Stadium: Court 5 Round: 62 Ground: Clay
| ITF M15 Opatija | 2021/03/23 09:00 | Giacomo Dambrosi v Peter Goldsteiner | 6-3,6-2 |
| ITF M15 Opatija | 2021/03/22 08:00 | Mate Voros v Peter Goldsteiner | 2-6,5-7 |
| ITF M15 Opatija | 2021/03/21 08:00 | Anze Arh v Peter Goldsteiner | 6-0,2-6,6-10 |
| ITF M15 Rovinj | 2021/03/15 08:00 | Peter Goldsteiner v Gorazd Srbljak | 3-6,4-6 |
| ITF M25 Vale Do Lobo | 2021/03/10 11:30 | Peter Goldsteiner v Goncalo Falcao | 2-6,3-6 |
| ITF M25 Vale Do Lobo | 2021/03/09 11:35 | Peter Goldsteiner v Adrien Gobat | 6-4,6-0 |
| ITF M25 Vale Do Lobo | 2021/03/08 11:00 | Peter Goldsteiner v Francisco Faria | 4-6,6-3,10-5 |
| ITF M25 Vale Do Lobo | 2021/03/07 12:00 | Peter Goldsteiner v Diogo Morais | 6-3,6-1 |
| ITF M15 Sibenik | 2021/04/18 08:00 | Lovre Erceg v Roko Horvat | 6-2,3-6,10-7 |