Stadium: Court 4 Round: 26 Ground: Clay
| ITF M15 Doboj | 2021/07/14 11:00 | Ronan Joncour v Peter Fajta | 0-6,1-6 |
| ITF M15 Sibenik | 2021/05/21 08:00 | Hernan Casanova v Peter Fajta | 6-2,6-2 |
| ITF M15 Sibenik | 2021/05/20 08:00 | Peter Fajta v David Pichler | 7-6,3-6,6-1 |
| ITF M15 Sibenik | 2021/05/19 13:30 | Luka Mikrut v Peter Fajta | 1-6,0-6 |
| ITF M15 Prijedor | 2021/05/14 08:50 | Denis Yevseyev v Peter Fajta | 1-6,6-1,6-2 |
| ITF M15 Prijedor | 2021/05/13 10:05 | Peter Fajta v Marko Miladinovic | 5-7,6-3,7-6 |
| ITF M15 Antalya | 2021/04/21 10:00 | Peter Fajta v Federico Arnaboldi | 3-6,4-6 |
| ITF M15 Antalya | 2021/04/13 07:00 | Sandro Kopp v Peter Fajta | 6-2,7-6 |
| ITF M15 Doboj | 2021/07/13 11:30 | Frane Nincevic v Christoffer Solberg | 6-2,7-6 |
| ITF M25 Velenje | 2021/07/06 08:00 | Frane Nincevic v Nemanja Malesevic | 4-6,6-1,5-10 |
| ITF M25 Velenje | 2021/07/05 09:00 | Frane Nincevic v Nicolas Bruna | 5-7,7-6,11-9 |
| UTR Pro Tennis Series Zadar | 2021/07/03 07:00 | Vito Tonejc v Frane Nincevic | 6-4,5-2 |
| UTR Pro Tennis Series Zadar | 2021/07/02 12:30 | Josip Krstanovic v Frane Nincevic | 6-4,1-6,7-5 |
| UTR Pro Tennis Series Zadar | 2021/07/01 09:30 | Constant De La Bassetiere v Frane Nincevic | 3-6,2-6 |
| UTR Pro Tennis Series Zadar | 2021/06/29 11:00 | Warren Sinius v Frane Nincevic | 5-7,3-6 |
| UTR Pro Tennis Series Zadar | 2021/06/28 12:30 | Frane Nincevic v Jerko Brkic | 6-1,7-5 |