# 2018 Brisbane International – Women's singles

Karolína Plíšková was the defending champion, but lost in the semifinals to Elina Svitolina.
Svitolina went on to win the title, defeating Aliaksandra Sasnovich in the final, 6–2, 6–1.
Garbiñe Muguruza was in contention for the WTA No. 1 singles ranking at the start of the tournament, but she retired during her opening second round match. As such, Simona Halep retained the No. 1 ranking. Of note, if was the fourth consecutive edition of the tournament that Muguruza had to retire or withdraw from due to injury.

## Seeds

The top two seeds received a bye into the second round.
* Garbiñe Muguruza (second round, retired)
* Karolína Plíšková (semifinals)
* Elina Svitolina (champion)
* Caroline Garcia (first round, retired)
* Johanna Konta (quarterfinals, retired)
* Kristina Mladenovic (first round)
* Anastasija Sevastova (semifinals)
* Ashleigh Barty (first round)

## Draw
### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 7 | Anastasija Sevastova | 6$^3$ | 4 | | | | |
| Q | Aliaksandra Sasnovich | 7$^7$ | 6 | | | | |
| Q | Aliaksandra Sasnovich | 7$^7$ | 6 | Q | Aliaksandra Sasnovich | 2 | 1 |
| | | | | 3 | Elina Svitolina | 6 | 6 |
| 3 | Elina Svitolina | 7 | 7 | 3 | Elina Svitolina | 6 | 6 |
| 2 | Karolína Plíšková | 5 | 5 | | | | |

### 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 | G Muguruza | 7 | 6$^3$ | 2$^r$ | | | | | | | | | |
| | C Witthöft | 5 | 6$^2$ | | | A Krunić | 5 | 7$^7$ | 1 | | | | | | | | | |
| | A Krunić | 7 | 7$^7$ | | | | | | | | A Krunić | 2 | 4 | | | | | |
| Q | J Brady | 6$^3$ | 1 | | | | | | | 7 | A Sevastova | 6 | 6 | | | | | |
| | S Cîrstea | 7$^7$ | 6 | | | S Cîrstea | 2 | 1 | | | | | | | | | | |
| | S Stosur | 1 | 3 | | 7 | A Sevastova | 6 | 6 | | | | | | | | | | |
| 7 | A Sevastova | 6 | 6 | | | | | | | | | | | | 7 | A Sevastova | 6$^3$ | 4 |
| 4 | C Garcia | 6 | 3 | 0$^r$ | | | | | | | | | | | Q | A Sasnovich | 7$^7$ | 6 |
| | A Cornet | 3 | 6 | 0 | | A Cornet | 6 | 7 | | | | | | | | | | |
| | T Maria | 4 | 6 | 0 | | M Lučić-Baroni | 1 | 5 | | | | | | | | | | |
| | M Lučić-Baroni | 6 | 4 | 6 | | | | | | | A Cornet | 6 | 2 | 3 | | | | |
| LL | H Watson | 0 | 3 | | | | | | | Q | A Sasnovich | 3 | 6 | 6 | | | | |
| | A Kontaveit | 6 | 6 | | | A Kontaveit | 6 | 6$^2$ | 3 | | | | | | | | | |
| Q | A Sasnovich | 1 | 6 | 7 | Q | A Sasnovich | 1 | 7$^7$ | 6 | | | | | | | | | |
| 6 | K Mladenovic | 6 | 3 | 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 | J Konta | 4 | 6 | 6 | | | | | | | | | | | | | | |
| | M Keys | 6 | 4 | 3 | 5 | J Konta | 4 | 6 | 6 | | | | | | | | | |
| WC | D Aiava | 1 | 4 | | WC | A Tomljanović | 6 | 1 | 4 | | | | | | | | | |
| WC | A Tomljanović | 6 | 6 | | | | | | | 5 | J Konta | 6 | 6$^6$ | 2$^r$ | | | | |
| | K Bertens | 1 | 2 | | | | | | | 3 | E Svitolina | 1 | 7$^8$ | 3 | | | | |
| | A Konjuh | 6 | 6 | | | A Konjuh | 3 | 1 | | | | | | | | | | |
| | C Suárez Navarro | 2 | 4 | | 3 | E Svitolina | 6 | 6 | | | | | | | | | | |
| 3 | E Svitolina | 6 | 6 | | | | | | | | | | | | 3 | E Svitolina | 7 | 7 |
| 8 | A Barty | 3 | 2 | | | | | | | | | | | | 2 | Ka Plíšková | 5 | 5 |
| | L Tsurenko | 6 | 6 | | | L Tsurenko | 4 | 3 | | | | | | | | | | |
| Q | K Kanepi | 6 | 6 | | Q | K Kanepi | 6 | 6 | | | | | | | | | | |
| | D Kasatkina | 2 | 2 | | | | | | | Q | K Kanepi | 6 | 5 | 2 | | | | |
| Q | K Bondarenko | 2 | 5 | | | | | | | 2 | Ka Plíšková | 3 | 7 | 6 | | | | |
| | C Bellis | 6 | 7 | | | C Bellis | 1 | 1 | | | | | | | | | | |
| | | | | | 2 | Ka Plíšková | 6 | 6 | | | | | | | | | | |

## Qualifying
### Seeds

* Natalia Vikhlyantseva (second round, withdrew)
* Jennifer Brady (qualified)
* Heather Watson (qualifying competition; lucky loser)
* Aliaksandra Sasnovich (qualified)
* Kateryna Bondarenko (qualified)
* Andrea Petkovic (first round)
* Kaia Kanepi (qualified)
* Kristie Ahn (qualifying competition)

