Stadium: C6 Aterno Gas&Power Round: 44 Ground: Clay
| ITF M15 L'Aquila | 2021/07/11 11:00 | Ortega, Pedro v Luigi Castelletti | 3-6,3-6 |
| ITF M15 Almada | 2021/07/07 12:15 | Noskin, Egor v Luigi Castelletti | 6-7,7-5,6-1 |
| ITF M15 Almada | 2021/07/05 10:00 | Harry Wendelken v Luigi Castelletti | 6-0,6-0 |
| ITF M15 Gaiba | 2021/06/09 12:50 | Benjamin Lock v Luigi Castelletti | 6-1,6-3 |
| ITF - M15 Bucarest | 2021/05/23 15:00 | Simon Beaupain v Luigi Castelletti | 6-1,6-2 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/05/16 07:30 | Adan Freire Da Silva v Luigi Castelletti | 4-6,6-4,10-3 |
| ITF M15 Valldoreix | 2021/05/09 12:00 | Nicolas Alvarez Varona v Luigi Castelletti | 6-2,7-6 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/04/20 08:00 | Goldsteiner, Peter v Luigi Castelletti | 7-5,1-6,12-10 |
| ITF M15 L'Aquila | 2021/07/11 11:00 | Biagio Gramaticopolo v Procopio, Alessandro | 4-6,2-6 |
| ITF M15 Sofia | 2021/07/04 07:30 | Franco Roncadelli v Procopio, Alessandro | 6-2,6-3 |
| ITF M25 Wroclaw | 2021/06/28 11:00 | Procopio, Alessandro v Illya Beloborodko | 2-6,4-6 |
| ITF M25 Wroclaw | 2021/06/27 15:30 | Procopio, Alessandro v Caspar Schuetze | 6-3,3-6,10-5 |
| ITF - M15 Opatija | 2021/03/21 08:00 | Peter Bertran v Procopio, Alessandro | 6-3,6-1 |
| ITF - M15 Rovinj | 2021/03/14 08:30 | Procopio, Alessandro v Dambrosi, Giacomo | 1-6,2-6 |
| ITF - M15 Porec | 2021/03/07 14:30 | Procopio, Alessandro v de Maio, Mauro | 2-6,6-4,8-10 |
| ITF - M15 Monastir | 2020/02/03 08:30 | Procopio, Alessandro v Cabral, Francisco | 3-6,4-6 |