# 2018 Ladies Open Lugano – Singles

Elise Mertens defeated Aryna Sabalenka in the final, 7–5, 6–2, to win the singles title at the 2018 Ladies Open Lugano.
Markéta Vondroušová was the defending champion, but lost in the second round to Mertens.

## Seeds

* Kristina Mladenovic (first round, retired)
* Elise Mertens (champion)
* Carla Suárez Navarro (withdrew)
* Anett Kontaveit (first round)
* Svetlana Kuznetsova (first round)
* Alizé Cornet (second round)
* Mihaela Buzărnescu (first round)
* Aliaksandra Sasnovich (second round)
* Alison Van Uytvanck (second 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 |
| WC | Stefanie Vögele | 4 | 2 | | | | | |
| | Aryna Sabalenka | 6 | 6 | | | | | |
| | Aryna Sabalenka | 6 | 6 | | | Aryna Sabalenka | 5 | 2 |
| | | | | | 2 | Elise Mertens | 7 | 6 |
| Q | Vera Lapko | 1 | 6 | 4 | 2 | Elise Mertens | 7 | 6 |
| 2 | Elise Mertens | 6 | 4 | 6 | | | | |

### 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 | K Mladenovic | 6$^5$ | 2$^r$ | | | | | | | | | | | | | | |
| Q | T Korpatsch | 7$^7$ | 3 | | Q | T Korpatsch | 7$^7$ | 6 | | | | | | | | | |
| | L Siegemund | 6$^5$ | 3$^r$ | | Q | K von Deichmann | 6$^2$ | 4 | | | | | | | | | |
| Q | K von Deichmann | 7$^7$ | 2 | | | | | | | Q | T Korpatsch | 4 | 3 | | | | |
| LL | M Fręch | 3 | 3 | | | | | | | WC | S Vögele | 6 | 6 | | | | |
| WC | S Vögele | 6 | 6 | | WC | S Vögele | 2 | 7 | 6 | | | | | | | | |
| WC | J Teichmann | 6$^2$ | 0 | | 6 | A Cornet | 6 | 5 | 3 | | | | | | | | |
| 6 | A Cornet | 7$^7$ | 6 | | | | | | | | | | | WC | S Vögele | 4 | 2 |
| 9 | A Van Uytvanck | 6 | 6 | | | | | | | | | | | | A Sabalenka | 6 | 6 |
| | O Dodin | 4 | 2 | | 9 | A Van Uytvanck | 2 | 1 | | | | | | | | | |
| | Kr Plíšková | 3 | 2 | | | C Giorgi | 6 | 6 | | | | | | | | | |
| | C Giorgi | 6 | 6 | | | | | | | | C Giorgi | 3 | 0 | | | | |
| | S-w Hsieh | 5 | 0 | | | | | | | | A Sabalenka | 6 | 6 | | | | |
| | P Hercog | 7 | 6 | | | P Hercog | 3 | 1 | | | | | | | | | |
| | A Sabalenka | 5 | 6 | 6 | | A Sabalenka | 6 | 6 | | | | | | | | | |
| 7 | M Buzărnescu | 7 | 3 | 2 | | | | | | | | | | | | | |

### 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 | Semifinals |
| 8 | A Sasnovich | 7$^7$ | 6 | | | | | | | | | | | | | | | | |
| Q | R Hogenkamp | 6$^4$ | 0 | | 8 | A Sasnovich | 6 | 4 | 2 | | | | | | | | | | |
| | K Flipkens | 1 | 6 | 6 | | K Flipkens | 4 | 6 | 6 | | | | | | | | | | |
| | C Witthöft | 6 | 4 | 3 | | | | | | | K Flipkens | 4 | 6$^4$ | | | | | | |
| Q | D Kovinić | 7$^8$ | 3 | 6 | | | | | | Q | V Lapko | 6 | 7$^7$ | | | | | | |
| | V Golubic | 6$^6$ | 6 | 4 | Q | D Kovinić | 2 | 3 | | | | | | | | | | | |
| Q | V Lapko | 3 | 6 | 6 | Q | V Lapko | 6 | 6 | | | | | | | | | | | |
| 4 | A Kontaveit | 6 | 4 | 3 | | | | | | | | | | | Q | V Lapko | 1 | 6 | 4 |
| 5/WC | S Kuznetsova | 6 | 3 | 4 | | | | | | | | | | | 2 | E Mertens | 6 | 4 | 6 |
| | M Barthel | 4 | 6 | 6 | | M Barthel | 6 | 4 | 6 | | | | | | | | | | |
| | D Vekić | 6 | 7 | | | D Vekić | 3 | 6 | 4 | | | | | | | | | | |
| Q | A Cadanțu | 0 | 5 | | | | | | | | M Barthel | 4 | 7 | 6$^0$ | | | | | |
| | M Vondroušová | 4 | 7$^7$ | 6 | | | | | | 2 | E Mertens | 6 | 5 | 7$^7$ | | | | | |
| | Y Putintseva | 6 | 6$^2$ | 3 | | M Vondroušová | 2 | 7 | 5 | | | | | | | | | | |
| PR | M Minella | 4 | 1 | | 2 | E Mertens | 6 | 5 | 7 | | | | | | | | | | |
| 2 | E Mertens | 6 | 6 | | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Richèl Hogenkamp (qualified)
* Arantxa Rus (qualifying competition)
* Danka Kovinić (qualified)
* Vera Lapko (qualified)
* Magdalena Fręch (qualifying competition, lucky loser)
* Antonia Lottner (qualifying competition)
* Çağla Büyükakçay (qualifying competition)
* Roberta Vinci (first round)
* Marie Bouzková (qualifying competition)
* Alexandra Cadanțu (qualified)
* Tamara Korpatsch (qualified)
* Deborah Chiesa (first round)

