 Cyprus: M15 Limassol 2 - Doubles - Main |
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| 1/8-finals | Bladelius H./Trinker J. | Campbell N./Koshis C. | 2:0 (6:3, 6:2) | details | 29.11.2023 |
| Cyprus: M15 Limassol - Doubles - Main |
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| 1/8-finals | Campbell N./Koshis C. | Efstathiou M./Neos E. | 0:2 (3:6, 3:6) | details | 22.11.2023 |
 USA: M15 Norman, OK - Doubles - Main |
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| 1/8-finals | Goldhoff G./Zink T. | Azoides D./Koshis C. | 2:0 (6:4, 6:4) | details | 27.10.2022 |
| USA: M15 Albuquerque, NM - Doubles - Main |
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| 1/8-finals | Diaz Jalil A./Hudd E. | Koshis C./McKennon M. | 2:0 (6:2, 6:4) | details | 27.09.2022 |
| USA: US Open - Doubles - Main |
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| 1/16-finals | Koshis C./van Schalkwyk C. H. | Dietrich D./Prado Angelo J. C. | 1:2 (6:4, 63:7, 7:10) | details | 05.09.2022 |
 France: French Open - Doubles - Main |
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| 1/16-finals | Eriksson S./van Schalkwyk C. H. | Koshis C./Merida Aguilar D. | 2:0 (6:4, 7:5) | details | 30.05.2022 |
 Australia: Australian Open - Doubles - Main |
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| 1/16-finals | Koshis C./Tokac T. | Kuzuhara B./Wong C. | 1:2 (6:2, 62:7, 6:10) | details | 24.01.2022 |
 Spain: M15 Torello - Doubles - Main |
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| 1/8-finals | Brugnerotto M./Sorrentino L. | Butvilas E./Koshis C. | WO. | details | 02.11.2021 |
| Spain: M25 Madrid - Doubles - Main |
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| 1/8-finals | Ortega-Olmedo R./Sanchez Jover C. | Koshis C./Leon Moros D. | 2:0 (6:2, 6:4) | details | 14.09.2021 |
 Turkey: M15 Antalya - Doubles - Main |
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| 1/8-finals | Sijsling I./Smits G. | Fils A./Koshis C. | 2:0 (6:4, 6:2) | details | 07.01.2021 |
United Kingdom: Wimbledon - Singles - Qualification
Egypt: M15 Cairo 6 - Singles - Main