"I think the biggest challenge will always be mental," Djokovic told British media.
Hollywood heavyweight Will Smith says he's now hooked on tennis after being courtside at the Australian Open
Nick Kyrgios toppled his childhood idol Jo-Wilfried Tsonga to bury his Rod Laver Arena hoodoo and reach the fourth round of his home Australian Open on Friday.
Australian maverick Nick Kyrgios is ready to win over his doubters and can become an 'international sporting superstar'
Nick Kyrgios beat Ryan Harrison 6-4 6-2 in the Brisbane International final on Sunday