Serena Williams and Roger Federer made swift progress as the leading names were untroubled in the third day session of the Australian Open.
Women's top seed Williams beat Taiwan's Hsieh Su-Wei 6-1 6-2 on Rod Laver Arena before men's second seed Federer saw off Alexandr Dolgopolov 6-3 7-5 6-1.
"Conditions are extremely quick, so you're not going to find much rhythm," he said. "I thought I served great."
Maria Sharapova beat Belarusian Aliaksandra Sasnovich 6-2 6-1.
Novak Djokovic plays Quentin Halys in Wednesday's late session, while British number ones Andy Murray and Jo Konta resume their campaigns in the second round on Thursday.