Stadium: Court 03 Round: 25 Ground: Clay
| ITF M15 Prijedor | 2021/05/09 12:30 | Matic Spec v Luka Miklavcic | 3-6,6-3,8-10 |
| ITF M15 St Petersburg | 2021/04/17 09:45 | Matic Spec v Yanki Erel | 6-7,2-6 |
| ITF M15 St Petersburg | 2021/04/16 07:55 | Matic Spec v Alexey Zakharov | 6-2,6-4 |
| ITF M15 St Petersburg | 2021/04/15 07:00 | Jakub Paul v Matic Spec | 6-7,6-4,3-6 |
| ITF M15 St Petersburg | 2021/04/14 09:15 | Matic Spec v Alafia Ayeni | 6-3,6-4 |
| ITF M15 St Petersburg | 2021/04/12 10:15 | Matic Spec v Daniel Ibragimov | 6-1,6-1 |
| ITF M15 St Petersburg Qual | 2021/04/11 07:00 | Matic Spec v Maksim Starostin | 6-3,6-2 |
| ITF M15 St Petersburg | 2021/04/08 09:00 | Matic Spec v Aristarkh Safonov | 3-6,5-7 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Simon A Ivanov v Lorenzo Vatteroni | 6-1,6-2 |
| ITF M15 Tbilisi | 2021/05/18 05:30 | Julian Cash v Lorenzo Vatteroni | 6-2,6-3 |
| ITF M15 Jerusalem | 2021/05/09 08:30 | Reese Stalder v Lorenzo Vatteroni | 6-2,6-2 |
| ITF M15 Ramat Hasharon | 2021/05/05 08:20 | Edan Leshem v Lorenzo Vatteroni | 6-1,6-2 |
| ITF M15 Ramat Hasharon | 2021/05/04 07:00 | Igor Smilansky v Lorenzo Vatteroni | 2-6,6-3,6-10 |
| ITF M15 Ramat Hasharon | 2021/05/03 07:00 | Lorenzo Vatteroni v Patrick Foley | 4-6,7-5,10-5 |
| ITF M15 Ramat Hasharon | 2021/05/02 07:00 | Lorenzo Vatteroni v Emmanuel Luria | 6-3,6-3 |
| ITF M15 Cairo | 2021/04/18 09:30 | Luigi Sorrentino v Lorenzo Vatteroni | 6-3,7-5 |