GENEVA (AP) Roger Federer is playing a different kind of doubles.

Tennis' top-ranked player became a father for the first time when his wife, Mirka, gave birth to twin girls Thursday.

"I have some exciting news to share with you," Federer said on his Web site and Facebook page. "Late last night, in Switzerland, Mirka and I became proud parents of twin girls."

They are named Charlene Riva and Myla Rose, and Federer said the girls and his 31-year-old wife are "doing great."