NEW YORK, NY, USA - There was one surprise and one comeback as the first two doubles quarterfinals took to the courts of the the US Open on Tuesday.

The first match yielded the big upset, with No.1 seeds Gisela Dulko and Flavia Pennetta suffering a 63 63 loss to No.6 seeds Vania King and Yaroslava Shvedova. Dulko and Pennetta struggled to maintain the form they've been keeping all year, the form that has taken them to five titles together; King and Shvedova were on their game however, breaking their opponents five times (including four breaks of Pennetta's serve) en route to the straight set win.

King and Shvedova are now 10-0 as a team at Grand Slams, going 6-0 in their first major together at Wimbledon and now 4-0 here in New York.

The other team that reached the Wimbledon finals, Elena Vesnina and Vera Zvonareva, weren't so lucky. Seeded No.14 here, they lost out to No.9 seeds Cara Black and Anastasia Rodionova, 46 75 64, having led 64 42 and even coming within two points of the win with Zvonareva serving for it at 64 54.