Novak Djokovic admitted the furore over his father being filmed with supporters of Vladimir Putin affected him ahead of his Australian Open semi-final victory against Tommy Paul.
Novak Djokovic overcame a troubled build-up and a nervy first set to defeat Tommy Paul and reach his 10th Australian Open final.
Footage has emerged showing Novak Djokovic's father at a pro-Russian demonstration at the Australian Open on Wednesday.
Novak Djokovic equaled the record of former coach Andre Agassi with a 26th consecutive victory at the Australian Open to reach the semi-finals.
Novak Djokovic says accusations from critics that he is "faking" his hamstring injury are only adding to his motivation to win the Australian Open title.
As if his rivals needed any more reasons to fear him, Novak Djokovic is feeling a lot more confident about his chances of winning a 10th Australian Open title.