# 2017 Australian Open – Girls' singles

Marta Kostyuk won the title, defeating Rebeka Masarova in the final, 7–5, 1–6, 6–4.
Vera Lapko was the defending champion, but was no longer eligible to participate in junior events. She received a wildcard into the women's singles qualifying competition, where she lost in the second round to Ons Jabeur.

## Seeds

* Rebeka Masarova (final)
* Taylor Johnson (third round)
* Wang Xiyu (second round)
* Emily Appleton (quarterfinals)
* Olga Danilović (third round, retired)
* Jodie Anna Burrage (third round)
* Bianca Andreescu (semifinals)
* Iga Świątek (first round)
* Ayumi Miyamoto (first round)
* Mai Hontama (quarterfinals)
* Marta Kostyuk (champion)
* Caty McNally (first round)
* Carson Branstine (third round)
* Yuki Naito (third round)
* Natasha Subhash (first round)
* Elena Rybakina (semifinals)

## 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Rebeka Masarova | 6 | 6 | | | | | | | | | | |
| 10 | Mai Hontama | 3 | 1 | | | | | | | | | | |
| 10 | Mai Hontama | 3 | 1 | 1 | Rebeka Masarova | 4 | 7$^7$ | 6 | | | | | |
| | | | | 7 | Bianca Andreescu | 6 | 6$^5$ | 0 | | | | | |
| 4 | Emily Appleton | 2 | 2 | 7 | Bianca Andreescu | 6 | 6$^5$ | 0 | | | | | |
| 7 | Bianca Andreescu | 6 | 6 | | | | | | | | | | |
| 7 | Bianca Andreescu | 6 | 6 | | | | | | 1 | Rebeka Masarova | 5 | 6 | 4 |
| | | | | | | | | | 11 | Marta Kostyuk | 7 | 1 | 6 |
| 11 | Marta Kostyuk | 6 | 6 | | | | | | | | | | | 11 | Marta Kostyuk | 7 | 1 | 6 |
| | Liang En-shuo | 3 | 1 | | | | | | | | | | |
| | Liang En-shuo | 3 | 1 | 11 | Marta Kostyuk | 6 | 7 | | | | | | |
| | | | | 16 | Elena Rybakina | 1 | 5 | | | | | | |
| | Zeel Desai | 4 | 3 | 16 | Elena Rybakina | 1 | 5 | | | | | | |
| 16 | Elena Rybakina | 6 | 6 | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 1 | Rebeka Masarova | 6 | 7 | | | | | | | | | | | | | | | |
| Q | Himari Sato | 2 | 5 | | 1 | R Masarova | 6 | 6 | | | | | | | | | | |
| | Wang Xinyu | 6 | 0 | | | Xin Wang | 4 | 3 | | | | | | | | | | |
| | Maria Vittoria Viviani | 2 | 0$^d$ | | | | | | | 1 | R Masarova | 6 | 7 | | | | | |
| | Baijing Lin | 7 | 4 | 7 | | | | | | 13 | C Branstine | 2 | 5 | | | | | |
| | Malene Helgø | 5 | 6 | 5 | | B Lin | 5 | 6 | 3 | | | | | | | | | |
| Q | Patricia Apisah | 1 | 3 | | 13 | C Branstine | 7 | 4 | 6 | | | | | | | | | |
| 13 | Carson Branstine | 6 | 6 | | | | | | | | | | | | 1 | R Masarova | 6 | 6 |
| 10 | Mai Hontama | 6 | 6 | | | | | | | | | | | | 10 | M Hontama | 3 | 1 |
| | Nicole Mossmer | 1 | 3 | | 10 | M Hontama | 6 | 6 | | | | | | | | | | |
| | Mihika Yadav | 6 | 6 | | | M Yadav | 2 | 1 | | | | | | | | | | |
| Q | Ali Collins | 3 | 4 | | | | | | | 10 | M Hontama | 6$^2$ | 6 | 6 | | | | |
| Q | Ekaterina Vishnevskaya | 6 | 6 | | | | | | | Q | E Vishnevskaya | 7$^7$ | 2 | 1 | | | | |
| WC | Lisa Mays | 2 | 1 | | Q | E Vishnevskaya | 6 | 1 | 6 | | | | | | | | | |
| | Chen Pei-hsuan | 2 | 7 | 6 | | P-h Chen | 4 | 6 | 1 | | | | | | | | | |
| 8 | Iga Świątek | 6 | 5 | 1 | | | | | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 4 | Emily Appleton | 6 | 6 | | | | | | | | | | | | | | | |
| | Johana Marková | 3 | 2 | | 4 | E Appleton | 4 | 6 | 6 | | | | | | | | | |
| | Seone Mendez | 6 | 6 | | | S Mendez | 6 | 3 | 2 | | | | | | | | | |
| Q | Jimena Rodriguez-Benito | 2 | 1 | | | | | | | 4 | E Appleton | 0 | 6 | 6 | | | | |
| | Oleksandra Andrieieva | 2 | 3 | | | | | | | 14 | Y Naito | 6 | 3 | 3 | | | | |
| Q | Eléonora Molinaro | 6 | 6 | | Q | E Molinaro | 6 | 1 | 3 | | | | | | | | | |
| WC | Zoe Kruger | 6 | 2 | 5 | 14 | Y Naito | 2 | 6 | 6 | | | | | | | | | |
| 14 | Yuki Naito | 2 | 6 | 7 | | | | | | | | | | | 4 | E Appleton | 2 | 2 |
