Melbourne, Dec 5: Serena Williams will make her return to the Australian Open for the first time since winning in 2017. That includes injury-prone Rafael Nadal and Andy Murray.
Australian Open organisers said she was among the entries for the opening Grand Slam of the year as she attempts to equal Margaret Court's record of 24.
Williams returned from giving birth to her first child to reach the 2018 Wimbledon and US Open finals, but suffered upset losses in both to leave her stuck on 23 major wins.
Federer will be back to defend his title, along with long-time adversary Novak Djokovic. Caroline Wozniacki defends the women's crown.
Organisers said the world's top 102 women and top 101 men have all confirmed they will be playing.
The only top-100 absentee from the women's draw is 74th-ranked Agnieszka Radwanska of Polandwho recently announced her retirement.