Roger Federer is gearing up for the 2018 season, and shared a photo from the gym with the proof. He'll be defending his Australian Open title in January, but this time, with a ranking of No. 2.

The Swiss is set to play the Hopman Cup with compatriot Belinda Bencic, starting on December 30. 

Andrea Petkovic called out the 36-year-old for his scruffy facial hair.

Federer won the Australian Open in January with a ranking of No. 17. It marked his 18th Grand Slam title.