Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Zlatibor | 2021/09/17 08:00 | Gergely Madarasz v Peter Nagy | 6-3,6-7,7-5 |
| ITF M15 Zlatibor | 2021/09/16 08:00 | Lukas Palovic v Peter Nagy | 3-6,3-6 |
| ITF M15 Zlatibor | 2021/09/15 08:00 | Petar Teodorovic v Peter Nagy | 4-6,2-6 |
| ITF M15 Bad Waltersdorf | 2021/08/25 11:00 | Gabriel Decamps v Peter Nagy | 6-2,6-2 |
| ITF M15 Bratislava | 2021/08/17 10:30 | Peter Nagy v Marat Sharipov | 1-6,2-6 |
| ITF M15 Novi Sad | 2021/08/04 10:00 | Gorazd Srbljak v Peter Nagy | 3-6,6-4,7-5 |
| ITF M15 Novi Sad | 2021/07/30 10:20 | Filip Misolic v Peter Nagy | 6-3,6-3 |
| ITF M15 Novi Sad | 2021/07/29 09:00 | Pedro Boscardin Dias v Peter Nagy | 6-7,7-5,2-6 |
| ITF M15 Ulcinj | 2021/09/22 10:00 | Frane Nincevic v Rrezart Cungu | 3-6,3-6 |
| ITF M15 Ulcinj | 2021/09/13 08:00 | Frane Nincevic v Stefano Reitano | 6-2,4-6,5-10 |
| ITF M15 Bratislava | 2021/08/19 07:55 | Jan Satral v Frane Nincevic | 6-1,6-1 |
| ITF M15 Bratislava | 2021/08/18 08:00 | Frane Nincevic v Andrej Krajcik | 6-3,6-4 |
| ITF M15 Bratislava | 2021/08/16 10:30 | Frane Nincevic v Vitalii Shcherba | 6-2,7-5 |
| ITF M15 Novi Sad | 2021/08/01 09:30 | Frane Nincevic v Aleksandar Tomas | 6-4,3-6,6-10 |
| ITF M15 Doboj | 2021/07/15 08:00 | Peter Fajta v Frane Nincevic | 4-6,6-3,7-6 |
| ITF M15 Doboj | 2021/07/13 11:30 | Frane Nincevic v Christoffer Solberg | 6-2,7-6 |