Australian Open champion Novak Djokovic

Djokovic through to round two

Djokovic survived a scare on Rod Laver Arena, but the 16-time grand slam champion eventually moved into the second round at Melbourne Park.

Eyeing a record-extending eighth Australian Open title, second seed Djokovic will face either Tatsuma Ito or Prajnesh Gunneswaran for a spot in the third round.

World number 37 Struff presented a tricky opening test for Djokovic, especially with Craig O'Shannessy - the Serbian star's former chief strategist - now in his corner.