Australian Open | Melbourne
Welcome to the Evening Standard’s LIVE coverage of the 2019 Australian Open.
Novak Djokovic and Simona Halep return to the Rod Laver Arena on day four at the Australian Open.
Both no.1 seeds are in action as Halep faces American Sofia Kenin a while Djokovic ends the day after Serena Williams's faces off against Canadian Eugenie Bouchard.
Elsewhere, Japan's two hopes - Kei Nishikori and Naomi Osaka - are the first two matches up in the Magaret Court Arena before Britian's last hope Johanna Konta faces Garbine Muguruza in the final match.
We’ll bring you LIVE updates throughout the tournament in Melbourne, so stay tuned for all the action…
Order of play
Rod Laver Arena | Play begins from 12am GMT
- Viktoria Kuzmova (Svk) v (6) Elina Svitolina (Ukr)
- Stan Wawrinka (Swi) v (16) Milos Raonic (Can)
- (1) Simona Halep (Rom) v Sofia Kenin (USA)
- Eugenie Bouchard (Can) v (16) Serena Williams (USA)
- (1) Novak Djokovic (Ser) v Jo-Wilfried Tsonga (Fra)
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Margaret Court Arena | Play begins from 12am GMT
- Ivo Karlovic (Cro) v (8) Kei Nishikori (Jpn)
- (4) Naomi Osaka (Jpn) v Tamara Zidansek (Slo)
- Alize Cornet (Fra) v Venus Williams (USA)
- (4) Alexander Zverev (Ger) v Jeremy Chardy (Fra)
- Johanna Konta (Gbr) v (18) Garbine Muguruza (Spa)
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Melbourne Arena | Play begins from 12am GMT
- Madison Brengle (USA) v (7) Karolina Pliskova (Cze)
- Anastasia Potapova (Rus) v (17) Madison Keys (USA)
- (24) Hyeon Chung (Kor) v Pierre-Hugues Herbert (Fra)
- Alexei Popyrin (Aus) v (7) Dominic Thiem (Aut)
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Court 5 | Play begins from 12am GMT
- (1) Oliver Marach (Aut) & Mate Pavic (Cro) v Simone Bolelli (Ita) & Andreas Seppi (Ita)
- Kimberly Birrell (Aus) & Priscilla Hon (Aus) v Harriet Dart (Gbr) & Anett Kontaveit (Est)
- Radu Albot (Mol) & Malek Jaziri (Tun) v (8) Ben McLachlan (Jpn) & Jan-Lennard Struff (Ger)
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Court 7 | Play begins from 12am GMT
- (3) Jamie Murray (Gbr) & Bruno Soares (Bra) v Roman Jebavy (Cze) & Andres Molteni (Arg)
- (16) Shuai Peng (Chn) & Zhaoxuan Yang (Chn) v Victoria Azarenka (Blr) & Ashleigh Barty (Aus)
- (21) David Goffin (Bel) v Marius Copil (Rom)
- Lleyton Hewitt (Aus) & John-Patrick Smith (Aus) v Marcus Daniell (Nzl) & Wesley Koolhof (Ned)
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Court 8 | Play begins from 12am GMT
- (21) Qiang Wang (Chn) v Aleksandra Krunic (Ser)
- (32) Philipp Kohlschreiber (Ger) v Joao Sousa (Por)
- Ryan Harrison (USA) v (15) Daniil Medvedev (Rus)
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Court 10 | Play begins from 12am GMT
- (3) Gabriela Dabrowski (Can) & Yi Fan Xu (Chn) v Barbora Zahlavova Strycova (Cze) & Marketa Vondrousova (Cze)
- Amanda Anisimova (USA) & Danielle Collins (USA) v (9) Raquel Atawo (USA) & Katarina Srebotnik (Slo)
- Pauline Parmentier (Fra) & Maria Sakkari (Gre) v Xinyu Jiang (Chn) & Qiang Wang (Chn)
- Elise Mertens (Bel) & Aryna Sabalenka (Blr) v (15) Bethanie Mattek-Sands (USA) & Demi Schuurs (Ned)
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Court 12 | Play begins from 12am GMT
