| Ostrava Challenger | 04/24/21 |
| Roma 2 Challenger | 04/24/21 |
| Salinas 2 Challenger | 04/25/21 |
| Las Palmas de Gran Canaria Futures | 04/25/21 |
| Masters 1000 Madrid | 04/25/21 |
| Barcellona ATP 500 | 04/19/21 |
| Belgrado ATP 250 | 04/19/21 |
| Salinas Challenger | 04/19/21 |
| Tallahassee Challenger | 04/19/21 |
| Roma Challenger | 04/19/21 |
| Sibenik Futures | 04/19/21 |
| Monaco ATP 250 | 04/26/21 |
| Estoril ATP 250 | 04/26/21 |
| VIRTUAL DAVIS CUP 2021 | 05/03/21 |
| Category | ATP World Tour 250 series |
| Name | Cagliari ATP 250 |
| Drawsize | 32 |
| Round number | 5 |
| On date | 04/05/21 00:00 |
| Registration date | 03/23/21 00:00 |
| End registration date | 03/28/21 14:00 |
| Phase | Registration closed. |
| Qualification Tourn | Click Here |
| R32 | R16 | Quarter Finals |
Semi Finals |
Final |
|---|---|---|---|---|
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| Tourn Points | Provisional Entry List | Official Entry List | Round 32 | Round 16 | Quarter-finals | Semi-finals | Finals |