MELBOURNE – The Latest on the Australian Open (all times local): 11 a.m. Novak Djokovic — if he is healthy enough to play — and Serena Williams headline Day 7 as the fourth round of the Australian Open gets started.
There will not be any spectators in the stands because of a five-day lockdown imposed by the government in reaction to new COVID-19 cases in the area.
The first quarterfinal berths will be at stake with four women's matches and four men's matches on the singles schedule Sunday (Saturday EST).
Williams continues her quest for a record-tying 24th Grand Slam singles title when she plays No. 7 seed Aryna Sabalenka in the second match at Rod Laver Arena.