 Tunisia: M15 Monastir 14 - Doubles - Main |
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| Quarter-finals | Martin D./Nedelchev N. | Chiu J./Simonsson F. | 1:2 (7:69, 4:6, 14:16) | details | 04.04.2024 |
| 1/8-finals | Carteputreda D. C./Tens D. | Martin D./Nedelchev N. | 0:2 (2:6, 1:6) | details | 02.04.2024 |
 Spain: M15 Les Franqueses del Valles - Doubles - Main |
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| Final | Cooper S./Van Tilburg R. | Kravchenko G./Nedelchev N. | 0:2 (3:6, 2:6) | details | 16.03.2024 |
| Semi-finals | Melero K. A./Pedrico Kravtsov A. | Kravchenko G./Nedelchev N. | 0:2 (4:6, 4:6) | details | 15.03.2024 |
| Quarter-finals | Bueno Gil A./Forcano I. | Kravchenko G./Nedelchev N. | 0:2 (5:7, 4:6) | details | 14.03.2024 |
| 1/8-finals | Markovits M./Torcq B. | Kravchenko G./Nedelchev N. | 0:2 (4:6, 1:6) | details | 13.03.2024 |
| Spain: M15 Torello - Doubles - Main |
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| Quarter-finals | Berti M./Iannaccone F. | Kravchenko G./Nedelchev N. | 2:1 (6:4, 4:6, 10:5) | details | 06.03.2024 |
| 1/8-finals | Markovits M./Naharro D. | Kravchenko G./Nedelchev N. | 0:2 (2:6, 5:7) | details | 05.03.2024 |
| Spain: M15 Villena - Doubles - Main |
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| Quarter-finals | Khoeblal E./Nedelchev N. | Davis J./Summers M. | WO. | details | 22.02.2024 |
| 1/8-finals | Khoeblal E./Nedelchev N. | Marrero D./Mulye D. | 2:0 (6:3, 6:2) | details | 20.02.2024 |
| Spain: M15 Manacor 3 - Doubles - Main |
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| 1/8-finals | Kravchenko G./Nedelchev N. | Butvilas E./Lopez Montagud C. | CAN. | details | 23.01.2024 |
| Spain: M15 Manacor 2 - Doubles - Main |
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| 1/8-finals | Kym J./Soriano Barrera A. | Lopez N./Nedelchev N. | 2:1 (5:7, 6:3, 10:5) | details | 16.01.2024 |
 Greece: M25 Heraklion 3 - Doubles - Main |
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| Final | Sakellaridis D./Sakellaridis M. | Genov A./Nedelchev N. | 0:2 (2:6, 1:6) | details | 02.12.2023 |
| Semi-finals | Genov A./Nedelchev N. | Goldenberg L./Shimanov O. | 2:1 (6:2, 64:7, 10:6) | details | 01.12.2023 |
| Quarter-finals | Kimhi O./Vales A. | Genov A./Nedelchev N. | 1:2 (4:6, 6:1, 1:10) | details | 30.11.2023 |
| 1/8-finals | Polichronopoulos A./Vasilakis E. | Genov A./Nedelchev N. | 0:2 (4:6, 5:7) | details | 29.11.2023 |
| Greece: M15 Heraklion 6 - Doubles - Main |
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| Quarter-finals | Oberleitner N./Schwaerzler J. J. | Nedelchev N./Zhu M. | 2:0 (6:2, 6:2) | details | 24.11.2023 |
| 1/8-finals | Nedelchev N./Zhu M. | Kypriotis E./Valaris G. | 2:0 (6:2, 6:1) | details | 22.11.2023 |
| Greece: M15 Heraklion 5 - Doubles - Main |
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| 1/8-finals | Nedelchev N./Zhu M. | Oberleitner N./Schwaerzler J. J. | 0:2 (4:6, 5:7) | details | 15.11.2023 |
| Spain: M25 Zaragoza - Doubles - Main |
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| 1/8-finals | Iamachkine P./Martin Manzano J. C. | Nedelchev N./Stepanian A. | 2:0 (6:3, 6:4) | details | 03.10.2023 |
| Spain: M25 Sabadell 2 - Doubles - Main |
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| 1/8-finals | Alcala Gurri M./Lopez Morillo I. | Nedelchev N./Stepanian A. | 2:0 (6:4, 6:4) | details | 26.09.2023 |
| Tunisia: M15 Monastir 31 - Doubles - Main |
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| Final | Nedelchev N./Zhu M. | Pearson K./Rubio Fierros A. F. | 0:2 (65:7, 4:6) | details | 05.08.2023 |
| Semi-finals | Bouquier A./Herrmann T. | Nedelchev N./Zhu M. | 1:2 (5:7, 7:5, 5:10) | details | 04.08.2023 |
Hungary: M15 Budapest 2 - Singles - Main