Sania Mirza kept Indian hopesalive by progressing to the women's doubles quarter-finals even as country's challenge ended in the men's doubles with the defeat of Rohan Bopanna and his partner Rajeev Ram in the second round of ATP-WTA Sony Open, at Miami.Sania and her American partner Bethanie Mattek-Sands overcame a fighting pair of Jarmila Gajdosova and SabineLisicki 6-1 3-6 10-7 in the second round.They will now fight it out with Sara Errani and Roberta Vinci for a place in the semifinals.In the men's doubles second round, unseeded Bopanna and Ram were knocked out by the formidable second-seeded pair of Marcel Granollers and Marc Lopez 6-4 7-6(5).Somdev Devvarman was floored by world number one Novak Djokovic in the men's singles while Leander Paes and MaheshBhupathi had exited from the doubles after suffering second-round defeats with their respective partners.