World No.2 Karolina Pliskova and Swiss sixth seed Belinda Bencic are into the Australian Open second round but British No.1 Johanna Konta has crashed out.

Veteran Samantha Stosur won't let her fifth successive Australian Open first round loss force her into retirement, confirming she's planning to return in 2021.

Thirteen Australians hit the courts at the Australian Open on Tuesday as the tournament plays catch-up after Monday's rain.

Novak Djokovic has opened his Australian Open title defence with a testing four-set win over German Jan-Lennard Struff.