Roger Federer beat Japan's Yuichi Sugita 6-4 6-3 in a confident opener at the Hopman Cup on Saturday.
Federer looked like he meant business representing Switzerland in the round robin stage of the competition.
While his three biggest rivals are all battling injury ahead of the Australian Open, Federer looked in mid-season form as he exhibited some exquisite timing and smooth movement.
Though outclassed, Sugita enjoyed his moment - particularly an acrobatic slam dunk smash. Federer and Belinda Bencic make up the Swiss Hopman Cup team, with Sugita and Naomi Osaka playing for Japan.
The 36-year-old Federer looks a strong favourite to win his sixth Australian Open title. Novak Djokovic is a major doubt for the tournament after pulling out of the Qatar Open with an elbow injury; Andy Murray looked short of fitness in his defeat by Roberto Bautista Agut in Abu Dhabi on Friday; and Rafa Nadal withdrew from Brisbane with a knee complaint.
Elsewhere in the tournament, the USA recorded a 2-1 win over Russia thanks to singles wins by Jack Sock and CoCo Vandeweghe.