 Bulgaria: M15 Sofia - Doubles - Main |
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| Quarter-finals | Grevelius E./Heinonen A. | Milushev P./Terziev S. | 2:0 (6:2, 6:4) | details | 08.07.2023 |
| 1/8-finals | Milushev P./Terziev S. | Efstathiou M./Kyratzis S. | 2:0 (6:3, 7:5) | details | 05.07.2023 |
| Bulgaria: M15 Pazardzhik - Doubles - Main |
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| 1/8-finals | Markov V./Terziev S. | Donev G./Ivanov S. A. | 0:1 RET. (3:6, 1:3) | details | 16.05.2023 |
| Bulgaria: M15 Sozopol 3 - Doubles - Main |
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| Quarter-finals | Milev Y./Nesterov P. | Milushev P./Terziev S. | 2:1 (5:7, 7:68, 11:9) | details | 20.10.2022 |
| 1/8-finals | Milushev P./Terziev S. | Altuna T./Pawelski M. | 2:1 (6:2, 3:6, 10:8) | details | 18.10.2022 |
| Bulgaria: M15 Sozopol - Doubles - Main |
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| 1/8-finals | Kasnikowski M./Pieczkowski O. | Skorilas A./Terziev S. | 2:0 (7:5, 6:2) | details | 04.10.2022 |
| Bulgaria: M15 Sofia - Doubles - Main |
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| Quarter-finals | Nesterov P./Terziev S. | Donev G./Ivanov S. A. | 1:2 (6:2, 1:6, 5:10) | details | 07.07.2022 |
| 1/8-finals | Nesterov P./Terziev S. | Carnevalle L./Falabella L. A. | 2:1 (6:4, 2:6, 10:7) | details | 05.07.2022 |
 Croatia: M25 Osijek - Doubles - Main |
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| Quarter-finals | Bielinskyi V./Terziev S. | Mikrut L./Poljicak M. | WO. | details | 19.05.2022 |
| 1/8-finals | Cikojevic A./Gajic A. | Bielinskyi V./Terziev S. | 0:2 (4:6, 4:6) | details | 17.05.2022 |
 Turkey: M15 Antalya 9 - Doubles - Main |
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| Quarter-finals | Bondarevskiy Y./Prihodko O. | Kirci K./Terziev S. | 2:0 (6:3, 6:3) | details | 07.04.2022 |
| 1/8-finals | Khoeblal E./Van Baal A. J. W. | Kirci K./Terziev S. | 0:2 (3:6, 2:6) | details | 06.04.2022 |
| Bulgaria: M15 Sozopol 2 - Doubles - Main |
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| 1/8-finals | Nesterov P./Terziev S. | Donski A./Harris B. | 0:2 (4:6, 4:6) | details | 06.10.2021 |
| Bulgaria: M15 Sozopol - Doubles - Main |
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| Semi-finals | Milushev P./Terziev S. | Luncanu P./Wehnelt K. | 1:2 (6:4, 65:7, 6:10) | details | 17.09.2021 |
| Quarter-finals | Milushev P./Terziev S. | Apostol B. I./Manda C. | 2:0 (7:67, 6:4) | details | 16.09.2021 |
| 1/8-finals | Milushev P./Terziev S. | Milev Y./Penev I. | 2:1 (7:5, 67:7, 10:5) | details | 15.09.2021 |
| Bulgaria: M15 Sofia - Doubles - Main |
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| 1/8-finals | Sakellaridis S./Terziev S. | Frinzi M./Sheyngezikht L. | 1:2 (6:4, 4:6, 7:10) | details | 06.07.2021 |
| Turkey: M15 Antalya - Doubles - Main |
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| Final | Harris B./Sabanin Y. | Milushev P./Terziev S. | 2:0 (7:65, 6:0) | details | 10.01.2021 |
| Semi-finals | Cachin P./Hamou M. | Milushev P./Terziev S. | 0:2 (2:6, 0:6) | details | 09.01.2021 |
| Quarter-finals | Tashbulatov D./Zima L. | Milushev P./Terziev S. | 0:2 (4:6, 4:6) | details | 09.01.2021 |
| 1/8-finals | Milushev P./Terziev S. | Galoppini D./Shevchenko A. | 2:0 (7:65, 6:4) | details | 06.01.2021 |
Romania: M25 Pitesti - Singles - Main