- Astra Sharma (Aus) & Isabelle Wallace (Aus) v Jennifer Brady (USA) & Alison Riske (USA)
- (7) Hao-Ching Chan (Tpe) & Latisha Chan (Tpe) v Ellen Perez (Aus) & Arina Rodionova (Aus)
- (10) Irina-Camelia Begu (Rom) & Mihaela Buzarnescu (Rom) v Lizette Cabrera (Aus) & Jaimee Fourlis (Aus)
- (13) Kirsten Flipkens (Bel) & Johanna Larsson (Swe) v Timea Bacsinszky (Swi) & Vera Zvonareva (Rus)
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Court 13 | Play begins from 12am GMT
- Luksika Kumkhum (Tha) & Evgeniya Rodina (Rus) v Alison Bai (Aus) & Zoe Hives (Aus)
- Ilya Ivashka (Blr) v (23) Pablo Carreno-Busta (Spa)
- (28) Lucas Pouille (Fra) v Maximilian Marterer (Ger)
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Court 14 | Play begins from 12am GMT
- Guido Pella (Arg) & Hans Podlipnik-Castillo (Chi) v (11) Rajeev Ram (USA) & Joe Salisbury (Gbr)
- Taylor Harry Fritz (USA) & Cameron Norrie (Gbr) v Mirza Basic (Bih) & Damir Dzumhur (Bih)
- Andrea Petkovic (Ger) & Monica Puig (Pur) v (11) Eri Hozumi (Jpn) & Alicja Rosolska (Pol)
- Matthew Ebden (Aus) & Robert Lindstedt (Swe) v Steve Johnson (USA) & Denis Kudla (USA)
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Court 15 | Play begins from 12am GMT
- James Duckworth (Aus) & Jordan Thompson (Aus) v Kenneth Skupski (Gbr) & Neal Skupski (Gbr)
- Laura Siegemund (Ger) v (28) Su-Wei Hsieh (Tpe)
- Shuai Zhang (Chn) v Kristyna Pliskova (Cze)
- Bernarda Pera (USA) & Rebecca Peterson (Swe) v (8) Su-Wei Hsieh (Tpe) & Abigail Spears (USA)
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Court 19 | Play begins from 12am GMT
- Jack Sock (USA) & Jack Withrow (USA) v (2) Juan Sebastian Cabal (Col) & Robert Farah (Col)
- Raluca Olaru (Rom) & Galina Voskoboeva (Kaz) v (2) Timea Babos (Hun) & Kristina Mladenovic (Fra)
- Dalila Jakupovic (Slo) & Irina Khromacheva (Rus) v Zarina Diyas (Kaz) & Yulia Putintseva (Kaz)
- Philipp Oswald (Aut) & Tim Puetz (Ger) v Pablo Cuevas (Uru) & Fernando Verdasco (Spa)
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Court 20 | Play begins from 12am GMT
- Sorana Cirstea (Rom) & Jelena Ostapenko (Lat) v Ying-Ying Duan (Chn) & Vera Lapko (Blr)
- Timea Bacsinszky (Swi) v Natalia Vikhlyantseva (Rus)
- Evgeny Donskoy (Rus) v Filip Krajinovic (Ser)
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Court 22 | Play begins from 12am GMT
- Alexa Guarachi (Chi) & Alison Van Uytvanck (Bel) v Aliaksandra Sasnovich (Blr) & Taylor Townsend (USA)
- Veronika Kudermetova (Rus) & Sabrina Santamaria (USA) v Belinda Bencic (Swi) & Donna Vekic (Cro)
- Anastasia Pavlyuchenkova (Rus) & Anastasija Sevastova (Lat) v Xinyun Han (Chn) & Darija Jurak (Cro)
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1573 Arena | Play begins from 12am GMT
- (27) Camila Giorgi (Ita) v Iga Swiatek (Pol)
- (12) Elise Mertens (Bel) v Margarita Gasparyan (Rus)
- (12) Fabio Fognini (Ita) v Leonardo Mayer (Arg)
- Taro Daniel (Jpn) v (25) Denis Shapovalov (Can)
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Court 3 | Play begins from 12am GMT
- Bianca Vanessa Andreescu (Can) v (13) Anastasija Sevastova (Lat)
- (11) Borna Coric (Cro) v Marton Fucsovics (Hun)
- Alex Bolt (Aus) v (29) Gilles Simon (Fra)
- (23) Carla Suarez Navarro (Spa) v Dayana Yastremska (Ukr)
