It's Twin Girls for Roger Federer

It's Twin Girls for Roger Federer
Roger Federer and Miroslava Vavrinec
Action Press/Zuma

07/24/2009 AT 05:00 AM EDT

There's a new doubles team in town: Roger Federer and wife Mirka are the proud parents of twin girls, the tennis star announced early Friday on his Web site.

Daughters Charlene Riva Federer and Myla Rose Federer arrived late Thursday evening in Switzerland, Federer, 27, shares.

"This is the greatest day of our lives," the Grand Slam champ and No. 1 player in the world said in a statement. "Mirka, Myla and Charlene are all healthy and doing very well."

The couple of nine years – who finally tied the knot in April – had announced the pregnancy in March, but never let on that they were expecting twins. (In fact, word was it was to be a boy, solo.)

Earlier this month, Federer accomplished something far less secret: He won Wimbledon, his 15th Grand Slam tennis title, surpassing Pete Sampras's previous record of 14.


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