| ITF M15 Antalya | 2021/03/08 10:00 | Stefan Palosi v Simeon Terziev | 6-3,6-0 |
| ITF M15 Antalya | 2021/03/07 07:00 | Thiago Cigarran v Simeon Terziev | 4-6,1-6 |
| ITF M15 Antalya | 2021/02/28 07:00 | Simeon Terziev v Mert Naci Turker | 7-6,4-6,9-11 |
| ITF M15 Antalya | 2021/01/04 07:00 | Jan Sebesta v Simeon Terziev | 6-3,7-6 |
| ITF M15 Antalya | 2021/01/03 07:00 | Simeon Terziev v Kaan Cepel | 6-3,6-4 |
| ITF M15 Antalya | 2020/12/22 06:30 | Michalis Sakellaridis v Simeon Terziev | 6-3,6-1 |
| ITF M15 Antalya | 2020/12/21 10:50 | Simeon Terziev v Svyatoslav Ilnytskyy | 6-4,6-4 |
| ITF M15 Antalya | 2020/12/20 07:00 | Edouard Villoslada v Simeon Terziev | 4-6,2-6 |
| ITF M15 Opatija | 2021/03/23 12:10 | Gergely Madarasz v Mathieu Perchicot | 6-2,3-6,2-6 |
| ITF M15 Rovinj | 2021/03/17 09:00 | Alex Rybakov v Gergely Madarasz | 6-2,6-3 |
| ITF M15 Rovinj | 2021/03/16 14:45 | Samuel Brosset v Gergely Madarasz | 6-7,0-6 |
| ITF M15 Rovinj | 2021/03/15 16:45 | Yvo Panak v Gergely Madarasz | 3-6,6-7 |
| ITF M15 Rovinj | 2021/03/15 08:00 | Kris Krawcewicz v Gergely Madarasz | 4-6,5-7 |
| ITF M15 Porec | 2021/03/11 09:00 | Gergely Madarasz v Alexandar Lazarov | 1-6,3-6 |
| ITF M15 Porec | 2021/03/10 13:30 | Nikita Mashtakov v Gergely Madarasz | 6-3,1-6,2-6 |
| ITF M15 Porec | 2021/03/09 09:00 | Gergely Madarasz v Mattia Frinzi | 7-5,6-3 |