Stadium: Court 3 Round: 54 Ground: Clay
| ITF M15 - Gaiba | 2021/06/08 13:35 | Luca Castelnuovo v Osgar O'Hoisin | 3-6,7-5,8-10 |
| ITF M15 - Gaiba | 2021/06/07 10:00 | Luca Castelnuovo v Gregorio De Gasper | 6-4,6-4 |
| ITF M15 - Kouvola | 2021/05/28 07:15 | Luca Castelnuovo v Naoki Tajima | 3-6,2-6 |
| ITF M15 - Kouvola | 2021/05/27 11:25 | Luca Castelnuovo v Simonas Zukauskas | 6-1,6-3 |
| ITF M15 - Kouvola | 2021/05/26 14:40 | Luca Castelnuovo v Roni Mikael Hietaranta | 6-3,4-6,6-3 |
| ITF M15 - Tbilisi | 2021/05/18 07:00 | Yurii Dzhavakian v Luca Castelnuovo | 7-6,0-6,7-6 |
| ITF M15 - Jerusalem | 2021/05/12 08:15 | Edan Leshem v Luca Castelnuovo | 7-5,7-5 |
| ITF M15 - Ramat Hasharon | 2021/05/06 07:00 | Zane Khan v Luca Castelnuovo | 6-3,6-2 |