Novak Djokovic earned a hard-fought win against Quentin Halys to move into the quarter-finals of the Adelaide International on Thursday.
The Serb rallied back from 5-2 down in the first set and 5-3 in the second to beat the Frenchman 7-6 (7-3) 7-6 (7-5).
Djokovic will face Canada's Denis Shapovalov on Friday as he continues his build-up to the Australian Open.
Australia's Nick Kyrgios has withdrawn from the second week of the Adelaide tournament with an ankle injury.
The 27-year-old also pulled out of last week's United Cup and so will have had limited match time going into the Australian Open, which gets underway on 16 January.