Stadium: Central Round: 28 Ground: Hardcourt indoor
| Challenger Biella MD | 2021/05/07 10:00 | Gornes/Sitak v Matos/M R Alves | 2-6,2-6 |
| Challenger Biella MD | 2021/05/06 15:10 | Margaroli/Shamasdin v Gornes/Sitak | 1-6,6-7 |
| Challenger Biella MD | 2021/05/05 15:00 | Mayer/Varillas v Gornes/Sitak | 3-6,6-7 |
| Challenger Lugano MD | 2021/03/26 11:00 | Begemann/Vavassori v Gornes/Sitak | 7-5,6-1 |
| Challenger Lugano MD | 2021/03/25 13:00 | Gornes/Sitak v Polmans/Vukic | 1-6,6-3,17-15 |
| Challenger Lugano MD | 2021/03/24 17:15 | Gornes/Sitak v Sels/Van Rijthoven | 6-4,5-7,10-6 |