Stadium: Court 1 Round: 54 Ground: Grass
| 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 |
| ITF M15 Ramat Hasharon | 2021/05/05 11:05 | Gilad Tamar v Luca Castelnuovo | 6-7,4-6 |
| ITF M15 Gaiba | 2021/06/07 16:55 | Osgar O'Hoisin v Riccardo Di Nocera | 5-7,6-2,10-5 |
| ITF M15 Marbella | 2021/05/24 09:00 | John Echeverria v Osgar O'Hoisin | 6-7,6-3,16-14 |
| ITF M15 Monastir | 2021/04/26 08:00 | Osgar O'Hoisin v Harry Wendelken | 6-4,4-6,7-10 |
| ITF M15 Monastir | 2021/04/25 09:00 | Osgar O'Hoisin v Vladimir Cherkovets | 6-2,6-0 |
| ITF M15 Monastir | 2021/04/18 14:00 | Harry Wendelken v Osgar O'Hoisin | 7-6,6-2 |
| ITF M15 Monastir | 2021/04/11 09:00 | Fons Van Sambeek v Osgar O'Hoisin | 6-3,6-2 |
| ITF M15 New Delhi | 2021/03/28 05:00 | Osgar O'Hoisin v Suraj R Prabodh | 6-3,5-7,5-10 |
| ITF M15 Indore | 2021/03/08 08:20 | Madhwin Kamath v Osgar O'Hoisin | 6-3,6-3 |