Serena Williams and Roger Federer made are through after easy wins on the third day of the Australian Open.
Women's top seed Williams beat Taiwan's Hsieh Su-Wei 6-1 6-2 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."
British number ones Andy Murray and Johanna Konta continue their campaigns in the second round on Thursday.