### Qualifiers

* Kateryna Bondarenko
* Jennifer Brady
* Kaia Kanepi
* Aliaksandra Sasnovich

### Lucky losers

* Heather Watson

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Natalia Vikhlyantseva | 7$^7$ | 6 | | | | | | | | | | |
| | Viktoriya Tomova | 6$^4$ | 3 | | | | | | | | | | |
| | Viktoriya Tomova | 6$^4$ | 3 | | 1 | Natalia Vikhlyantseva | | | | | | | |
| | | | | | | Dayana Yastremska | w/o | | | | | | |
| | Dayana Yastremska | 6 | 6 | | | Dayana Yastremska | w/o | | | | | | |
| | Vera Lapko | 2 | 4 | | | | | | | | | | |
| | Vera Lapko | 2 | 4 | | | | | | | Dayana Yastremska | 2 | 6 | 4 |
| | | | | | | | | | 5 | Kateryna Bondarenko | 6 | 4 | 6 |
| | Alizé Lim | 6 | 3 | 2 | | | | | | | | | | 5 | Kateryna Bondarenko | 6 | 4 | 6 |
| | Jaimee Fourlis | 1 | 6 | 6 | | | | | | | | | |
| | Jaimee Fourlis | 1 | 6 | 6 | | Jaimee Fourlis | 5 | 1 | | | | | |
| | | | | | 5 | Kateryna Bondarenko | 7 | 6 | | | | | |
| WC | Naiktha Bains | 1 | 4 | | 5 | Kateryna Bondarenko | 7 | 6 | | | | | |
| 5 | Kateryna Bondarenko | 6 | 6 | | | | | | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Jennifer Brady | 7 | 6 | | | | | | | | | |
| | Lizette Cabrera | 5 | 1 | | | | | | | | | |
| | Lizette Cabrera | 5 | 1 | | 2 | Jennifer Brady | 6 | 6 | | | | |
| | | | | | | Irina Falconi | 1 | 2 | | | | |
| | Irina Falconi | 4 | 6 | 6 | | Irina Falconi | 1 | 2 | | | | |
| | Caroline Dolehide | 6 | 2 | 4 | | | | | | | | |
| | Caroline Dolehide | 6 | 2 | 4 | | | | | 2 | Jennifer Brady | 6 | 6 |
| | | | | | | | | | 8 | Kristie Ahn | 1 | 4 |
| | Fanny Stollár | 3 | 4 | | | | | | | | | | 8 | Kristie Ahn | 1 | 4 |
| | Priscilla Hon | 6 | 6 | | | | | | | | | |
| | Priscilla Hon | 6 | 6 | | | Priscilla Hon | 3 | 4 | | | | |
| | | | | | 8 | Kristie Ahn | 6 | 6 | | | | |
| | Antonia Lottner | 5 | 1 | | 8 | Kristie Ahn | 6 | 6 | | | | |
| 8 | Kristie Ahn | 7 | 6 | | | | | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Heather Watson | 7 | 6 | | | | | | | | |
| | Danielle Lao | 5 | 3 | | | | | | | | |
| | Danielle Lao | 5 | 3 | 3 | Heather Watson | 6 | 6 | | | | |
| | | | | | Misaki Doi | 2 | 4 | | | | |
| | Misaki Doi | 7$^{12}$ | 6 | | Misaki Doi | 2 | 4 | | | | |
| | Tamara Zidanšek | 6$^{10}$ | 4 | | | | | | | | |
| | Tamara Zidanšek | 6$^{10}$ | 4 | | | | | 3 | Heather Watson | 4 | 1 |
| | | | | | | | | 7 | Kaia Kanepi | 6 | 6 |
| | Kayla Day | 1 | 1 | | | | | | | | | 7 | Kaia Kanepi | 6 | 6 |
| WC | Sara Tomic | 6 | 6 | | | | | | | | |
| WC | Sara Tomic | 6 | 6 | WC | Sara Tomic | 1 | 4 | | | | |
| | | | | 7 | Kaia Kanepi | 6 | 6 | | | | |
| WC | Kimberly Birrell | 1 | 3 | 7 | Kaia Kanepi | 6 | 6 | | | | |
| 7 | Kaia Kanepi | 6 | 6 | | | | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Aliaksandra Sasnovich | 6 | 6 | | | | | | | | | | | |
| | Julia Boserup | 1 | 4 | | | | | | | | | | | |
| | Julia Boserup | 1 | 4 | | 4 | Aliaksandra Sasnovich | 6 | 6 | | | | | | |
| | | | | | | Isabelle Wallace | 3 | 1 | | | | | | |
| | Isabelle Wallace | 4 | 6 | 6 | | Isabelle Wallace | 3 | 1 | | | | | | |
| WC | Tammi Patterson | 6 | 3 | 4 | | | | | | | | | | |
| WC | Tammi Patterson | 6 | 3 | 4 | | | | | | 4 | Aliaksandra Sasnovich | 3 | 7 | 6 |
| | | | | | | | | | | | Polina Monova | 6 | 5 | 2 |
| | Olivia Rogowska | 6 | 5 | 6$^5$ | | | | | | | | | | | Polina Monova | 6 | 5 | 2 |
| | Bernarda Pera | 4 | 7 | 7$^7$ | | | | | | | | | | |
| | Bernarda Pera | 4 | 7 | 7$^7$ | | Bernarda Pera | 3 | 7$^7$ | 3 | | | | | |
| | | | | | | Polina Monova | 6 | 6$^4$ | 6 | | | | | |
| | Polina Monova | 6 | 6 | | | Polina Monova | 6 | 6$^4$ | 6 | | | | | |
| 6 | Andrea Petkovic | 3 | 3 | | | | | | | | | | | |