Murray moves on, Wozniacki reaches quarters

INDIAN WELLS: Australian Open runner-up Andy Murray booked his fourth-round berth at the BNP Paribas Open on Tuesday with a straight-sets victory over unfamiliar foe Michael Russell.

World number four Murray beat the American - ranked 68th in the world - 6-3, 7-5.

But Russell, who has never reached an ATP Tour final, didn''t go quietly, breaking the Briton in the ninth game of the second set as Murray served for the match, putting the set back on serve after Murray''s early break.

"I would have liked to have won, closed it out there 3 and 3, but I did well to stay composed at the end," said Murray, who brought it to a close when he broke Russell in the final game.

"The thing that was good about that match is, a lot of long, tough games. My serve, when I was down, I played well. I saved a lot of break points and played well on a lot of 30-all points," said Murray, who added he was expecting a tough match, despite the difference in ranking.

"In these tournaments, all of the guys are really good players," he said. "When he''s had to play up a level he''s had some great matches with some of the best players."

Making things trickier, Murray said, was the fact that they hadn''t played before.

"It was always going to be difficult because you don''t know their patterns of play and the things they like to do on the court," he said.

"For someone with his game style, he played very, very close up to the baseline, which I wasn''t expecting. I had to do a lot of defending because of that."

World number one Roger Federer, playing his first tournament since beating Murray in the Australian Open final for a 16th Grand Slam crown, was also slated for third-round action on Tuesday.

Sixth-seeded Swede Robin Soderling advanced, downing Spain''s Feliciano Lopez 7-6 (7/3), 6-4 to book a meeting with France''s Jo-Wilfried Tsonga.

Tsonga defeated Spain''s Albert Montanes 4-6, 6-3, 6-3.

On the women''s side, second-seeded Carolina Wozniacki and fourth-seeded Russian Elena Dementieva reached the quarter-finals as defending champion Vera Zvonareva bowed out.

Wozniacki beat Russian veteran Nadia Petrova 6-3, 3-6, 6-0 to line up a meeting with China''s Australian Open semi-finalist Zheng Jie - a 6-3, 4-6, 7-6 (7/1) winner over Australian Alicia Molik.

Dementieva made quick work of France''s Aravane Rezai, 6-3, 6-3, and next faces Polish fifth seed Agnieszka Radwanska, a 6-3, 6-2 winner over France''s Marion Bartoli.

Zvonareva, the last of the six former champions remaining in the women''s draw, fell to eighth-seeded australian Samantha Stosur 6-2, 7-5.