The 2019 Australian Open was a Grand Slam tennis tournament that took place at Melbourne Park from 14 to 27 January 2019. It was the 107th edition of the Australian Open, the 51st in the Open Era, and the first Grand Slam of the year. The tournament consisted of events for professional players in singles, doubles and mixed doubles. Junior and wheelchair players competed in singles and doubles tournaments.

Roger Federer and Caroline Wozniacki were the defending men's and women's singles champions, but were unsuccessful in their respective title defenses; Federer lost to Stefanos Tsitsipas in the fourth round and Wozniacki lost to Maria Sharapova in the third round.

Novak Djokovic of Serbia won the men's singles title at the 2019 Australian Open, defeating Rafael Nadal of Spain in straight sets in the men's final. Naomi Osaka of Japan defeated Petra Kvitová of the Czech Republic in three sets to win the women's singles title. The tournament had a record attendance of 796,435 spectators. This is the most recent Grand Slam where no lucky losers were selected.

The 2019 Australian Open was the first edition to feature final set tie-breaks when a match reached 6–6 a match tiebreak to 10-points was played.

Tournament

The 2019 Australian Open was the 107th edition of the Australian Open. The tournament was run by the International Tennis Federation (ITF) and was part of the 2019 ATP Tour and the 2019 WTA Tour calendars under the Grand Slam category. The tournament consisted of both men's and women's singles and doubles draws as well as the mixed doubles events. There were singles and doubles events for both boys and girls (players under 18), which are part of the Grade A category of tournaments. There were also singles, doubles and quad events for men's and women's wheelchair tennis players as part of the NEC tour under the Grand Slam category. The tournament was played on hard courts at Melbourne Park, including three main show courts: Rod Laver Arena, Melbourne Arena and Margaret Court Arena. As in previous years, the tournament's main sponsor was Kia.

Final set tie-breaks were introduced for all match formats for the first time at the 2019 Australian Open. If a match reached 6–6 in the final set, the first player to score 10 points and be leading by at least 2 points won the match. Katie Boulter and Ekaterina Makarova were the first players in a main draw to compete in the new tie-break format.

For the first time in the men's singles competition, a 10-minute break due to heat was allowed after the third set when the Australian Open Heat Stress Scale reached 4.0 or higher. Hawkeye line-calling technology was extended to be included on all courts. A shot clock was introduced for the first time into the main draw, having been limited to qualifying only in 2018. Women gained parity in the qualifying competition as the draw was increased to 128 players in line with the men's draw.

In a five-year deal starting at the 2019 tournament, Dunlop took over from Wilson as the suppliers of the tennis balls.

Domestically, this was the first Australian Open to be broadcast by the Nine Network, after they secured the rights to televise the tournament from 2019 until 2024. Initially, the broadcast deal was to have started from 2020, however, the Seven Network, which had previously televised the event between 1973 and 2018, agreed to relinquish the rights to the 2019 tournament.

Point and prize money distribution

Point distribution Below is a series of tables for each of the competitions showing the ranking points offered for each event:

Senior points EventWFSFQFRound of 16Round of 32Round of 64Round of 128QQ3Q2Q1Men's singles20001200720360180904510251680Men's doubles0 13007804302401307010403020210

Wheelchair points EventWFSF/3rdQF/4thSingles800500375100Doubles800500100Quad singles800500100800100

Junior points EventWFSFQFRound of 16Round of 32QQ3Boys' singles1000600370200100453020Girls' singlesBoys' doubles75045027515075Girls' doubles

Prize money The Australian Open total prize money for 2019 was increased by 14% to a tournament record A$62,500,000.

EventWFSFQFRound of 16Round of 32Round of 64Q3Q2Q1SinglesA$4,100,000A$2,050,000A$920,000A$460,000A$260,000A$155,000A$105,000A$75,000A$40,000A$25,000A$15,000Doubles *A$750,000A$375,000A$190,000A$100,000A$55,000A$32,500A$21,000Mixed doubles *A$185,000A$95,000A$47,500A$23,000A$11,500A$5,950 1Qualifiers prize money was also the Round of 128 prize money. *per team

