Victoria Azarenka: 'I had to stay aggressive'

Victoria Azarenka has admitted that she failed to keep to her gameplan towards the end of her US Open fourth-round clash with Varvara Lepchenko.

The 20th seed came through by a 6-3 6-4 scoreline at Flushing Meadows, but not before she had failed to serve out the match at the first time of asking.

After securing her win, the 26-year-old said: "I felt at 5-3 that I never went for my shots, she didn't give me much rhythm. I told myself to be aggressive and go for it."

The former world number one will play either Sabine Lisicki or Simona Halep in the last eight.