Stadium: Gencom Round: 19 Ground: Clay
| Challenger Forli | 2022/01/02 16:10 | Adrian Andreev v Vladyslav Manafov | 6-3,6-2 |
| ATP Sofia | 2021/09/27 15:00 | Miomir Kecmanovic v Adrian Andreev | 7-6,6-4 |
| Challenger - Istanbul | 2021/09/13 07:30 | Adrian Andreev v Laurent Lokoli | 1-6,4-6 |
| Challenger - Istanbul | 2021/09/12 08:00 | Adrian Andreev v Alexander Cozbinov | 6-4,6-4 |
| Challenger - Sevilla | 2021/09/08 20:05 | Roberto Carballes Baena v Adrian Andreev | 6-4,6-1 |
| Challenger - Sevilla | 2021/09/06 19:00 | Roberto Ortega-Olmedo v Adrian Andreev | 6-7,0-6 |
| Challenger Luedenscheid | 2021/08/15 11:00 | Matteo Martineau v Adrian Andreev | 6-4,7-5 |
| Challenger - Praha | 2021/08/10 11:45 | Adrian Andreev v Nino Serdarusic | 3-6,3-6 |
| Challenger Antalya | 2021/12/10 07:00 | Alexandar Lazarov v Evgeny Tyurnev | 4-6,7-6,1-6 |
| Challenger Antalya | 2021/12/09 07:00 | Andrey Chepelev v Alexandar Lazarov | 2-6,0-6 |
| Challenger Antalya | 2021/12/08 11:20 | Alexandar Lazarov v Marsel Ilhan | 6-3,6-3 |
| Challenger Manama | 2021/11/25 11:30 | Alexandar Lazarov v Nerman Fatic | 6-3,7-6 |
| Challenger Manama | 2021/11/23 11:20 | Altug Celikbilek v Alexandar Lazarov | 2-6,3-6 |
| Challenger Manama | 2021/11/22 08:00 | Johannes Haerteis v Alexandar Lazarov | 3-6,6-7 |
| Challenger Manama | 2021/11/21 10:00 | Alexander Cozbinov v Alexandar Lazarov | 1-6,2-6 |
| Challenger - Bratislava | 2021/11/07 15:55 | Alexandar Lazarov v Alexander Shevchenko | 6-4,5-7,3-6 |