Australian Open Day 4 Highlights: Nadal, Halep progress; Sania exits

Australian Open Day 4 Highlights: Rafael Nadal, Novak Djokovic and Roger Federer advanced to the next round of the Australian Open. Nadal won his second round clash 6-3, 7-6, 6-1 at the Rod Laver Arena while Sania Mirza exited the tournament as she retired mid-way into her women’s doubles first-round match due to a calf injury. Simona Halep also progressed into the next round after beating Jennifer Brady 7-6, 6-1.