World number one tennis star Novak Djokovic has announced that he and wife Jelena Ristic have become parents to a baby boy.
The couple, who married in Montenegro in July following Djokovic's Wimbledon triumph, have named their son Stefan.
The 27-year-old wrote on Twitter: "Stefan, our baby angel was born! I am so proud of my beautiful wife Jelena! Thank you so much for your love and support. We love you all!!!"
Djokovic, who is due to compete in next month's ATP World Tour Finals in London, and Jelena began dating back in 2006.
