Belgrade - World No 1 Novak Djokovic is the proud father of a baby boy.
Djokovic tweeted that the child's name is Stefan.
"Stefan, our baby angel was born!" Djokovic posted on Twitter early on Wednesday.
"I'm so proud of my beautiful wife Jelena! Thank you so much for your love and support. We love you all!!!"
RTS, Serbia's state TV, reported that Djokovic's wife gave birth to their first child on Tuesday in Nice, France, close to Monaco where they reside.
The new parents first met in high school, and they have been together for more than eight years.
The couple married on July 10, four days after Djokovic won Wimbledon.
Djokovic added that he would spend "several days with
the baby and wife Jelena" before travelling to Paris for next week's
final Masters Series event of the year.
Djokovic is the defending champion in the French capital and a strong
tournament will increase his chances of ending the year at the head of
the rankings, resisting the challenge of Roger Federer.