The world No. 5 rallied past wild card Alex Bolt in five sets and the two-time major winner topped Ajla Tomljanovic. Later on Thursday at the Australian Open, Kyrgios defeated Gilles Simon in the second round.

Bernard Tomic's public takedown of Lleyton Hewitt is just the most glaring example of the once-great tennis nation's fall from grace.

Serena Williams, the favorite against the world No. 1, has dropped just nine games through three rounds.

The 105th-ranked American lost to Australian wild card Alex Bolt, 4-6, 6-3, 6-2, 6-2.