Stadium: Court 3 Opatija Round: 27 Ground: Clay
| ITF - Opatija M15 | 2021/03/25 11:50 | Alex Rybakov v Francesco Maestrelli | 6-3,7-5 |
| ITF - Opatija M15 | 2021/03/24 10:30 | Alex Rybakov v Fermin Tenti | 7-6,6-2 |
| ITF - Rovinj M15 | 2021/03/18 10:30 | Alex Rybakov v Andrea Basso | 6-1,2-6,5-7 |
| ITF - Rovinj M15 | 2021/03/17 09:00 | Alex Rybakov v Gergely Madarasz | 6-2,6-3 |
| ITF - Porec M15 | 2021/03/13 09:00 | Filip Misolic v Alex Rybakov | 1-6,6-4,6-3 |
| ITF - Porec M15 | 2021/03/12 09:00 | Sebastian Prechtel v Alex Rybakov | 2-6,2-6 |
| ITF - Porec M15 | 2021/03/11 11:20 | Fermin Tenti v Alex Rybakov | 1-6,2-6 |
| ITF - Porec M15 | 2021/03/10 10:50 | Mauro De Maio v Alex Rybakov | 4-6,2-6 |
| ITF - Opatija M15 | 2021/03/25 09:00 | Damien Wenger v Giacomo Dambrosi | 1-6,3-6 |
| ITF - Opatija M15 | 2021/03/24 10:45 | Giacomo Dambrosi v David Pichler | 3-6,6-1,6-2 |
| ITF - Opatija M15 | 2021/03/23 09:00 | Giacomo Dambrosi v Peter Goldsteiner | 6-3,6-2 |
| ITF - Opatija M15 | 2021/03/22 13:00 | Giacomo Dambrosi v Yvo Panak | 6-3,6-3 |
| ITF - Opatija M15 | 2021/03/21 08:00 | Giacomo Dambrosi v Alessandro Bellifemine | 6-0,6-0 |
| ITF - Rovinj M15 | 2021/03/17 10:40 | David Pichler v Giacomo Dambrosi | 1-6,6-3,6-1 |
| ITF - Rovinj M15 | 2021/03/16 09:00 | Francesco Maestrelli v Giacomo Dambrosi | 1-6,2-6 |
| ITF - Rovinj M15 | 2021/03/15 11:30 | Gianmarco Ferrari v Giacomo Dambrosi | 3-6,2-6 |