 Bulgaria: M25 Pazardzhik 2 - Doubles - Main |
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| 1/8-finals | Ivanov M./Kolyachev N. | Donev G./Ivanov S. A. | 0:2 (3:6, 0:6) | details | 04.10.2023 |
| Bulgaria: M25 Pazardzhik - Doubles - Main |
|---|
| 1/8-finals | Khorozov M./Milev Y. | Kolyachev N./Manukyan V. | 2:0 (6:4, 6:4) | details | 26.09.2023 |
| Bulgaria: M15 Sofia - Doubles - Main |
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| 1/8-finals | Dimitrov V./Kolyachev N. | Donev G./Ivanov S. A. | 0:2 (3:6, 5:7) | details | 04.07.2023 |
| Bulgaria: M15 Sozopol - Doubles - Main |
|---|
| 1/8-finals | Keremedchiev N./Kolyachev N. | Balzerani R./Kellovsky D. | 0:2 (2:6, 4:6) | details | 04.10.2022 |
 Romania: M15 Craiova - Doubles - Main |
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| 1/8-finals | Gheorghita S./Kolyachev N. | Markovski O./Srbljak G. | 0:2 (1:6, 4:6) | details | 17.08.2022 |
| Bulgaria: M15 Sofia - Doubles - Main |
|---|
| Semi-finals | Galarza J. I./Lipovsek Puches T. | Dimitrov V./Kolyachev N. | 2:0 (6:2, 6:0) | details | 08.07.2022 |
| Quarter-finals | Duran T./Kirci K. | Dimitrov V./Kolyachev N. | 0:2 (4:6, 68:7) | details | 07.07.2022 |
| 1/8-finals | Durguti B./Jotovski T. | Dimitrov V./Kolyachev N. | 1:2 (1:6, 6:3, 5:10) | details | 05.07.2022 |
