Andy Murray advanced into the fourth round of the men's singles at the US Open here Sunday, while Samantha Stosur set up a quarterfinal clash against Vera Zvonareva in the women's singles. British No.1 Murray romped past 25th seed Feliciano Lopez 6-1, 6-4, 6-2, easily moving to the fourth round.
The win took the Scot, who is in pursuit of his first Grand Slam title, an hour and 54 minutes and secured the fourth seed a rematch with the American prospect, Donald Young, who embarrassed him in their only meeting at Indian Wells. .
Andy Roddick, the 21st seed from the United States and the champion in 2003, won 6-1, 6-4, 7-6 (5) against Frenchman Julien Benneteau and will face David Ferrer, the fifth seed from Spain for a quarterfinal place.
In women's draw, Australian Stosur lost the longest tie-breaker 15-17 in women's Grand Slam, but managed to reach the quarterfinals for the second consecutive year by outlasting Russian 25th seed Maria Kirilenko 6-2, 6-7(15), 6-3 in 2 hours and 37 minutes.
Stosur will next challenge Russia's top player Zvonareva, who dismantled 22nd seed German Sabine Lisicki 6-2, 6-3.
The second set alone lasted 84 minutes and was decided by the longest ever tiebreak in women's tennis at a Slam level.
Ninth-seed Stosur had five match points in the epic second set tie-breaker, but was dragged into the deciding set, where the Australian won the contest on her eighth match point when Kirilenko hit her backhand wide.
Juan Martin Del Potro of Argentina, the 2009 US Open champion and the 18th seed this year, lost 4-6, 7-6 (5), 6-2, 7-6 (3) to Gilles Simon.