Stadium: Court 6 Round: 25 Ground: Clay
| ITF M15 Parnu | 2021/08/07 09:30 | Ergi Kirkin v Roncalli, Simone | 6-1,6-2 |
| ITF M15 Parnu | 2021/08/06 11:00 | Sabanin, Yan v Roncalli, Simone | 1-6,4-6 |
| ITF M15 Parnu | 2021/08/05 07:00 | Goldsteiner, Peter v Roncalli, Simone | 5-7,0-6 |
| ITF M15 Parnu | 2021/08/04 06:50 | Fellin, Manfred v Roncalli, Simone | 0-6,0-6 |
| ITF M25 Casinalbo | 2021/07/07 18:30 | Nikolas Sanchez Izquierdo v Roncalli, Simone | 3-6,6-3,6-2 |
| ITF M25 Casinalbo | 2021/07/06 07:45 | Marcello Serafini v Roncalli, Simone | 2-6,2-6 |
| ITF M15 Bergamo | 2021/06/22 11:45 | Roncalli, Simone v Remy Bertola | 4-6,6-3,8-10 |
| ITF M15 Bergamo | 2021/06/21 09:40 | Roncalli, Simone v Juan Bautista Otegui | 6-3,6-2 |
| Challenger Amersfoort | 2021/07/12 09:00 | Sander Jong v Carlos Sanchez Jover | 6-1,6-4 |
| Challenger Amersfoort | 2021/07/11 10:00 | Esteve Lobato, Eduard v Sander Jong | 2-6,5-7 |
| ITF M25 The Hague | 2021/06/30 12:40 | Sander Jong v Jesper De Jong | 5-7,6-7 |
| ITF M25 Alkmaar | 2021/06/23 16:10 | Kai Wehnelt v Sander Jong | 6-2,7-6 |
| ITF M15 Alkmaar | 2020/08/24 08:00 | van Der Meerschen, Martin v Sander Jong | 6-3,7-6 |
| ITF M15 Alkmaar | 2020/08/23 08:00 | Sander Jong v Pauwels, Maxime | 2-6,6-4,10-8 |