Singles players 2019 Australian Open – Men's singles Champion Runner-up Novak Djokovic Rafael Nadal Semifinals out Lucas Pouille Stefanos Tsitsipas Quarterfinals out Kei Nishikori Milos Raonic Roberto Bautista Agut Frances Tiafoe 4th round out Daniil Medvedev Pablo Carreño Busta Alexander Zverev Borna Ćorić Marin Čilić Roger Federer Grigor Dimitrov Tomáš Berdych 3rd round out Denis Shapovalov David Goffin Fabio Fognini João Sousa Alex Bolt (WC) Pierre-Hugues Herbert Filip Krajinović Alexei Popyrin (WC) Fernando Verdasco Karen Khachanov Nikoloz Basilashvili Taylor Fritz Andreas Seppi Thomas Fabbiano Diego Schwartzman Alex de Minaur 2nd round out Jo-Wilfried Tsonga (WC) Taro Daniel Marius Copil Ryan Harrison Leonardo Mayer Ilya Ivashka Philipp Kohlschreiber Ivo Karlović Jérémy Chardy Gilles Simon Chung Hyeon Stan Wawrinka Márton Fucsovics Evgeny Donskoy Maximilian Marterer Dominic Thiem Mackenzie McDonald Radu Albot John Millman Yoshihito Nishioka Viktor Troicki (Q) Stefano Travaglia (Q) Gaël Monfils Dan Evans (Q) Kevin Anderson Jordan Thompson Pablo Cuevas Reilly Opelka Robin Haase Denis Kudla Henri Laaksonen (Q) Matthew Ebden 1st round out Mitchell Krueger (Q) Martin Kližan Thanasi Kokkinakis (Q) Pablo Andújar Cristian Garín Marcel Granollers Jiří Veselý Lloyd Harris (Q) Jaume Munar Nicolás Jarry Malek Jaziri Luca Vanni (Q) Li Zhe (WC) Guido Pella Hubert Hurkacz Kamil Majchrzak (Q) Aljaž Bedene Ugo Humbert Jack Sock (WC) Bjorn Fratangelo (Q) Bradley Klahn Sam Querrey Ernests Gulbis Nick Kyrgios Steve Darcis (PR) Albert Ramos Viñolas Laslo Đere Marco Cecchinato Mikhail Kukushkin Gleb Sakharov (Q) Mischa Zverev Benoît Paire Bernard Tomic Andrey Rublev Michael Mmoh Miomir Kecmanović (Q) Andy Murray (PR) Federico Delbonis Tennys Sandgren Peter Gojowczyk Matteo Berrettini Roberto Carballés Baena Guido Andreozzi Christopher Eubanks (Q) Damir Džumhur Cameron Norrie Tatsuma Ito (Q) Denis Istomin Adrian Mannarino Prajnesh Gunneswaran (Q) Feliciano López Steve Johnson Janko Tipsarević (PR) Dušan Lajović Jason Kubler (WC) John Isner Kyle Edmund Guillermo García López Marc Polmans (WC) Rudolf Molleker (Q) Pedro Sousa Mirza Bašić Jan-Lennard Struff James Duckworth (WC)

