Stadium: Court 7 Round: 62 Ground: Clay
| ITF M25 Skopje | 2021/09/27 12:40 | Jotovski, Tomislav v Luca Castagnola | 0-6,4-6 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/22 09:30 | Luca Castagnola v Dominik Palan | 0-6,2-6 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/21 09:15 | Luca Castagnola v Rajic, Dusan | 7-6,6-1 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/20 08:00 | Dusan Obradovic v Luca Castagnola | 3-6,5-7 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/19 07:00 | Luca Castagnola v Daljev, Pavle | 6-4,6-1 |
| ITF M15 Bad Waltersdorf | 2021/08/31 08:20 | Leonardo Taddia v Luca Castagnola | 6-2,4-6,10-6 |
| ITF M15 Bad Waltersdorf | 2021/08/30 09:00 | Kaj Quirijns v Luca Castagnola | 2-6,4-6 |
| ITF M15 Bad Waltersdorf | 2021/08/22 07:00 | Rohrer, Niklas v Luca Castagnola | 6-7,6-2,10-7 |
| ITF M25 Skopje | 2021/09/27 14:15 | Bojan Radoman v Suntic, Sabit | 2-6,1-6 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/20 08:00 | Nicolas Parizzia v Suntic, Sabit | 6-4,6-2 |
| ITF M15 Novi Sad | 2021/08/02 08:00 | Suntic, Sabit v Roko Horvat | 1-6,1-6 |
| ITF M15 Novi Sad | 2021/08/01 08:30 | Daniil Savelev v Suntic, Sabit | 7-5,1-6,4-10 |
| ITF M15 Novi Sad | 2021/07/25 07:00 | Bhullard, Rana-Roop Singh v Suntic, Sabit | 7-6,6-4 |
| ITF - M15 Doboj | 2021/07/12 09:30 | Danijal Muminovic v Suntic, Sabit | 6-0,6-2 |
| ITF - M15 Doboj | 2021/07/11 08:15 | Suntic, Sabit v Andreja Petrovic | 5-7,6-2,10-7 |
| ITF - M15 Antalya | 2021/06/27 06:30 | Suntic, Sabit v Samuil Konov | 4-6,3-6 |