Tennis-Australian Open order of play on Saturday

MELBOURNE, Jan 18 (Reuters) - Order of play on the main showcourts on the sixth day of the Australian Open on Saturday (play begins at 0000 GMT, prefix number denotes seeding):

ROD LAVER ARENA

Zhang Shuai (China) v 6-Elina Svitolina (Ukraine)

Not before 0200 GMT

Dayana Yastremska (Ukraine) v 16-Serena Williams (U.S.)

Not before 0330 GMT

1-Novak Djokovic (Serbia) v 25-Denis Shapovalov (Canada)

Not before 0800 GMT

4-Alexander Zverev (Germany) v Alex Bolt (Australia)

27-Camila Giorgi (Italy) v 7-Karolina Pliskova (Czech Republic)

MARGARET COURT ARENA

4-Naomi Osaka (Japan) v 28-Hsieh Su-Wei (Taiwan)

Not before 0130 GMT

Joao Sousa (Portugal) v 8-Kei Nishikori (Japan)

12-Elise Mertens (Belgium) v 17-Madison Keys (U.S.)

Not before 0800 GMT

1-Simona Halep (Romania) v Venus Williams (U.S.)

28-Lucas Pouille (France) v Alexei Popyrin (Australia)

MELBOURNE ARENA

Not before 0130 GMT

21-David Goffin (Belgium) v 15-Daniil Medvedev (Russia)

Pierre-Hugues Herbert (France) v 16-Milos Raonic (Canada)

Not before 0800 GMT

Timea Bacsinszky (Switzerland) v 18-Garbine Muguruza (Spain) (Compiled by Shrivathsa Sridhar in Bengaluru; editing by Amlan Chakraborty)