Stadium: Tenis Club Crvena Zvezda - Court 03 Ground: Clay
Referee:
| Challenger Bad Waltersdorf | 2025/09/15 08:11 | Zdenek Kolar v Nikita Mashtakov | 6-2,6-2 |
| Challenger Targu Mures | 2025/09/08 08:00 | Cezar Cretu v Nikita Mashtakov | 6-4,5-7,6-1 |
| Challenger Targu Mures | 2025/09/07 08:00 | Lawrence Bataljin v Nikita Mashtakov | 1-6,4-6 |
| ITF M25 Poznan | 2025/08/26 11:30 | Matthew William Donald v Nikita Mashtakov | 6-2,6-1 |
| ITF M15 Krakow | 2025/08/22 08:30 | Nikita Mashtakov v Alec Beckley | 6-3,4-6,5-7 |
| ITF M15 Krakow | 2025/08/21 10:40 | Nikita Mashtakov v Fryderyk Lechno-Wasiutynski | 7-6,6-3 |
| ITF M15 Krakow | 2025/08/19 11:55 | Nikita Mashtakov v Aleksander Orlikowski | 6-2,6-3 |
| Challenger Sofia | 2025/08/10 08:50 | Olle Wallin v Nikita Mashtakov | 4-6,6-1,6-3 |
| ITF M15 Kursumlijska Banja | 2025/09/18 11:15 | Marko Maksimovic v Valentin Guadagno | 6-2,7-6 |
| ITF M15 Kursumlijska Banja | 2025/09/17 08:30 | Federico Valle v Valentin Guadagno | 5-7,7-6,4-6 |
| ITF M15 Kursumlijska Banja | 2025/09/16 06:00 | Alexander Wagner v Valentin Guadagno | 7-5,6-0 |
| ITF M25 Lausanne | 2025/09/03 11:30 | Adan Freire Da Silva v Valentin Guadagno | 6-4,6-3 |
| ITF M25 Lausanne | 2025/09/02 13:39 | Valentin Guadagno v Matteo Liusso | 6-4,6-2 |
| ITF M25 Sion | 2025/08/26 09:00 | Valentin Guadagno v Timofey Stepanov | 2-6,3-6 |
| ITF M25 Sion | 2025/08/25 09:30 | Valentin Guadagno v Edouard Aubert | 4-6,4-6 |
| UTR Pro Beograd | 2025/08/17 12:15 | Valentin Guadagno v Mark Kneiss | 6-4,7-5 |