Stadium: Court 1 Round: 44 Ground: Clay
| ITF M25 Lesa | 2021/08/25 12:15 | Pietro Marino v Matteo Martineau | 1-6,4-6 |
| ITF M25 Lesa | 2021/08/23 14:00 | Pietro Marino v Giacomo Crisostomo | 6-2,6-2 |
| ITF M25 Lesa | 2021/08/22 12:10 | Pietro Marino v Alessio Zanotti | 4-6,6-3,11-9 |
| ITF M15 Pescara | 2021/08/16 07:15 | Fausto Tabacco v Pietro Marino | 7-5,6-0 |
| ITF M15 Pescara | 2021/08/15 11:30 | Alberto Morolli v Pietro Marino | 6-7,6-7 |
| ITF M15 Monastir | 2021/08/04 07:30 | Omni Kumar v Pietro Marino | 6-2,6-2 |
| ITF M15 Monastir | 2021/08/03 07:30 | Rishab Agarwal v Pietro Marino | 6-7,3-6 |
| ITF M15 Monastir | 2021/08/02 07:30 | Tadas Tarasevicius v Pietro Marino | 4-6,6-3,7-10 |
| ITF M15 Ulcinj | 2021/08/29 11:30 | Aleksandar Mihailovic v Luca Moro Almeida | 6-0,6-0 |
| ITF M15 Novi Sad | 2021/08/04 10:00 | Juan Pablo Paz v Aleksandar Mihailovic | 6-0,6-1 |
| ITF M15 Doboj | 2021/07/14 08:30 | Felix Gill v Aleksandar Mihailovic | 6-1,6-4 |
| ITF M25 Belgrád | 2021/06/27 12:00 | Nicolas Bruna v Aleksandar Mihailovic | 7-6,6-0 |
| ITF M15 Szarajevó | 2021/06/02 14:05 | Luka Petrovic v Aleksandar Mihailovic | 6-4,6-0 |
| ITF M25 Kiseljak | 2021/05/25 15:25 | Aleksandar Mihailovic v Francesco Forti | 1-6,1-6 |
| ITF M15 Brcko | 2021/05/16 07:00 | Valentin Lapalu v Aleksandar Mihailovic | 6-3,6-4 |