It should be noted that if Williams managed to win the tournament, she would match Australian tennis player Margaret Court's all-time record tally of 24 Grand Slam titles. She first won it against her older sister, Venus, back in 2003, and has added six other Open victories since then.
"Serena Williams, now ranked 16, will make her highly anticipated return to Melbourne for the first time since winning in 2017 when eight-weeks pregnant with baby Alexis Olympia", said tournament organiser Craig Tiley.
The last time the basis of the Open championship of Australia has not played none of the Ukrainian tennis players in 2008.
After falling in the final round of qualifying past year, Bernard Tomic has earned direct entry to next month's main draw after an encouraging season highlighted by his fourth ATP title win in Chengdu in September.
The organisers of the event have claimed that as many as 102 top women tennis players and 101 top men tennis players have confirmed that they will participate in the 2019 Australian Open. Wimbledon had recently made a similar change, to be implemented in 2019 where-in that competition tie-breakers will be played at 12-12 in the deciding set and follow the regular singles format of players needing to reach 7 points by a margin of two. The tournament's leading sponsor is Kia, who is the main sponsor of the tournament from previous years too.
Australian Open is slated to be held from January 14 to 27 at Melbourne, Australia.
Tournament officials said Wednesday that Andy Murray, who is returning after an injury layoff, has entered using a protected ranking.
Caroline Wozniacki will focus on her maiden grand slam title defense at Melbourne Park.