Leander Paes kept Indian hopes alive at the US Open by moving into the quarterfinals of the men's doubles event while Sania Mirza lost her third round women's doubles match to end her campaign at the Grand Slam tournament.

Sixth seeds Paes and his Czech partner Martin Damm on Monday registered a facile 6-4, 6-2 win over Jarkko Nieminen of Finland and Graydon Oliver of the USA to reach the last eight.

The opponents of Paes and Damm in the quarterfinals are yet to be ascertained.

Sania's campaign ended on a disappointing note as the Indian ace, combining with Liezel Huber of South Africa, went down to sixth seeds Czech Kveta Peschke and Francesca Schiavone of Italy 6-3, 3-6, 5-7.

The 11th-seeded Indo-African duo had earlier won the Bangalore Open earlier this year.

The Peschke-Schiavone pairing will meet second-seeded Chinese pair of Zi Yan and Jie Zheng in the quarterfinals.

In boys' doubles, Rupesh Roy along with Roberto Maytin of Venezuala cruised to the second round by posting a convincing 6-2, 6-2 win over home pair of Chase Buchanan and Marcus Fugate.

However, in boys' singles, 15th seed Jeevan Neduncheziyan was toppled by Michal Konecny of Czech Republic in straight sets 6-1, 6-0.