2019 Australian Open – Women's singles Champion Runner-up Naomi Osaka Petra Kvitová Semifinals out Karolína Plíšková Danielle Collins Quarterfinals out Serena Williams Elina Svitolina Ashleigh Barty Anastasia Pavlyuchenkova 4th round out Simona Halep Garbiñe Muguruza Anastasija Sevastova Madison Keys Amanda Anisimova Maria Sharapova Sloane Stephens Angelique Kerber 3rd round out Venus Williams Dayana Yastremska Timea Bacsinszky (PR) Camila Giorgi Hsieh Su-wei Wang Qiang Elise Mertens Zhang Shuai Belinda Bencic Aryna Sabalenka Maria Sakkari Caroline Wozniacki Petra Martić Aliaksandra Sasnovich Caroline Garcia Kimberly Birrell (WC) 2nd round out Sofia Kenin Alizé Cornet Carla Suárez Navarro Eugenie Bouchard Natalia Vikhlyantseva (Q) Johanna Konta Iga Świątek (Q) Madison Brengle Tamara Zidanšek Laura Siegemund (PR) Aleksandra Krunić Bianca Andreescu (Q) Margarita Gasparyan Anastasia Potapova Kristýna Plíšková Viktória Kužmová Irina-Camelia Begu Yulia Putintseva Lesia Tsurenko Katie Boulter Wang Yafan Astra Sharma (Q) Rebecca Peterson Johanna Larsson Tímea Babos Markéta Vondroušová Anett Kontaveit Kiki Bertens Sachia Vickery Zoe Hives (WC) Donna Vekić Beatriz Haddad Maia (Q) 1st round out Kaia Kanepi Veronika Kudermetova (Q) Lara Arruabarrena Mihaela Buzărnescu Clara Burel (WC) Samantha Stosur Peng Shuai (WC) Tatjana Maria Daria Kasatkina Varvara Lepchenko (Q) Ajla Tomljanović Zheng Saisai Dalila Jakupović Ana Bogdan Misaki Doi (Q) Karolína Muchová (Q) Magda Linette Daria Gavrilova Victoria Azarenka Stefanie Vögele Fiona Ferro Zarina Diyas Whitney Osuigwe (WC) Mona Barthel Anna Karolína Schmiedlová Zhu Lin (Q) Pauline Parmentier Destanee Aiava (WC) Dominika Cibulková Anna Blinkova Kateryna Kozlova Viktorija Golubic (Q) Magdaléna Rybáriková Andrea Petkovic Kateřina Siniaková Barbora Strýcová Ekaterina Alexandrova Monica Niculescu Ekaterina Makarova Anna Kalinskaya (Q) Luksika Kumkhum Ellen Perez (WC) Priscilla Hon (WC) Jeļena Ostapenko Harriet Dart (Q) Sorana Cîrstea Vera Lapko Alison Van Uytvanck Taylor Townsend Ons Jabeur Evgeniya Rodina Heather Watson Sara Sorribes Tormo Kirsten Flipkens Monica Puig Alison Riske Julia Görges Ysaline Bonaventure (Q) Bethanie Mattek-Sands (PR) Jessika Ponchet (Q) Kristina Mladenovic Paula Badosa Gibert (Q) Bernarda Pera Polona Hercog

Day-by-day summaries

Champions

Seniors

Men's singles

Novak Djokovic def. Rafael Nadal, 6–3, 6–2, 6–3

Women's singles

Naomi Osaka def. Petra Kvitová, 7–6(7–2), 5–7, 6–4

Men's doubles

Pierre-Hugues Herbert / Nicolas Mahut def. Henri Kontinen / John Peers, 6–4, 7–6(7–1)

Women's doubles

Samantha Stosur / Zhang Shuai def. Tímea Babos / Kristina Mladenovic, 6–3, 6–4

Mixed doubles

Barbora Krejčíková / Rajeev Ram def. Astra Sharma / John-Patrick Smith, 7–6(7–3), 6–1

Juniors

Boys' singles

Lorenzo Musetti def. Emilio Nava, 4–6, 6–2, 7–6(14–12)

Girls' singles

Clara Tauson def. Leylah Annie Fernandez, 6–4, 6–3

Boys' doubles

Jonáš Forejtek / Dalibor Svrčina def. Cannon Kingsley / Emilio Nava, 7–6(7–5), 6–4

Girls' doubles

Natsumi Kawaguchi / Adrienn Nagy def. Chloe Beck / Emma Navarro, 6–4, 6–4

Legends

Men's legends' doubles

Mansour Bahrami / Mark Philippoussis def. Jonas Björkman / Thomas Johansson, 4–3(5–3), 4–2

Women's legends' doubles

Wheelchair events

Wheelchair men's singles

Gustavo Fernández def. Stefan Olsson, 7–5, 6–3

Wheelchair women's singles

Diede de Groot def. Yui Kamiji, 6–0, 6–2

Wheelchair quad singles

Dylan Alcott def. David Wagner, 6–4, 7–6(7–2)

Wheelchair men's doubles

Joachim Gérard / Stefan Olsson def. Stéphane Houdet / Ben Weekes, 6–3, 6–2

Wheelchair women's doubles

Diede de Groot / Aniek van Koot def. Marjolein Buis / Sabine Ellerbrock, 5–7, 7–6(7–4), [10–8]

Wheelchair quad doubles

Dylan Alcott / Heath Davidson def. Andy Lapthorne / David Wagner, 6–3, 6–7(6–8), [12–10]

Singles seeds The following are the seeded players. Seedings are based on ATP and WTA rankings on 7 January 2019, while ranking and points before are as of 14 January 2019. Points after are as of 28 January 2019.

Men's singles