Roger Federer and his girlfriend Mirka Vavrinec have been together for years, and on Thursday announced that they are expecting their first child this summer. The 13-time Grand-Slam champion, who is currently in Indian Wells, Calif. for the Masters' Tournament, wrote on his official website:

“Dear Fans,

I arrived in Indian Wells earlier this week and I am eager to get back out on court. My back is feeling much better and I am ready to go.

I also have some really awesome news to share with all of you: 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 together. This is a dream come true for us. We love children and we are looking forward to being parents for the first time. Mirka is feeling great and everything is going well.

Speak soon and thanks for all your continued support!

Roger

Looks like we have a future little tennis star in the making!