Serbia's Novak Djokovic was among big names to progress on day three in Melbourne ©Getty Images

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Women's defending champion Naomi Osaka serves during her comfortable win ©Getty Images
Women's defending champion Naomi Osaka serves during her comfortable win ©Getty Images
Fans cheer on Swiss legend Roger Federer ©Getty Images
Fans cheer on Swiss legend Roger Federer ©Getty Images
Federer comfortably progressed into round three ©Getty Images
Federer comfortably progressed into round three ©Getty Images
Home hope Ashleigh Barty continued her progression ©Getty Images
Home hope Ashleigh Barty continued her progression ©Getty Images
Barty has received huge support in Melbourne ©Getty Images
Barty has received huge support in Melbourne ©Getty Images
Serena Williams is interviewed by Jim Courier after going through ©Getty Images
Serena Williams is interviewed by Jim Courier after going through ©Getty Images
Fifteen-year-old Coco Gauff continued her emergence as a star of the future ©Getty Images
Fifteen-year-old Coco Gauff continued her emergence as a star of the future ©Getty Images
Australia's John Millman provided home cheer in the men's draw ©Getty Images
Australia's John Millman provided home cheer in the men's draw ©Getty Images
The appropriately named Tennys Sandgren won a five-set thriller  ©Getty Images
The appropriately named Tennys Sandgren won a five-set thriller ©Getty Images