Andy Roddick beat fellow American James Blake 6-3, 7-5 in the second round of the BNP Paribas Open at the Indian Wells Tennis Garden on Sunday.

Roddick's eighth win in 11 matches with Blake set up a third-round meeting with US Davis Cup teammate John Isner, who opened the day with a 6-3, 7-6 (2) victory over Ricardo Mello of Brazil.

Three-time tournament champion Roger Federer overcame Igor Andreev 7-5, 7-6 (4), while Australian Open champion and No. 3 seed Novak Djokovic stayed perfect for the year (13-0) with a 6-0, 6-4 win over Andrey Golubev of Kazakhstan in the opening match of the night session.

Two-time women's champion Kim Clijsters of Belgium struggled but beat Italy's Sara Errani 6-3, 2-6, 6-4 and 2010 champion Jelena Jankovic of Serbia ousted Julia Goerges 6-2, 6-4 to join Francesca Schiavone of Italy, Ana Ivanovic of Serbia and Marion Bartoli of France in the third round.

In the night match, No. 3 seed Vera Zvonareva of Russia lost to Dominika Cibulkova of Slovakia 4-6, 7-6 (4), 6-4.

A lingering shoulder problem is giving Clijsters increased cause for concern with the WTA Tour's claycourt season fast approaching.

Roddick rallied from a 0-3 deficit in the second set by losing just two points and hitting 10 of his 13 aces in his final five service games. Isner had 12 aces and did not face a break point against Mello.

Strategy

Roddick said he thought he performed acceptably, but "it was tough to get a gauge on how I was playing because James was playing so aggressively. From the first game his strategy was, he didn't want to let me get a rhythm. I felt like he was coming out of his shoes (trying to hit winners). It was tough, but the numbers looked good afterward. I felt like I was hitting the ball okay, so it worked out."

Federer, who'll meet Juan Ignacio Chela of Argentina in the third round, is 4-0 lifetime against Andreev.

"I thought it was another tough match against him," said Federer, who is 15-2 this year.

"I felt always kind of in control in the first set, even though I was down, 5-4. I felt I was in the match quickly against him, which maybe in the past wasn't always the case because he's got a lot of spin and a lot of pace."