Result: Petra Kvitova battles through at US Open

Petra Kvitova hits a return against Sorana Cirstea during the Rogers Cup on August 9, 2013
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Petra Kvitova edges into the second round of the US Open with a three-set victory over world number 92 Misaki Doi.

Petra Kvitova has battled into round two of the US Open with a three-set victory over world number 92 Misaki Doi.

Kvitova, seeded seventh, looked on course for a straightforward afternoon when she took the opening set 6-2 inside 36 minutes.

However, Doi capitalised on a number of errors from the Czech in the second as the Japanese levelled the contest 6-3.

Two breaks in the decider saw Kvitova open up a 4-0 lead before she was able to see out the match 6-1.

The former Wimbledon champion will now face Serbia's Bojana Jovanovski for a place in round three.

Petra Kvitova hits a return against Sorana Cirstea during the Rogers Cup on August 9, 2013
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