Williams is coming to the Hopman Cup.
The 23-time Grand Slam winner will represent the United States in the mixed team event alongside rising star Frances Tiafoe.
It will be her for appearance at the Perth tournament since 2016.
“I always enjoy playing in Western Australia and in front of the crowd there at Perth Arena,” Williams said.
“The Aussie fans are always so warm and supportive and the Hopman Cup has always given me a great start to the season, especially ahead of the Australian Open…