# 2021 Emilia-Romagna Open – Men's singles

This was the third edition of the tournament, primarily created due to the one-week delay of the 2021 French Open.
Sebastian Korda won his first ATP Tour singles title, defeating Marco Cecchinato in the final, 6–2, 6–4 without dropping a set. By winning the tournament, Korda became the first American male tennis player to win on European clay since Sam Querrey in 2010.

## Seeds

The top four seeds receive a bye into the second round.
* Lorenzo Sonego (second round)
* Benoît Paire (second round, retired)
* Albert Ramos Viñolas (second round)
* Jan-Lennard Struff (quarterfinals)
* Richard Gasquet (quarterfinals)
* Tommy Paul (semifinals)
* Aljaž Bedene (second round)
* Yoshihito Nishioka (quarterfinals)

## 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 |
| | Sebastian Korda | 6 | 6 | | | | | |
| 6 | Tommy Paul | 3 | 3 | | | | | |
| 6 | Tommy Paul | 3 | 3 | | | Sebastian Korda | 6 | 6 |
| | | | | | WC | Marco Cecchinato | 2 | 4 |
| WC | Marco Cecchinato | 7$^7$ | 1 | 6 | WC | Marco Cecchinato | 2 | 4 |
| | Jaume Munar | 6$^2$ | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | L Sonego | 1 | 5 | | | | | | | | | |
| WC | A Seppi | 3 | 4 | | | S Korda | 6 | 7 | | | | | | | | | |
| | S Korda | 6 | 6 | | | | | | | | S Korda | 6 | 6 | | | | |
| | G Mager | 6 | 1 | 2 | | | | | | 8 | Y Nishioka | 3 | 3 | | | | |
| | L Musetti | 4 | 6 | 6 | | L Musetti | 3 | 2 | | | | | | | | | |
| | S Querrey | 6 | 3 | 6$^3$ | 8 | Y Nishioka | 6 | 6 | | | | | | | | | |
| 8 | Y Nishioka | 3 | 6 | 7$^7$ | | | | | | | | | | | S Korda | 6 | 6 |
| | | | | | | | | | | | | | | 6 | T Paul | 3 | 3 |
| | | | | | 4 | J-L Struff | 6 | 4 | 7$^7$ | | | | | | | | |
| WC | F Cobolli | 3 | 7$^8$ | 7$^7$ | WC | F Cobolli | 4 | 6 | 6$^2$ | | | | | | | | |
| | M Giron | 6 | 6$^6$ | 6$^4$ | | | | | | 4 | J-L Struff | 2 | 4 | | | | |
| | S Johnson | 6$^7$ | 2 | | | | | | | 6 | T Paul | 6 | 6 | | | | |
| | J Veselý | 7$^9$ | 6 | | | J Veselý | 7$^7$ | 6$^5$ | 3 | | | | | | | | |
| | S Travaglia | 5 | 4 | | 6 | T Paul | 6$^3$ | 7$^7$ | 6 | | | | | | | | |
| 6 | T Paul | 7 | 6 | | | | | | | | | | | | | | |

### Bottom 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | A Bedene | 6 | 7$^{10}$ | | | | | | | | | | | | | | | |
| | S Caruso | 4 | 6$^8$ | | 7 | A Bedene | 5 | 2 | | | | | | | | | | |
| WC | M Cecchinato | 6 | 7$^7$ | | WC | M Cecchinato | 7 | 6 | | | | | | | | | | |
| Q | R Brancaccio | 3 | 6$^5$ | | | | | | | WC | M Cecchinato | 6 | 6 | | | | | |
| | E Ruusuvuori | 6$^4$ | 7 | 3 | | | | | | LL | N Gombos | 3 | 1 | | | | | |
| LL | N Gombos | 7$^7$ | 5 | 6 | LL | N Gombos | 6 | 6$^4$ | 6 | | | | | | | | | |
| | | | | | 3 | A Ramos Viñolas | 3 | 7$^7$ | 2 | | | | | | | | | |
| | | | | | | | | | | | | | | WC | M Cecchinato | 7$^7$ | 1 | 6 |
| 5 | R Gasquet | 6 | 6 | | | | | | | | | | | | J Munar | 6$^2$ | 6 | 1 |
| Q | D Altmaier | 3 | 3 | | 5 | R Gasquet | 6 | 3 | 6 | | | | | | | | | |
| | G Simon | 0 | 4 | | Q | P Martínez | 3 | 6 | 3 | | | | | | | | | |
| Q | P Martínez | 6 | 6 | | | | | | | 5 | R Gasquet | 1 | 1 | | | | | |
| | J Munar | 6 | 7$^7$ | | | | | | | | J Munar | 6 | 6 | | | | | |
| Q | M Ymer | 3 | 6$^5$ | | | J Munar | 7 | 3 | | | | | | | | | | |
| | | | | | 2 | B Paire | 5 | 1$^r$ | | | | | | | | | | |

## Qualifying
### Seeds

* Norbert Gombos (qualifying competition, lucky loser)
* James Duckworth (first round)
* Pedro Martínez (qualified)
* Mikael Ymer (qualified)
* Benjamin Bonzi (qualifying competition)
* Philipp Kohlschreiber (first round)
* Daniel Altmaier (qualified)
* Matteo Viola (qualifying competition)

### Qualifiers

* Daniel Altmaier
* Raúl Brancaccio
* Pedro Martínez
* Mikael Ymer

### Lucky loser

* Norbert Gombos

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Norbert Gombos | 4 | | | | | |
| | Max Purcell | 1$^r$ | | | | | |
| | Max Purcell | 1$^r$ | | 1 | Norbert Gombos | 6$^6$ | 6$^8$ |
| | | | | 7 | Daniel Altmaier | 7$^8$ | 7$^{10}$ |
| | Pavel Kotov | 3 | 1 | 7 | Daniel Altmaier | 7$^8$ | 7$^{10}$ |
| 7 | Daniel Altmaier | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | James Duckworth | 5 | 3 | | | | | |
| WC | Raúl Brancaccio | 7 | 6 | | | | | |
| WC | Raúl Brancaccio | 7 | 6 | | WC | Raúl Brancaccio | 6 | 6 |
| | | | | | | Teymuraz Gabashvili | 3 | 3 |
| | Teymuraz Gabashvili | 1 | 7 | 6 | | Teymuraz Gabashvili | 3 | 3 |
| 6 | Philipp Kohlschreiber | 6 | 5 | 2 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Pedro Martínez | 6 | 6 | | | | | |
| WC | Francesco Passaro | 4 | 1 | | | | | |
| WC | Francesco Passaro | 4 | 1 | 3 | Pedro Martínez | 6 | 5 | 7$^7$ |
| | | | | 5 | Benjamin Bonzi | 4 | 7 | 6$^4$ |
| | Ulises Blanch | 3 | 5 | 5 | Benjamin Bonzi | 4 | 7 | 6$^4$ |
| 5 | Benjamin Bonzi | 6 | 7 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Mikael Ymer | 6 | 6 | | | | | | |
| | Facundo Mena | 1 | 4 | | | | | | |
| | Facundo Mena | 1 | 4 | | 4 | Mikael Ymer | 6 | 3 | 6 |
| | | | | | 8 | Matteo Viola | 4 | 6 | 0 |
| | Evgeny Karlovskiy | 5 | 7 | 5 | 8 | Matteo Viola | 4 | 6 | 0 |
| 8 | Matteo Viola | 7 | 5 | 7 | | | | | |