 World: Billie Jean King Cup - Group II - Doubles - Main |
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| | Herdzelas D./Wagner A. | Aziz O./Qostal L. | 1:0 RET. (6:1) | dettagli | 09.04.2024 |
 Morocco: W15 Casablanca 2 - Doubles - Main |
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| Quarter-finals | El Jardi D./Qostal L. | Gureva A./Hietaranta L. | 0:2 (4:6, 5:7) | dettagli | 14.07.2022 |
| 1/8-finals | El Jardi D./Qostal L. | Bachir E. B. I./Diaz Zayas L. | 2:1 (3:6, 6:0, 10:7) | dettagli | 12.07.2022 |
| Morocco: W15 Casablanca - Doubles - Main |
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| 1/8-finals | Bestetti G./Carbonaro G. | Qostal L./Shapovalova A. | 2:0 (6:2, 6:4) | dettagli | 05.07.2022 |
| World: Billie Jean King Cup - Group III - Doubles - Main |
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| | Azziz R./Qostal L. | Lennon Z./Wong Hon Chan S. | 2:0 (6:1, 6:4) | dettagli | 07.06.2022 |
 Portugal: W25 Oeiras - Doubles - Main |
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| 1/8-finals | Masic M./Qostal L. | Fita Boluda A./Murta I. | 0:2 (4:6, 2:6) | dettagli | 12.04.2022 |
| Morocco: W15 Marrakech 2 - Doubles - Main |
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| 1/8-finals | Meliss V./Pfeifer L. | Mayerova M./Qostal L. | 2:0 (6:2, 6:1) | dettagli | 22.03.2022 |
| Morocco: W15 Marrakech - Doubles - Main |
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| Quarter-finals | Delai M./Lovric P. | Aziz O./Qostal L. | 2:0 (6:2, 7:64) | dettagli | 17.03.2022 |
| 1/8-finals | Aziz O./Qostal L. | Brunskog L./Ersoz V. | 2:1 (68:7, 7:67, 10:6) | dettagli | 15.03.2022 |
 Tunisia: W15 Monastir 33 - Doubles - Main |
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| 1/8-finals | Back D./Kawagishi N. | Malik T./Qostal L. | 2:0 (7:65, 6:3) | dettagli | 31.08.2021 |
| Tunisia: W15 Monastir 32 - Doubles - Main |
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| 1/8-finals | Malik T./Qostal L. | Balu S./Chilakalapudi S. S. | 1:2 (6:3, 4:6, 6:10) | dettagli | 24.08.2021 |
| Tunisia: W15 Monastir 31 - Doubles - Main |
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| Quarter-finals | Malik T./Qostal L. | Ortenzi J./Reyngold E. | 0:2 (2:6, 64:7) | dettagli | 19.08.2021 |
| 1/8-finals | Malik T./Qostal L. | Collens B./Vinahradava H. | 2:0 (6:3, 6:0) | dettagli | 17.08.2021 |
| Tunisia: W15 Monastir 30 - Doubles - Main |
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| 1/8-finals | Ben Hassen F./Qostal L. | Singla R./Zelinskaya D. | 1:2 (3:6, 6:2, 12:14) | dettagli | 10.08.2021 |
| Tunisia: W15 Monastir 29 - Doubles - Main |
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| Quarter-finals | Lemaitre T./Parazinskaite A. | Prati F./Qostal L. | 2:0 (6:3, 6:3) | dettagli | 05.08.2021 |
| 1/8-finals | Mummadi V./Pirtac B. L. | Prati F./Qostal L. | 0:2 (2:6, 1:6) | dettagli | 03.08.2021 |
| Tunisia: W15 Monastir 26 - Doubles - Main |
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| Quarter-finals | Lene E./Qostal L. | Koshiishi A./Ozeki M. | 0:2 (3:6, 0:6) | dettagli | 15.07.2021 |
| 1/8-finals | Leclercq A./Morlet G. | Lene E./Qostal L. | 0:2 (65:7, 0:6) | dettagli | 13.07.2021 |
| Morocco: Rabat - Doubles - Main |
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| 1/8-finals | Minnen G./Van Uytvanck A. | Nahimana S./Qostal L. | 2:0 (6:2, 6:3) | dettagli | 30.04.2019 |
| World: Billie Jean King Cup - Group III - Doubles - Placement matches |
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| | Akopyan G./Muradyan I. | Qostal L./Semlali H. | 0:2 (3:6, 2:6) | dettagli | 20.04.2019 |
| World: Billie Jean King Cup - Group III - Doubles - Main |
|---|
| | Abou Zekry O./Sherif Ahmed R. | Qostal L./Semlali H. | 1:1 RET. (3:6, 6:3, 1:0) | dettagli | 19.04.2019 |
| | Atik R./Qostal L. | Dillon R./Lohan S. | 0:2 (5:7, 4:6) | dettagli | 18.04.2019 |
| | Atik R./Qostal L. | Asumwa R./Omurunga F. N. | CAN. | dettagli | 17.04.2019 |
| Morocco: Rabat - Doubles - Main |
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| 1/8-finals | Volodko K./Lepchenko V. | Pous-Tio L./Qostal L. | 2:1 (6:1, 3:6, 11:9) | dettagli | 01.05.2017 |
| Morocco: Marrakech - Doubles - Main |
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| 1/8-finals | Buryachok I./Solovyeva V. | Atik R./Qostal L. | 2:0 (6:1, 6:2) | dettagli | 23.04.2014 |
| Morocco: Marrakech - Doubles - Main |
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| 1/8-finals | Klemenschits S./Klepac A. | Lim A./Qostal L. | 2:0 (6:3, 6:3) | dettagli | 23.04.2013 |
Egypt: W15 Cairo 3 - Singles - Main