Sania Mirza's sensational form continued unabated as she upset seventh seed Marina Hingis to storm into the quarterfinals of the USD 600,000 East West Bank Classic tournament.
Sania beat the World No. 12 Swiss 6-2, 2-6, 6-4 to enter the last eight at the Tier II hard court tournament.
Sania will play the winner of French Virginie Razzano and her good friend Shahar Peer of Israel in the quarterfinals.
The Hyderabadi achieved a career-best WTA ranking of 30 riding on the back of her sterling form at the US hardcourt for the past three weeks.
Sania's impressive build up to the US Open started with the Cincinnati Open where she reached the quarterfinals and followed it up with a final berth at Stanford and a semifinal appearance at Acura Classic last week.
Three top-20 players in Tatiana Golovin, Patty Schnyder, Dinara Safina bore the burnt of Sania's fury in last three weeks.
Today it was the turn of former Wimbeldon Champion Hingis.
With this win, Sania's record against Hingis stands 2-2, the last two having gone in the favour of the Indian.