Stadium: Court 6 Round: 62 Ground: Clay
| ITF M25 Trimbach | 2021/03/08 11:05 | Kaj Quirijns v Johann Lars | 3-6,6-7 |
| ITF M15 Bad Waltersdorf | 2021/08/22 07:00 | Niklas Rohrer v Luca Castagnola | 6-7,6-2,10-7 |
| ITF M15 Pescara | 2021/08/15 11:30 | Luca Castagnola v Alessandro Ragazzi | 2-6,7-5,10-12 |
| ITF M25 Bolzano | 2021/08/03 16:20 | Marco Bortolotti v Luca Castagnola | 6-1,3-6,6-2 |
| ITF M25 Bolzano | 2021/08/02 13:15 | Igor Solomatin v Luca Castagnola | 6-7,2-6 |
| ITF M25 Bolzano | 2021/08/02 07:00 | Nicolo Pozzani v Luca Castagnola | 4-6,6-2,8-10 |
| ITF M15 Antalya | 2021/06/01 09:30 | Giovanni Fonio v Luca Castagnola | 6-1,1-6,7-6 |
| ITF M15 Antalya | 2021/05/23 07:00 | Daniil Glinka v Luca Castagnola | 6-3,3-6,10-5 |
| ITF M15 Monastir | 2021/05/10 13:30 | Luca Castagnola v Omni Kumar | 6-7,2-6 |