 Germany: M25 Wetzlar - Doubles - Main |
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| Quarter-finals | Broska F./Ramskogler G. | Opitz J./Steiner M. | 2:1 (0:6, 7:64, 10:7) | details | 01.08.2024 |
| 1/8-finals | Fusenig T.-F./Melzer L. | Opitz J./Steiner M. | 0:2 (1:6, 1:6) | details | 30.07.2024 |
 Austria: M25 Kramsach - Doubles - Main |
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| Final | Ruehl T./Zahraj P. | Opitz J./Steiner M. | 2:1 (3:6, 7:5, 10:8) | details | 27.07.2024 |
| Semi-finals | Benson M./Vasser O. | Opitz J./Steiner M. | 0:2 (5:7, 3:6) | details | 26.07.2024 |
| Quarter-finals | Gaxherri S./Pinter P. L. | Opitz J./Steiner M. | 0:2 (1:6, 4:6) | details | 25.07.2024 |
| 1/8-finals | Opitz J./Steiner M. | Poljak D./Privara P. B. | 2:0 (6:1, 6:1) | details | 23.07.2024 |
| Germany: M25 Nussloch - Doubles - Main |
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| 1/8-finals | Opitz J./Steiner M. | Echeverria J./Naw H. | 0:2 (4:6, 4:6) | details | 23.01.2024 |
| Germany: M25 Wetzlar - Doubles - Main |
|---|
| 1/8-finals | Caripi V./Gerch L. | Opitz J./Steiner M. | 2:1 (7:5, 4:6, 10:8) | details | 02.08.2023 |
 Tunisia: M15 Monastir 44 - Doubles - Main |
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| Final | Bittoun C./Jones M. | Opitz J./Steiner M. | 2:1 (63:7, 6:3, 10:6) | details | 12.11.2022 |
| Semi-finals | Bhangdia J./Wiedenmann L. | Opitz J./Steiner M. | 0:2 (2:6, 2:6) | details | 11.11.2022 |
| Quarter-finals | Opitz J./Steiner M. | Ghorbel A./Ouakaa A. | 2:1 (5:7, 7:5, 12:10) | details | 10.11.2022 |
| 1/8-finals | Delage P./Marmousez L. | Opitz J./Steiner M. | 0:2 (2:6, 3:6) | details | 08.11.2022 |
| Tunisia: M15 Monastir 43 - Doubles - Main |
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| Final | Opitz J./Steiner M. | Bittoun C./Jones M. | 1:2 (1:6, 6:4, 7:10) | details | 05.11.2022 |
| Semi-finals | Opitz J./Steiner M. | Beaupain S./Rojas O. | 2:0 (6:2, 6:2) | details | 04.11.2022 |
| Quarter-finals | Donski A./Pichler D. | Opitz J./Steiner M. | 0:2 (1:6, 65:7) | details | 03.11.2022 |
| 1/8-finals | Opitz J./Steiner M. | Goldberg Alviani N. R./Kroslak J. | 2:0 (6:4, 6:4) | details | 01.11.2022 |
| 1/8-finals | Opitz J./Steiner M. | Deleersnyder C./Tepmahc N. | CAN. | details | 01.11.2022 |
| Germany: M25+H Kassel - Doubles - Main |
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| 1/8-finals | Opitz J./Steiner M. | Frantzen C./Sandkaulen T. | 0:2 (1:6, 2:6) | details | 12.07.2022 |
| Germany: M25 Marburg - Doubles - Main |
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| Final | Opitz J./Steiner M. | Beloborodko I./Uzhylovskyi V. | 2:1 (7:64, 63:7, 12:10) | details | 09.07.2022 |
| Semi-finals | Opitz J./Steiner M. | Frantzen C./Sandkaulen T. | 2:0 (6:2, 7:63) | details | 08.07.2022 |
| Quarter-finals | Luz O./Zormann Da Silva M. | Opitz J./Steiner M. | WO. | details | 08.07.2022 |
| 1/8-finals | Opitz J./Steiner M. | Mannapov A./Schoolkate T. | 1:0 RET. (6:1, 4:2) | details | 06.07.2022 |
 Turkey: M15 Antalya 31 - Doubles - Main |
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| Quarter-finals | Madarasz G./Nagy P. | Opitz J./Steiner M. | 2:1 (6:2, 3:6, 10:3) | details | 11.11.2021 |
| 1/8-finals | Apostol B. I./Manda C. | Opitz J./Steiner M. | 0:2 (4:6, 1:6) | details | 09.11.2021 |
