Federer and Vavrinec first met at the Olympic Games in 2000
Roger Federer and his girlfriend Mirka Vavrinec are expecting their first child this summer.
"I have some really awesome news to share with all of you," the 27-year-old Swiss told his website.
"Mirka and I are excited to let you know that we will be parents this summer! Mirka is pregnant and we are so happy to be starting a family."
Federer, the world number two, is currently in Indian Wells, California, for the Masters 1000 event.
"This is a dream come true for us," he added.
"We love children and we are looking forward to being parents for the first time. Mirka is feeling great and everything is going well."
The couple met when they were both competitors at the 2000 Olympic games in Sydney.