Sania Mirza and her Chinese Taipei partner Chia-Jung Chuang reached the doubles quarter-finals of the $220,000 MPS Group Championships here, but not before some late scares.

The Indo-Taipei pair had to fight it out in a marathon three-setter to down Melinda Czink of Hungary and Lilia Osterloh of America 6-0, 3-6, 10-5 in the first round. However, Sania-Chuang duo's route to the last four won't be a cakewalk as fourth seeded pair of Bethanie Mattek-Sands of America and Nadia Petrova of Russia awaits them in the next round.