| 12 | Caty McNally | 3 | 1 | | | | | | | | | | | | 7 | B Andreescu | 6 | 6 |
| SE | Gabriella Da Silva-Fick | 6 | 6 | | SE | G Da Silva-Fick | 3 | 3 | | | | | | | | | | |
| | Mihaela Lorena Mărculescu | 6$^3$ | 4 | | WC | C Yuan | 6 | 6 | | | | | | | | | | |
| WC | Yuan Chengyiyi | 7$^7$ | 6 | | | | | | | WC | C Yuan | 0 | 2 | | | | | |
| | Cho I-hsuan | 6$^5$ | 6 | 6 | | | | | | 7 | B Andreescu | 6 | 6 | | | | | |
| WC | Ivana Popovic | 7$^7$ | 2 | 2 | | I-h Cho | 4 | 4 | | | | | | | | | | |
| | Lisa Piccinetti | 4 | 0 | | 7 | B Andreescu | 6 | 6 | | | | | | | | | | |
| 7 | Bianca Andreescu | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 6 | Jodie Anna Burrage | 2 | 6 | 6 | | | | | | | | | | | | | | |
| | Federica Bilardo | 6 | 1 | 3 | 6 | JA Burrage | 6 | 6 | | | | | | | | | | |
| WC | Michaela Haet | 6 | 6 | | WC | M Haet | 4 | 4 | | | | | | | | | | |
| | Hurricane Tyra Black | 3 | 4 | | | | | | | 6 | JA Burrage | 7$^7$ | 1 | 4 | | | | |
| | Naho Sato | 3 | 6 | 6 | | | | | | 11 | M Kostyuk | 6$^5$ | 6 | 6 | | | | |
| Q | Lee Eun-hye | 6 | 2 | 2 | | N Sato | 1 | 6 | 2 | | | | | | | | | |
| | Mahak Jain | 3 | 3 | | 11 | M Kostyuk | 6 | 2 | 6 | | | | | | | | | |
| 11 | Marta Kostyuk | 6 | 6 | | | | | | | | | | | | 11 | M Kostyuk | 6 | 6 |
| 15 | Natasha Subhash | 1 | 5 | | | | | | | | | | | | | E-s Liang | 3 | 1 |
| | Sofya Lansere | 6 | 7 | | | S Lansere | 6 | 6 | | | | | | | | | | |
| | Anri Nagata | 5 | 6 | 6 | | A Nagata | 3 | 3 | | | | | | | | | | |
| WC | Alexandra Bozovic | 7 | 2 | 2 | | | | | | | S Lansere | 4 | 5 | | | | | |
| | Thasaporn Naklo | 3 | 1 | | | | | | | | E-s Liang | 6 | 7 | | | | | |
| | Liang En-shuo | 6 | 6 | | | E-s Liang | 6$^4$ | 6 | 6 | | | | | | | | | |
| | Maja Chwalińska | 7 | 2 | 3 | 3 | Xiy Wang | 7$^7$ | 3 | 1 | | | | | | | | | |
| 3 | Wang Xiyu | 5 | 6 | 6 | | | | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 5 | Olga Danilović | 6 | 5 | 6 | | | | | | | | | | | | | |
| WC | Aleksa Cveticanin | 1 | 7 | 2 | 5 | O Danilović | 6 | 6 | | | | | | | | | |
| | Lea Bošković | 3 | 4 | | | S Ma | 3 | 1 | | | | | | | | | |
| | Ma Shuyue | 6 | 6 | | | | | | | 5 | O Danilović | 5$^r$ | | | | | |
| | Zeel Desai | 6 | 3 | 7 | | | | | | | Z Desai | 3 | | | | | |
| | Kaitlin Staines | 4 | 6 | 5 | | Z Desai | 6 | 6 | | | | | | | | | |
| Q | Jule Niemeier | 7$^7$ | 4 | 8 | Q | J Niemeier | 4 | 2 | | | | | | | | | |
| 9 | Ayumi Miyamoto | 6$^5$ | 6 | 6 | | | | | | | | | | | Z Desai | 4 | 3 |
| 16 | Elena Rybakina | 6 | 7 | | | | | | | | | | | 16 | E Rybakina | 6 | 6 |
| | Lee Yang | 3 | 5 | | 16 | E Rybakina | 6 | 7 | | | | | | | | | |
| | Denisa Hindová | 6 | 6 | | | D Hindová | 2 | 5 | | | | | | | | | |
| WC | Selina Turulja | 1 | 2 | | | | | | | 16 | E Rybakina | 6 | 6 | | | | |
| | Tatiana Pieri | 6 | 6 | | | | | | | 2 | T Johnson | 3 | 2 | | | | |
| | Astrid Brune Olsen | 2 | 3 | | | T Pieri | 7$^7$ | 4 | 4 | | | | | | | | |
| | Violet Apisah | 7$^7$ | 6$^4$ | 2 | 2 | T Johnson | 6$^1$ | 6 | 6 | | | | | | | | |
| 2 | Taylor Johnson | 6$^4$ | 7$^7$ | 6 | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Ali Collins (qualified)
* Jule Niemeier (qualified)
* Lee Eun-hye (qualified)
* Eléonora Molinaro (qualified)
* Alana Smith (first round)
* Himari Sato (qualified)
* Ekaterina Vishnevskaya (qualified)
* Ana Biškić (qualifying competition)
* Lexie Stevens (first round)
* Jimena Rodriguez-Benito (qualified)
* Weronika Falkowska (qualifying competition)
* Joanna Garland (qualifying competition)
* Nidhi Surapaneni (qualifying competition)
* Cho Yi-tsen (first round)
* Yang Yidi (qualifying competition)
* Rika Tanaka (qualifying competition)

