Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| Challenger Sibiu | 2021/09/30 12:35 | Stefan Palosi v Zdeněk Kolář | 5-7,5-7 |
| Challenger Sibiu | 2021/09/28 10:00 | Stefan Palosi v Nicholas David Ionel | 7-5,6-1 |
| Challenger Sibiu | 2021/09/27 07:00 | Kai Wehnelt v Stefan Palosi | 6-7,7-6,2-6 |
| Challenger Bukurešť | 2021/09/21 14:20 | Nicholas David Ionel v Stefan Palosi | 7-6,6-1 |
| ITF M15 Ulcinj | 2021/09/15 09:45 | Andrea Basso v Stefan Palosi | 7-5,7-6 |
| ITF M15 Bratislava | 2021/08/27 09:50 | Stefan Palosi v Danylo Kalenichenko | 4-6,5-7 |
| ITF M15 Bratislava | 2021/08/26 08:00 | Robin Staněk v Stefan Palosi | 3-6,3-6 |
| ITF M15 Bratislava | 2021/08/25 09:25 | Janos Fekete v Stefan Palosi | 3-6,4-6 |
| ITF M15 Sozopol | 2021/10/09 07:00 | Billy Harris v Yan Bondarevskiy | 6-3,3-6,7-6 |
| ITF M15 Sozopol | 2021/10/08 07:00 | Yan Bondarevskiy v Alexander Cozbinov | 1-6,6-2,6-1 |
| ITF M15 Sozopol | 2021/10/07 07:00 | Yan Bondarevskiy v Yannik Steinegger | 6-3,6-4 |
| ITF M15 Sozopol | 2021/10/06 06:45 | Yan Bondarevskiy v George Lazarov | 6-7,6-1,6-3 |
| Challenger Sibiu | 2021/09/30 10:40 | Stefano Travaglia v Yan Bondarevskiy | 6-3,6-2 |
| Challenger Sibiu | 2021/09/28 10:45 | Yan Bondarevskiy v Vlad Andrei Dancu | 6-2,6-3 |
| Challenger Sibiu | 2021/09/27 07:00 | Oleg Prihodko v Yan Bondarevskiy | 6-7,4-6 |
| Challenger Sibiu | 2021/09/26 07:30 | Yan Bondarevskiy v David Poljak | 7-5,3-6,6-3 |