Stadium: Court 7 Round: 25 Ground: Clay
| ITF M25 Velenje | 2021/07/06 10:10 | Peter Goldsteiner v Tim Heger | 6-1,6-4 |
| ITF M25 Velenje | 2021/07/05 16:20 | Peter Goldsteiner v Roko Horvat | 7-6,6-4 |
| ITF M15 Sarajevo | 2021/05/31 10:00 | Peter Goldsteiner v Petar Jovanovic | 6-7,4-6 |
| ITF M25 Kiseljak | 2021/05/25 12:40 | Zsombor Piros v Peter Goldsteiner | 6-3,7-5 |
| ITF M15 Sibenik | 2021/05/19 12:20 | Peter Goldsteiner v David Pichler | 3-6,2-6 |
| ITF M15 Sibenik | 2021/05/18 09:35 | Elgin Khoeblal v Peter Goldsteiner | 1-6,5-7 |
| ITF M15 Sibenik | 2021/05/17 14:55 | Federico Marchetti v Peter Goldsteiner | 5-7,0-6 |
| ITF M15 Sibenik | 2021/05/16 15:00 | Alen Moritz Hodzic v Peter Goldsteiner | 6-3,5-7,5-10 |
| ITF M15 Sharm El Sheikh | 2021/02/28 11:00 | Matas Vasiliauskas v Gal Emersic Potocnik | 7-6,6-2 |
| ITF M15 Sharm El Sheikh | 2021/02/22 07:30 | Luca Potenza v Gal Emersic Potocnik | 6-0,6-1 |