Madrid: Sania Mirza and her Russian partner Elena Vesnina continued their good tempo at the Madrid Open, storming into the quarter-finals after notching up a straight-set win over Nadia Petrova and Anastasia Rodionova.

The unseeded Indo-Russian combination recorded a 6-3 7-5 win over the Russian-Australian pair in the second round of the euro 3,500,000 clay court event of Madrid Open.

Sania and Elena converted all the three break chances that came their way in the first set and two of four in the second to record the win summed up in one hour and 27 minutes.

The combo now have a tough job at hand as they  would face second seeds Kveta Peschke of Czech Republic and Katarina Serbotnik of Slovania in the last-eight round.

The second seeds (Kveta Peschke and Katarina Serbotnik) saw off the challenge of Spanish team of Lourdes Lino Dominguez and Laura Pous-Tio 6-2 1-6 10-3 in their second round clash of the WTA Premier even