### Qualifiers

* Richèl Hogenkamp
* Alexandra Cadanțu
* Danka Kovinić
* Vera Lapko
* Kathinka von Deichmann
* Tamara Korpatsch

### Lucky loser

* Magdalena Fręch

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Richèl Hogenkamp | 6 | 6 | | | | | |
| PR | Anne Schäfer | 0 | 4 | | | | | |
| PR | Anne Schäfer | 0 | 4 | 1 | Richèl Hogenkamp | 6 | 5 | 6 |
| | | | | 9 | Marie Bouzková | 3 | 7 | 4 |
| | Martina Trevisan | 1 | 2 | 9 | Marie Bouzková | 3 | 7 | 4 |
| 9 | Marie Bouzková | 6 | 6 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Arantxa Rus | 6 | 6 | | | | | |
| PR | Réka Luca Jani | 1 | 1 | | | | | |
| PR | Réka Luca Jani | 1 | 1 | 2 | Arantxa Rus | 6 | 4 | 0 |
| | | | | 10 | Alexandra Cadanțu | 2 | 6 | 6 |
| | Diāna Marcinkēviča | 3 | 2 | 10 | Alexandra Cadanțu | 2 | 6 | 6 |
| 10 | Alexandra Cadanțu | 6 | 6 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Danka Kovinić | 6 | 6 | | | | | |
| WC | Amra Sadiković | 3 | 2 | | | | | |
| WC | Amra Sadiković | 3 | 2 | | 3 | Danka Kovinić | 6 | 6 |
| | | | | | | Jessica Pieri | 1 | 2 |
| | Jessica Pieri | 4 | 6 | 6 | | Jessica Pieri | 1 | 2 |
| 12 | Deborah Chiesa | 6 | 2 | 4 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Vera Lapko | 6 | 6 | | | | | |
| WC | Simona Waltert | 2 | 0 | | | | | |
| WC | Simona Waltert | 2 | 0 | | 4 | Vera Lapko | 6 | 6 |
| | | | | | 7 | Çağla Büyükakçay | 2 | 4 |
| WC | Leonie Küng | 6 | 1 | 1 | 7 | Çağla Büyükakçay | 2 | 4 |
| 7 | Çağla Büyükakçay | 2 | 6 | 6 | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Magdalena Fręch | 6 | 6 | | | | | |
| | Amandine Hesse | 4 | 2 | | | | | |
| | Amandine Hesse | 4 | 2 | 5 | Magdalena Fręch | 3 | 6 | 6$^5$ |
| | | | | | Kathinka von Deichmann | 6 | 1 | 7$^7$ |
| | Kathinka von Deichmann | 6 | 6 | | Kathinka von Deichmann | 6 | 1 | 7$^7$ |
| 8 | Roberta Vinci | 1 | 3 | | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Antonia Lottner | 4 | 7 | 6 | | | | | |
| | Veronika Kudermetova | 6 | 5 | 4 | | | | | |
| | Veronika Kudermetova | 6 | 5 | 4 | 6 | Antonia Lottner | 1 | 6 | 1 |
| | | | | | 11 | Tamara Korpatsch | 6 | 4 | 6 |
| WC | Ylena In-Albon | 1 | 5 | | 11 | Tamara Korpatsch | 6 | 4 | 6 |
| 11 | Tamara Korpatsch | 6 | 7 | | | | | | |