 Turkey: M15 Antalya 31 - Doubles - Main |
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| 1/8-finals | Apostol B. I./Manda C. | Opitz J./Steiner M. | 0:2 (4:6, 1:6) | details | 09.11.2021 |
| Turkey: M15 Antalya 28 - Doubles - Main |
|---|
| Quarter-finals | Minarik K./Palovic L. | Apostol B. I./Manda C. | 2:0 (6:4, 6:0) | details | 21.10.2021 |
| 1/8-finals | Abibsi A./Turknas D. | Apostol B. I./Manda C. | 0:2 (0:6, 4:6) | details | 20.10.2021 |
| Turkey: M15 Antalya 27 - Doubles - Main |
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| 1/8-finals | Akkoyun U./Turker M. N. | Apostol B. I./Manda C. | 2:0 (6:4, 6:4) | details | 12.10.2021 |
 Bulgaria: M15 Sozopol - Doubles - Main |
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| Quarter-finals | Milushev P./Terziev S. | Apostol B. I./Manda C. | 2:0 (7:67, 6:4) | details | 16.09.2021 |
| 1/8-finals | Biagiotti R./Schuetze C. | Apostol B. I./Manda C. | 0:2 (4:6, 4:6) | details | 15.09.2021 |
| 1/8-finals | Dinev D./Nedelchev N. | Apostol B. I./Manda C. | CAN. | details | 15.09.2021 |
 Romania: M25 Pitesti - Doubles - Main |
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| 1/8-finals | Apostol B. I./Manda C. | Marinescu M. R./Papoe R. M. | CAN. | details | 04.08.2021 |
 Austria: M25 Kottingbrunn - Doubles - Main |
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| Quarter-finals | Apostol B. I./Manda C. | Karol M./Pokorny L. | 0:2 (67:7, 4:6) | details | 22.07.2021 |
| 1/8-finals | Apostol B. I./Manda C. | Emesz B./Nareyka B. M. | 2:1 (6:3, 65:7, 10:5) | details | 21.07.2021 |
| Austria: M25 Telfs - Doubles - Main |
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| 1/8-finals | Apostol B. I./Manda C. | Bachmaier P./Goldsteiner P. | 1:2 (6:3, 3:6, 7:10) | details | 15.07.2021 |
 Slovakia: M15 Poprad - Doubles - Main |
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| 1/8-finals | Apostol B. I./Manda C. | Ovcharenko O./Uzhylovskyi V. | 0:2 (4:6, 64:7) | details | 07.07.2021 |
