India's Rohan Bopanna and Pakistan's Aisam Ul-Haq-Qureshi stunned second-seeded Daniel Nestor of Canada and Nenad Zimonjic of Serbia 6-3, 6-4 in the US Open tennis third round to enter their second successive Grand Slam quarter-finals.

Bopanna and Qureshi, who made their first quarter-final at Wimbledon earlier in the year, next face 10th-seeded South Africa's Wesley Moodie and Dick Norman of Belgium, who dumped Brazilians Marcelo Melo and Bruno Soares 6-2, 6-2.

The India-Pakistan pair, seeded 16th here, have never won a US Open match together prior to this year's campaign.

In the mixed doubles, second-seeded Leander Paes of India and his Zimbabwean partner Cara Black cruised to the quarterfinals with a 6-4, 6-1, win over Estonia's Kaia Kanepi and Robert Lindstedt of Sweden, who had shocked fourth-seeded Mahesh Bhupathi and Daniela Hantuchova.

Paes and Black next play Anna-Lena Groenefeld of Germany and Mark Knowles of Bahamas.