Baby steps no impediment for Federer, Sampras

LOS ANGELES: The arrival of twin girls in Roger Federer's life will have no negative impact on the Swiss master's tennis career, according to Pete Sampras.

World number one Federer became a father for the first time when his wife Mirka gave birth to daughters Charlene Riva and Myla Rose in Switzerland on Thursday.

"I don't see Roger changing diapers at four in the morning," Sampras, 37, told reporters with a broad grin on Monday, the first day of the LA Open.