2018 Sydney International

The 2018 Sydney International was a joint 2018 ATP World Tour and 2018 WTA Tour tennis tournament, played on outdoor hard courts in Sydney, New South Wales (NSW). It was the 126th edition of the tournament and took place at the NSW Tennis Centre in Sydney. It was held from 7 January through 13 January 2018 as part of the Australian Open Series in preparation for the first Grand Slam of the year. Venus Williams played the event for the first time in 17 years, 20 years after her maiden appearance.

Prize money
1Qualifiers prize money is also the Round of 32 prize money.
 * per team

Seeds

 * 1Ranking as of 1 January 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇦🇺 Alex Bolt
 * 🇦🇺 John Millman
 * 🇦🇺 Jordan Thompson

The following players received entry into the singles main draw as special exempts:
 * 🇦🇺 Alex de Minaur
 * 🇫🇷 Gilles Simon

The following players received entry from the qualifying draw:
 * 🇷🇺 Evgeny Donskoy
 * 🇷🇺 Daniil Medvedev
 * 🇦🇺 Alexei Popyrin
 * 🇦🇺 Aleksandar Vukic

The following player received entry as a lucky loser:
 * 🇱🇹 Ričardas Berankis

Withdrawals

 * Before the tournament
 * 🇷🇸 Filip Krajinović → replaced by 🇱🇹 Ričardas Berankis
 * 🇯🇵 Kei Nishikori → replaced by 🇷🇸 Viktor Troicki

Retirements

 * 🇧🇦 Damir Džumhur

Seeds

 * 1 Ranking as of 1 January 2018.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇦🇺 Alex Bolt / 🇦🇺 Jordan Thompson
 * 🇦🇺 Christopher O'Connell / 🇦🇺 Matt Reid

Withdrawals

 * During the tournament
 * 🇧🇦 Damir Džumhur

Seeds

 * 1Ranking as of 1 January 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇪🇸 Garbiñe Muguruza
 * 🇦🇺 Ellen Perez
 * 🇦🇺 Olivia Rogowska
 * 🇦🇺 Samantha Stosur

The following players received entry from the qualifying draw:
 * 🇺🇸 Kristie Ahn
 * 🇺🇸 Catherine Bellis
 * Verónica Cepede Royg
 * 🇮🇹 Camila Giorgi

The following players received entry as lucky losers:
 * 🇪🇸 Lara Arruabarrena
 * 🇩🇪 Carina Witthöft

Withdrawals

 * Before the tournament
 * 🇩🇪 Julia Görges → replaced by 🇩🇪 Carina Witthöft
 * 🇷🇺 Anastasia Pavlyuchenkova → replaced by 🇷🇺 Ekaterina Makarova
 * 🇨🇳 Peng Shuai → replaced by 🇪🇸 Lara Arruabarrena


 * During the tournament
 * 🇪🇸 Garbiñe Muguruza

Retirements

 * Mirjana Lučić-Baroni
 * 🇫🇷 Kristina Mladenovic

Seeds

 * 1Ranking as of 1 January 2018.

Other entrants
The following team received entry as alternates:
 * 🇪🇸 Lara Arruabarrena / 🇺🇸 Lauren Davis

Withdrawals

 * Before the tournament
 * 🇷🇺 Elena Vesnina


 * During the tournament
 * 🇨🇿 Barbora Strýcová

Men's singles

 * 🇷🇺 Daniil Medvedev def. 🇦🇺 Alex de Minaur, 1–6, 6–4, 7–5

Women's singles

 * 🇩🇪 Angelique Kerber def. 🇦🇺 Ashleigh Barty, 6–4, 6–4

Men's doubles

 * 🇵🇱 Łukasz Kubot / 🇧🇷 Marcelo Melo def. 🇩🇪 Jan-Lennard Struff / 🇷🇸 Viktor Troicki, 6–3, 6–4.

Women's doubles

 * 🇨🇦 Gabriela Dabrowski / 🇨🇳 Xu Yifan def. Latisha Chan / 🇨🇿 Andrea Sestini Hlaváčková, 6–3, 6–1