### Qualifiers

* Ali Collins
* Jule Niemeier
* Lee Eun-hye
* Eléonora Molinaro
* Patricia Apisah
* Himari Sato
* Ekaterina Vishnevskaya
* Jimena Rodriguez-Benito

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | 1 | Ali Collins | 6 | 6 |
| | Tayla Whitehouse | 3 | 4 | 13 | Nidhi Surapaneni | 1 | 0 |
| 13 | Nidhi Surapaneni | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Jule Niemeier | 6 | 6 | | | | |
| | Erika Bollweg | 2 | 2 | | | | |
| | Erika Bollweg | 2 | 2 | 2 | Jule Niemeier | 6 | 7 |
| | | | | | Satoko Sueno | 4 | 5 |
| | Satoko Sueno | 6 | 6 | | Satoko Sueno | 4 | 5 |
| 14 | Cho Yi-tsen | 1 | 4 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Lee Eun-hye | 6 | 6 | | | | |
| | Tenika McGiffin | 4 | 4 | | | | |
| | Tenika McGiffin | 4 | 4 | 3 | Lee Eun-hye | 6 | 6 |
| | | | | 16 | Rika Tanaka | 4 | 3 |
| | Jazmin Walle | 0 | 1 | 16 | Rika Tanaka | 4 | 3 |
| 16 | Rika Tanaka | 6 | 6 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Eléonora Molinaro | 6 | 6 | | | | |
| | Sakura Hosogi | 2 | 4 | | | | |
| | Sakura Hosogi | 2 | 4 | 4 | Eléonora Molinaro | 6 | 6 |
| | | | | 12 | Joanna Garland | 4 | 0 |
| | Isabella Bozicevic | 2 | 2 | 12 | Joanna Garland | 4 | 0 |
| 12 | Joanna Garland | 6 | 6 | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Alana Smith | 3 | 6$^4$ | | | | | |
| | Hikaru Sato | 6 | 7$^7$ | | | | | |
| | Hikaru Sato | 6 | 7$^7$ | | Hikaru Sato | 1 | 7 | 4 |
| | | | | | Patricia Apisah | 6 | 5 | 6 |
| | Patricia Apisah | 2 | 6 | 6 | Patricia Apisah | 6 | 5 | 6 |
| 9 | Lexie Stevens | 6 | 2 | 0 | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Himari Sato | 6 | 6 | | | | | |
| | Sina Züger | 4 | 4 | | | | | |
| | Sina Züger | 4 | 4 | | 6 | Himari Sato | 6 | 6 |
| | | | | | 11 | Weronika Falkowska | 2 | 3 |
| | Annerly Poulos | 2 | 6 | 2 | 11 | Weronika Falkowska | 2 | 3 |
| 11 | Weronika Falkowska | 6 | 1 | 6 | | | | |

#### Seventh qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 7 | Ekaterina Vishnevskaya | 6 | 6 | | | | |
| | Tahlia van der Eerden | 0 | 0 | | | | |
| | Tahlia van der Eerden | 0 | 0 | 7 | Ekaterina Vishnevskaya | 6 | 6 |
| | | | | 15 | Yang Yidi | 4 | 3 |
| | Megan Basson | 2 | 2 | 15 | Yang Yidi | 4 | 3 |
| 15 | Yang Yidi | 6 | 6 | | | | |

#### Eighth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 8 | Ana Biškić | 6 | 6 | | | | | |
| | Natsumi Shioya | 4 | 2 | | | | | |
| | Natsumi Shioya | 4 | 2 | 8 | Ana Biškić | 4 | 6 | 5 |
| | | | | 10 | Jimena Rodriguez-Benito | 6 | 4 | 7 |
| | Amber Marshall | 4 | 2 | 10 | Jimena Rodriguez-Benito | 6 | 4 | 7 |
| 10 | Jimena Rodriguez-Benito | 6 | 6 | | | | | |