Indian Wells (California):World number one Rafael Nadal and defending champion Novak Djokovic stayed on course for a semi-final showdown with third-round triumphs in the Indian Wells Masters series on Tuesday.
Top-seeded Nadal triumphed 6-3, 6-3 in a tricky encounter with Russian Dmitry Tursunov, while third-seeded Serbian Djokovic beat German veteran Tommy Haas 6-2, 7-6 (7/1).
"It wasn't one of my best matches, true. It was tough to play against him," said Australian Open champion Nadal, who had to save a break point in the final game but won the next three points to secure the win.
"He didn't give me a lot of rhythm. He played good shots, but at the same time made mistakes. I had more mistakes than usual. But I won 6-3, 6-3, so it's a good win," he said.
Nadal had little time to savor the victory, which earned him a fourth-round match against Argentina's David Nalbandian, who hasn't dropped a set against Nadal in two career meetings, both in 2007 before the Spaniard's rise to number one.
"The first thing is to play well," Nadal said of what he'll have to do against Nalbandian, who beat Serbian Viktor Troicki 6-4, 6-2.
"Second, I have to play really aggressive, because if he has control of the point it is nearly impossible."
Djokovic, who beat Nadal in last year's semi-finals en route the title, started strong but would have preferred to finish off Haas more quickly.
Overall, however, the 21-year-old was satisfied that he was moving in the right direction.
"Better than the first match," was his assessment. "I played really well in the opening set, and then could have done the job a bit earlier. I had some break chances and didn't make a couple returns, and gave him a chance to come back into the match."
Djokovic next plays Switzerland's Stanislas Wawrinka, who saved two match points in the third-set tiebreaker to claim a 2-6, 7-5, 7-6 (10/8) victory over American Sam Querrey.
Sixth-seeded Argentinian Juan Martin del Potro advanced, beating Austrian Jurgen Melzer 6-2, 2-6, 7-6 (7/2). He'll face American wildcard John Isner, a 6-4, 6-4 winner over former world number one Marat Safin of Russia.
Meanwhile Safin's younger sister, top-seeded Dinara Safina, led the way into the quarter-finals with a 7-5, 6-4 victory over US veteran Jill Craybas.
Safina, who can seize the world number one ranking from the absent Serena Williams if she reaches the final, defeated US veteran Jill Craybas 7-5, 6-4 to line up a meeting with eighth-seeded Victoria Azarenka of Belarus, who downed Israeli Shahar Peer 7-5, 6-4.
Safina won all three of her meetings against Azarenka last year.
Rising Russian Anastasia Pavlyuchenkova, 17, continued the run of success that saw her oust second-seeded Jelena Jankovic on the second round, advancing to the quarter finals when opponent Nuria Llagostera Vives retired in the second round with a left hip strain.
Pavlyuchenkova, owner of three junior Grand Slam titles who has leapt to 42nd in the world, was leading 6-3, 3-0 when the Spaniard called it a day.
Pavlyuchenkova will face seventh-seeded Pole Agnieszka Radwanska, who beat Agnes Szavay 6-0, 5-7, 6-3.
Fourth-seeded Russian Vera Zvonareva also advanced with a 6-4, 6-4 victory over China's Li Na. Zvonareva next faces ninth-seeded Dane Caroline Wozniacki, a 7-5, 6-3 winner over Polish wildcard Urszula Radwanska.