 Tunisia: W35 Hammamet 6 - Doubles - Main |
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| Quarter-finals | Benoit M./Klaffner M. | McPhee K./Zaytseva K. | 0:2 (2:6, 1:6) | details | 26.04.2024 |
| 1/8-finals | Bougouffa . H./Kuparev A. | Benoit M./Klaffner M. | 0:2 (3:6, 61:7) | details | 23.04.2024 |
 World: Billie Jean King Cup - Group I - Doubles - Placement matches |
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| | Klaffner M./Kostic T. | Milovanovic E./Ristic M. | 2:1 (6:3, 4:6, 10:8) | details | 12.04.2024 |
| | Klaffner M./Kraus S. | Milovanovic E./Radivojevic L. | CAN. | details | 12.04.2024 |
| World: Billie Jean King Cup - Group I - Doubles - Main |
|---|
| | Klaffner M./Kostic T. | Karatancheva L./Topalova G. | CAN. | details | 10.04.2024 |
| | Klaffner M./Paszek T. | Karatancheva L./Topalova G. | 1:2 (7:65, 1:6, 6:10) | details | 10.04.2024 |
| | Klaffner M./Kraus S. | Nagy A./Szabanin N. | 2:1 (1:6, 6:1, 10:5) | details | 09.04.2024 |
 Egypt: W15 Sharm ElSheikh 3 - Doubles - Main |
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| Final | Cadar E.-T./Klaffner M. | Bakker A./Van Emst S. | 0:2 (1:6, 0:6) | details | 24.02.2024 |
| Semi-finals | Cadar E.-T./Klaffner M. | Ayukawa M./Szabo B. | 2:1 (6:4, 3:6, 10:4) | details | 23.02.2024 |
| Quarter-finals | Cadar E.-T./Klaffner M. | Balus I./Tothova E. | 2:0 (7:5, 6:3) | details | 22.02.2024 |
| 1/8-finals | Cadar E.-T./Klaffner M. | Brack C./Sall A. | 2:1 (7:64, 4:6, 10:5) | details | 20.02.2024 |
 Germany: W75 Altenkirchen - Doubles - Main |
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| 1/8-finals | Bandecchi S./Bassols M. | Klaffner M./Kraus S. | 2:1 (6:0, 2:6, 10:4) | details | 13.02.2024 |
 Austria: Linz - Doubles - Main |
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| 1/8-finals | Klaffner M./Kraus S. | Muhammad A./Parks A. | 0:2 (1:6, 4:6) | details | 31.01.2024 |
| World: Billie Jean King Cup - World Group - Doubles - Relegation - Play Offs |
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| | Klaffner M./Kraus S. | Contreras Gomez F./Olmos G. | 1:2 (3:6, 6:3, 66:7) | details | 12.11.2023 |
 Greece: W40 Heraklion - Doubles - Main |
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| Semi-finals | Bara I./Jakupovic D. | Klaffner M./Kraus S. | 2:0 (6:2, 7:5) | details | 04.11.2023 |
| Quarter-finals | Klaffner M./Kraus S. | Gettwart F./Lim J. | 2:0 (6:2, 6:3) | details | 02.11.2023 |
| 1/8-finals | Drazic M./Makarova E. | Klaffner M./Kraus S. | 1:2 (7:65, 64:7, 7:10) | details | 01.11.2023 |
| Greece: W25 Heraklion - Doubles - Main |
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| Final | Klaffner M./Kraus S. | Amariei I. D./Todoni A. A. | 1:2 (0:6, 7:5, 1:10) | details | 28.10.2023 |
| Semi-finals | Klaffner M./Kraus S. | Christofi E./Pavlou D. | 2:1 (3:6, 6:3, 10:8) | details | 27.10.2023 |
| Quarter-finals | Klaffner M./Kraus S. | Herrmann S./Rakotomanga Rajaonah T. | 2:0 (6:4, 6:1) | details | 26.10.2023 |
| 1/8-finals | Klaffner M./Kraus S. | Kung L./Ploumis M. | 2:0 (6:4, 6:2) | details | 24.10.2023 |
 Italy: W25 Santa Margherita di Pula 8 - Doubles - Main |
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| Quarter-finals | Scilipoti S./Vargova N. | Klaffner M./Kraus S. | WO. | details | 05.10.2023 |
