Stadium: Court 1 Opatija Round: 25 Ground: Clay
| ITF M15 Rovinj | 2021/03/20 11:40 | Giovanni Fonio v Martin Damm | 6-4,3-6,6-7 |
| ITF M15 Rovinj | 2021/03/19 12:00 | Andrea Basso v Giovanni Fonio | 6-7,1-6 |
| ITF M15 Rovinj | 2021/03/18 10:35 | Mili Poljicak v Giovanni Fonio | 3-6,2-6 |
| ITF M15 Rovinj | 2021/03/16 10:00 | Giovanni Fonio v Zsombor Piros | 6-3,6-3 |
| ITF M15 Porec | 2021/03/09 14:10 | Giovanni Fonio v Pietro Rondoni | 1-6,6-3,3-6 |
| ITF M15 Antalya | 2021/02/20 06:55 | Giovanni Fonio v Pedro Cachin | 7-6,4-6,2-6 |
| ITF M15 Antalya | 2021/02/19 07:00 | Giovanni Fonio v David Pichler | 3-6,6-2,6-3 |
| ITF M15 Antalya | 2021/02/18 11:30 | Giovanni Fonio v Joao Lucas Reis da Silva | 6-4,2-6,7-5 |
| ITF M15 Rovinj | 2021/03/15 14:10 | Juan Bautista Otegui v Kristijan Juhas | 0-6,2-6 |
| ITF M15 Porec | 2021/03/07 12:00 | Juan Bautista Otegui v Samuel Brosset | 4-6,6-1,3-10 |
| UTR Pro Tennis Series Barcelona | 2021/01/31 09:00 | Bruno P Navarro v Juan Bautista Otegui | 3-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/01/30 11:00 | Juan Bautista Otegui v Oriol Roca Batalla | 7-5,4-0 |
| UTR Pro Tennis Series Barcelona | 2021/01/28 12:00 | Nikolas Sanchez Izquierdo v Juan Bautista Otegui | 7-5,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/01/27 13:30 | Francesco Vilardo v Juan Bautista Otegui | 0-6,0-2 |
| UTR Pro Tennis Series Barcelona | 2021/01/25 09:00 | Inaki Cabrera Bello v Juan Bautista Otegui | 0-6,0-6 |
| ITF M15 Cairo | 2021/01/18 08:00 | Simon Beaupain v Juan Bautista Otegui | 6-4,6-4 |