Australian Open day two as it happened: Andy Murray causes major Australian Open upset and Djokovic returns a winner

Andy Murray wound back the clock on Rod Laver Arena, pulling off a major upset over Italian 13th seed Matteo Berrettini.

And Novak Djokovic returned to Melbourne Park a winner, even with his hamstring heavily strapped.

While Australian wildcard Kimberly Birrell recorded another upset to stun Estonia's Kaia Kanepi.