Rafa hails Aussie warrior.
Top seed thrashes compatriot.
Serena Williams is not done yet...
WTA top ten continue to suffer upsets.
Roger Federer survives John Millman onslaught.
Milos Raonic guns down Stefanos Tsitsipas.
It's all going according to plan for Novak Djokovic.
It's over for Serena Williams at the 2020 Australian Open.