# 2021 Sardegna Open – Singles

Lorenzo Sonego defeated defending champion Laslo Đere in the final, 2–6, 7–6$^{(7–5)}$, 6–4 to win the men's singles title at the 2021 Sardegna Open. With the victory, Sonego became the first Italian in 15 years to capture an ATP Tour title on home soil.

## Seeds

The top four seeds received a bye into the second round.
* Dan Evans (second round)
* Taylor Fritz (semifinals)
* Lorenzo Sonego (champion)
* Nikoloz Basilashvili (semifinals)
* Jan-Lennard Struff (quarterfinals)
* John Millman (second round)
* Guido Pella (first round)
* Tommy Paul (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| | Laslo Đere | 6 | 6 | | | | | | |
| 4 | Nikoloz Basilashvili | 2 | 0 | | | | | | |
| 4 | Nikoloz Basilashvili | 2 | 0 | | | Laslo Đere | 6 | 6$^5$ | 4 |
| | | | | | 3 | Lorenzo Sonego | 2 | 7$^7$ | 6 |
| 3 | Lorenzo Sonego | 6 | 5 | 6 | 3 | Lorenzo Sonego | 2 | 7$^7$ | 6 |
| 2 | Taylor Fritz | 4 | 7 | 1 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | D Evans | 1 | 6 | 6$^8$ | | | | | | | | | |
| | L Musetti | 6 | 6 | | | L Musetti | 6 | 1 | 7$^{10}$ | | | | | | | | | |
| | D Novak | 0 | 1 | | | | | | | | L Musetti | 4 | 6 | 2 | | | | |
| WC | F Gaio | 4 | 2 | | | | | | | | L Đere | 6 | 4 | 6 | | | | |
| | L Đere | 6 | 6 | | | L Đere | 6 | 6 | | | | | | | | | | |
| | F Coria | 6$^5$ | 6 | 3 | 6 | J Millman | 3 | 3 | | | | | | | | | | |
| 6 | J Millman | 7$^7$ | 3 | 6 | | | | | | | | | | | | L Đere | 6 | 6 |
| | | | | | | | | | | | | | | | 4 | N Basilashvili | 2 | 0 |
| | | | | | 4 | N Basilashvili | 4 | 6 | 7 | | | | | | | | | |
| Q | S Nagal | 6 | 1 | 3 | Q | J Kovalík | 6 | 4 | 5 | | | | | | | | | |
| Q | J Kovalík | 3 | 6 | 6 | | | | | | 4 | N Basilashvili | 7 | 4 | 6 | | | | |
| Q | M-A Hüsler | 1 | 3 | | | | | | | 5 | J-L Struff | 5 | 6 | 3 | | | | |
| Q | L Broady | 6 | 6 | | Q | L Broady | 4 | 2 | | | | | | | | | | |
| | J Sousa | 6 | 1 | 5 | 5 | J-L Struff | 6 | 6 | | | | | | | | | | |
| 5 | J-L Struff | 1 | 6 | 7 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | T Paul | 6$^8$ | 7 | 3 | | | | | | | | | | | | | | |
| | Y Hanfmann | 7$^{10}$ | 5 | 6 | | Y Hanfmann | 7 | 6 | | | | | | | | | | |
| | M Cecchinato | 6 | 4 | 6 | | M Cecchinato | 5 | 1 | | | | | | | | | | |
| WC | T Fabbiano | 4 | 6 | 3 | | | | | | Y Hanfmann | 6 | 6$^6$ | 3 | | | | | |
| | G Simon | 1 | 6 | 6 | | | | | 3 | L Sonego | 3 | 7$^8$ | 6 | | | | | |
| | S Travaglia | 6 | 3 | 4 | | G Simon | 4 | 1 | | | | | | | | | | |
| | | | | | 3 | L Sonego | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 3 | L Sonego | 6 | 5 | 6 |
| 7 | G Pella | 4 | 0 | | | | | | | | | | | 2 | T Fritz | 4 | 7 | 1 |
| | E Gerasimov | 6 | 6 | | | E Gerasimov | 4 | 6$^5$ | | | | | | | | | | |
| | A Bedene | 1 | 7 | 7$^7$ | | A Bedene | 6 | 7$^7$ | | | | | | | | | | |
| WC | G Zeppieri | 6 | 5 | 6$^3$ | | | | | | A Bedene | 3 | 4 | | | | | | |
| | A Martin | 6 | 2 | 6 | | | | | 2 | T Fritz | 6 | 6 | | | | | | |
| | J Veselý | 4 | 6 | 1 | | A Martin | 2 | 6$^4$ | | | | | | | | | | |
| | | | | | 2 | T Fritz | 6 | 7$^7$ | | | | | | | | | | |

## Qualifying
### Seeds

* Jozef Kovalík (qualified)
* Cedrik-Marcel Stebe (qualifying competition, retired)
* Sumit Nagal (qualified)
* Jurij Rodionov (qualifying competition)
* Brandon Nakashima (first round)
* Marc-Andrea Hüsler (qualified)
* Maxime Cressy (first round)
* Liam Broady (qualified)

### Qualifiers

* Jozef Kovalík
* Marc-Andrea Hüsler
* Sumit Nagal
* Liam Broady

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Jozef Kovalík | 6 | 6 | | | | | | |
| | Malek Jaziri | 3 | 1 | | | | | | |
| | Malek Jaziri | 3 | 1 | | 1 | Jozef Kovalík | 7$^7$ | 4 | 7$^7$ |
| | | | | | | Matteo Viola | 6$^3$ | 6 | 6$^4$ |
| | Matteo Viola | 6$^4$ | 6 | 6 | | Matteo Viola | 6$^3$ | 6 | 6$^4$ |
| 5 | Brandon Nakashima | 7$^7$ | 1 | 2 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Cedrik-Marcel Stebe | 6 | 6 | | | | |
| | Matthew Ebden | 2 | 3 | | | | |
| | Matthew Ebden | 2 | 3 | 2 | Cedrik-Marcel Stebe | 5 | 1$^r$ |
| | | | | 6 | Marc-Andrea Hüsler | 7 | 1 |
| | Teymuraz Gabashvili | 4 | 4 | 6 | Marc-Andrea Hüsler | 7 | 1 |
| 6 | Marc-Andrea Hüsler | 6 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Sumit Nagal | 6 | 6 | | | | |
| | Andrea Pellegrino | 3 | 4 | | | | |
| | Andrea Pellegrino | 3 | 4 | 3 | Sumit Nagal | 6 | 6 |
| | | | | | Maxime Janvier | 2 | 1 |
| | Maxime Janvier | 6 | 6 | | Maxime Janvier | 2 | 1 |
| 7 | Maxime Cressy | 4 | 3 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Jurij Rodionov | 6 | 7$^7$ | | | | | |
| WC | Francesco Forti | 4 | 6$^4$ | | | | | |
| WC | Francesco Forti | 4 | 6$^4$ | 4 | Jurij Rodionov | 5 | 6 | 0 |
| | | | | 8 | Liam Broady | 7 | 4 | 6 |
| WC | Jacopo Berrettini | 4 | 1 | 8 | Liam Broady | 7 | 4 | 6 |
| 8 | Liam Broady | 6 | 6 | | | | | |