 Serbia: W40 Kursumlijska Banja - Doubles - Main |
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| Quarter-finals | Sharma A./Strakhova V. | Klaffner M./Kraus S. | 2:0 (6:3, 6:4) | details | 28.09.2023 |
| 1/8-finals | Radenkovic M./Sarcev M. | Klaffner M./Kraus S. | 0:2 (1:6, 3:6) | details | 27.09.2023 |
| Austria: W60 Vienna - Doubles - Main |
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| Final | Bara I./Falkowska W. | Klaffner M./Kraus S. | 2:1 (6:3, 2:6, 13:11) | details | 09.09.2023 |
| Semi-finals | Klaffner M./Kraus S. | Ghioroaie I. G./Simion O. | 2:1 (7:61, 67:7, 10:7) | details | 08.09.2023 |
| Quarter-finals | Klaffner M./Kraus S. | Abduraimova N./Cortez Llorca L. | 2:0 (6:4, 6:4) | details | 07.09.2023 |
| 1/8-finals | Klaffner M./Kraus S. | Milatova S./Tothova E. | 2:0 (7:63, 6:0) | details | 05.09.2023 |
| Germany: W25 Braunschweig - Doubles - Main |
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| Quarter-finals | Ibragimova A./Ovcharenko E. | Klaffner M./Njiric S. | 2:0 (6:4, 7:65) | details | 24.08.2023 |
| 1/8-finals | Klaffner M./Njiric S. | Boehner L./Hering K. | 2:1 (3:6, 6:0, 10:7) | details | 22.08.2023 |
| Germany: Hamburg - Doubles - Main |
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| Quarter-finals | Danilina A./Panova A. | Klaffner M./Kraus S. | 2:0 (6:1, 6:3) | details | 26.07.2023 |
| 1/8-finals | Klaffner M./Kraus S. | Bayerlova M./Radisic N. | 2:0 (6:4, 6:1) | details | 24.07.2023 |
 Netherlands: W60 Amstelveen - Doubles - Main |
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| 1/8-finals | Klaffner M./Kraus S. | Nagy A./Papadakis L. | CAN. | details | 11.07.2023 |
| World: Billie Jean King Cup - World Group - Doubles - Qualification |
|---|
| | Collins D./McNally C. | Klaffner M./Kraus S. | CAN. | details | 15.04.2023 |
| | Gauff C./McNally C. | Klaffner M./Kraus S. | 2:0 (6:1, 6:4) | details | 15.04.2023 |
 Colombia: W25 Sopo - Doubles - Main |
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| Semi-finals | Ambrosio S./Klaffner M. | Naya G./Riera J. | 0:2 (4:6, 3:6) | details | 31.03.2023 |
| Quarter-finals | Herazo Gonzalez M./Vismane D. | Ambrosio S./Klaffner M. | 1:2 (6:1, 4:6, 4:10) | details | 31.03.2023 |
| 1/8-finals | Ambrosio S./Klaffner M. | Becerra A. M./Vargas Gonzalez K. | 2:0 (6:1, 6:2) | details | 30.03.2023 |
| Colombia: W25 Mosquera - Doubles - Main |
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| Quarter-finals | Klaffner M./Kraus S. | Bonardi B./Krywoj M. S. | 0:2 (4:6, 4:6) | details | 24.03.2023 |
| 1/8-finals | Brancaccio N./Vismane D. | Klaffner M./Kraus S. | 1:2 (2:6, 6:3, 6:10) | details | 21.03.2023 |
| Colombia: W40 Anapoima - Doubles - Main |
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| Semi-finals | Klaffner M./Kraus S. | Khromacheva I./Strakhova V. | 0:2 (0:6, 1:6) | details | 17.03.2023 |
| Quarter-finals | Arango E./Perez Garcia M. P. | Klaffner M./Kraus S. | 1:2 (2:6, 6:1, 7:10) | details | 17.03.2023 |
| 1/8-finals | Klaffner M./Kraus S. | Appleton E./Haverlag I. | 2:0 (6:4, 6:1) | details | 14.03.2023 |
| Germany: W60 Altenkirchen - Doubles - Main |
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| Quarter-finals | Minnen G./Wickmayer Y. | Klaffner M./Kraus S. | 2:0 (6:3, 6:0) | details | 16.02.2023 |
Turkey: W15 Antalya 7 - Singles - Main