# 2018 Estoril Open – Singles

Pablo Carreño Busta was the defending champion, but lost in the semifinals to Frances Tiafoe.
João Sousa won the title, defeating Tiafoe in the final, 6–4, 6–4.

## Seeds

The top four seeds received a bye into the second round.
* Kevin Anderson (second round)
* Pablo Carreño Busta (semifinals)
* Kyle Edmund (quarterfinals)
* Gilles Müller (second round)
* Albert Ramos Viñolas (first round)
* Robin Haase (first round)
* Leonardo Mayer (first round)
* Daniil Medvedev (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 |
| | Stefanos Tsitsipas | 4 | 6 | 6$^4$ | | | |
| | João Sousa | 6 | 1 | 7$^7$ | | | |
| | João Sousa | 6 | 1 | 7$^7$ | João Sousa | 6 | 6 |
| | | | | | Frances Tiafoe | 4 | 4 |
| | Frances Tiafoe | 6 | 6 | | Frances Tiafoe | 4 | 4 |
| 2 | Pablo Carreño Busta | 2 | 3 | | | | |

### 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 | K Anderson | 7$^7$ | 3 | 3 | | | | | | | | | |
| PR | P Andújar | 6$^2$ | 3 | | | S Tsitsipas | 6$^3$ | 6 | 6 | | | | | | | | | |
| | S Tsitsipas | 7$^7$ | 6 | | | | | | | | S Tsitsipas | 6$^2$ | 6 | 7$^7$ | | | | |
| | R Carballés Baena | 7$^7$ | 6 | | | | | | | | R Carballés Baena | 7$^7$ | 2 | 6$^3$ | | | | |
| | B Fratangelo | 6$^1$ | 3 | | | R Carballés Baena | 5 | 6 | 7$^7$ | | | | | | | | | |
| | C Norrie | 6 | 3 | 6 | | C Norrie | 7 | 2 | 6$^1$ | | | | | | | | | |
| 6 | R Haase | 4 | 6 | 3 | | | | | | | | | | | S Tsitsipas | 4 | 6 | 6$^4$ |
| | | | | | | | | | | | | | | | J Sousa | 6 | 1 | 7$^7$ |
| | | | | | 3 | K Edmund | 6 | 7 | | | | | | | | | | |
| | G Elias | 3 | 1 | | WC | A de Minaur | 2 | 5 | | | | | | | | | | |
| WC | A de Minaur | 6 | 6 | | | | | | | 3 | K Edmund | 3 | 6 | 0 | | | | |
| | G Simon | 3 | 6 | 6$^4$ | | | | | | | J Sousa | 6 | 1 | 6 | | | | |
| WC | P Sousa | 6 | 4 | 7$^7$ | WC | P Sousa | 6 | 6$^1$ | 5 | | | | | | | | | |
| | J Sousa | 7$^7$ | 7 | | | J Sousa | 4 | 7$^7$ | 7 | | | | | | | | | |
| 8 | D Medvedev | 6$^1$ | 5 | | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | A Ramos Viñolas | 2 | 4 | | | | | | | | | | | | | | | |
| | F Delbonis | 6 | 6 | | | F Delbonis | 6 | 5 | 2 | | | | | | | | | |
| Q | J Domingues | 3 | 2 | | Q | S Bolelli | 3 | 7 | 6 | | | | | | | | | |
| Q | S Bolelli | 6 | 6 | | | | | | | Q | S Bolelli | 5 | 2 | | | | | |
| | T Sandgren | 6 | 6$^5$ | 6$^4$ | | | | | | | F Tiafoe | 7 | 6 | | | | | |
| | F Tiafoe | 3 | 7$^7$ | 7$^7$ | | F Tiafoe | 6 | 7 | | | | | | | | | | |
| | | | | | 4 | G Müller | 4 | 5 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | F Tiafoe | 6 | 6 |
| 7 | L Mayer | 6 | 6$^7$ | 4 | | | | | | | | | | | 2 | P Carreño Busta | 2 | 3 |
| | N Jarry | 3 | 7$^9$ | 6 | | N Jarry | 6 | 7$^8$ | | | | | | | | | | |
| Q | R Ojeda Lara | 6 | 7 | | Q | R Ojeda Lara | 3 | 6$^6$ | | | | | | | | | | |
| WC | F Ferreira Silva | 4 | 5 | | | | | | | | N Jarry | 2 | 6 | 1 | | | | |
| Q | T Smyczek | 2 | 2 | | | | | | | 2 | P Carreño Busta | 6 | 2 | 6 | | | | |
| | N Kicker | 6 | 6 | | | N Kicker | 1 | 5 | | | | | | | | | | |
| | | | | | 2 | P Carreño Busta | 6 | 7 | | | | | | | | | | |

## Qualifying
### Seeds

* Tim Smyczek (qualified)
* Corentin Moutet (qualifying competition)
* Alexander Bublik (first round)
* Simone Bolelli (qualified)
* Alessandro Giannessi (first round)
* Stéphane Robert (first round)
* Jaume Munar (qualifying competition)
* Kenny de Schepper (first round)

### Qualifiers

* Tim Smyczek
* João Domingues
* Ricardo Ojeda Lara
* Simone Bolelli

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Tim Smyczek | 6 | 6 | | | | | |
| WC | Francisco Cabral | 2 | 1 | | | | | |
| WC | Francisco Cabral | 2 | 1 | | 1 | Tim Smyczek | 6 | 6 |
| | | | | | | Fred Gil | 4 | 2 |
| | Fred Gil | 6 | 1 | 6 | | Fred Gil | 4 | 2 |
| 8 | Kenny de Schepper | 4 | 6 | 4 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Corentin Moutet | 7$^7$ | 2 | 6 | | | | | |
| | Salvatore Caruso | 6$^3$ | 6 | 4 | | | | | |
| | Salvatore Caruso | 6$^3$ | 6 | 4 | 2 | Corentin Moutet | 4 | 6 | 3 |
| | | | | | | João Domingues | 6 | 2 | 6 |
| | João Domingues | 7 | 6 | | | João Domingues | 6 | 2 | 6 |
| 5 | Alessandro Giannessi | 5 | 1 | | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Alexander Bublik | 5 | 1 | | | | | |
| | Ricardo Ojeda Lara | 7 | 6 | | | | | |
| | Ricardo Ojeda Lara | 7 | 6 | | Ricardo Ojeda Lara | 6 | 2 | 6 |
| | | | | | João Monteiro | 3 | 6 | 3 |
| | João Monteiro | 6 | 6$^5$ | 7$^7$ | João Monteiro | 3 | 6 | 3 |
| 6 | Stéphane Robert | 3 | 7$^7$ | 6$^4$ | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Simone Bolelli | 6 | 6 | | | | |
| | Félix Auger-Aliassime | 4 | 1 | | | | |
| | Félix Auger-Aliassime | 4 | 1 | 4 | Simone Bolelli | 6 | 6 |
| | | | | 7 | Jaume Munar | 1 | 4 |
| WC | Tiago Cação | 5 | 3 | 7 | Jaume Munar | 1 | 4 |
| 7 | Jaume Munar | 7 | 6 | | | | |