Stadium: Court 1 Kvarner Round: 62 Ground: Clay
| ITF M15 Opatija | 2021/03/22 13:00 | Giacomo Dambrosi v Yvo Panak | 6-3,6-3 |
| ITF M15 Opatija | 2021/03/21 08:00 | Giacomo Dambrosi v Alessandro Bellifemine | 6-0,6-0 |
| ITF M15 Rovinj | 2021/03/17 10:40 | David Pichler v Giacomo Dambrosi | 1-6,6-3,6-1 |
| ITF M15 Rovinj | 2021/03/16 09:00 | Francesco Maestrelli v Giacomo Dambrosi | 1-6,2-6 |
| ITF M15 Rovinj | 2021/03/15 11:30 | Gianmarco Ferrari v Giacomo Dambrosi | 3-6,2-6 |
| ITF M15 Rovinj | 2021/03/14 08:30 | Alessandro Procopio v Giacomo Dambrosi | 1-6,2-6 |
| ITF M15 Porec | 2021/03/09 10:40 | Federico Arnaboldi v Giacomo Dambrosi | 6-3,6-1 |
| ITF M15 Porec | 2021/03/08 11:30 | Yair Sarouk v Giacomo Dambrosi | 0-6,0-6 |
| 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 M25 Faro | 2021/03/01 13:00 | Peter Goldsteiner v Jordi Mas De Ugarte | 7-5,2-6,4-10 |