Novak Djokovic's son is definitely a 'daddy's boy'

World number one Novak Djokovic's son is 'daddy's boy' definitely and loves watching his father beat opponents on court.

During Djokovic's Australian Open quarterfinal, a picture of the Serb's three-month-old son surfaced on social media. The photo was posted by the tennis star's wife and showed the hairless head of young Stefan sitting in a baby chair, with knit booties and a giraffe blanket, watching his dad play tennis on TV.

After Djokovic's match, the on-court interviewer asked the world number player about his number one fan, directing the Serb's attention to the big screens overhead at Rod Laver Arena, Sport24 reported.

Djokovic, who looked up to see the picture of his son, and smiled, said that see how his son enjoys watching TV, adding that he's daddy's boy definitely.

After beating the big-serving Milos Raonic 7-6 (7/5), 6-4, 6-2, to advance to his 25th Grand Slam semifinal, Djokovic added that he didn't know that his son was watching him this way, but claimed that he felt his energy, so that definitely helped him on court.