Former world number one and 17-time major winner Roger Federer said Tuesday that he and wife Mirka are expecting another child.
Federer became a father in July 2009 when Mirka gave birth to twin daughters, Myla Rose and Charlene Riva.
"Mirka and I are very happy to share the news that Myla & Charlene will be big sisters in 2014! Happy Holidays," the 32-year-old Federer announced on his website.