 |
USA: M15 Norman, OK - Doubles - Main |
| 1/8-finals | Banthia S./Kikuchi Y. | Schlageter J./van Assendelft J. | 2:0 (7:5, 6:2) | details | 25.10.2022 |
USA: US Open - Doubles - Main |
| 1/16-finals | Schlageter J./Squire H. | Jianu F. C./Wassermann D. | 1:2 (6:3, 0:6, 5:10) | details | 04.09.2018 |