Razzano won her only two WTA titles in 2007 at Guangzhou and Tokyo. She last reached a final in 2009 at Eastbourne. She had not reached a quarter-final since then until three months ago at Barcelona.
"I had some difficult months," Razzano said. "I played good in Barcelona. It wasn't easy to play with so many things on my mind but I made a good result.
"I want to play a lot. I didn't play a lot when my fiance was very sick. One week I was home to be with him and the next at a tournament. It was hard. It was not only about tennis."
Razzano''s long-time physical coach, Bernard Cabassol, will guide her through the US Open with a new tennis coach possible before she plays in Asia starting in late September.
Razzano, ranked as high as 16th in 2009, hopes to return to the top 50 by the end of the year and resume her place among the top 20 by the end of next year. She has not given up on her dream of winning a Grand Slam title as well.
Falconi, ranked 102nd, advanced when China's Zhang Shuai retired due to heat illness after the American won the first set 6-4. Zhang dropped the first three games, roared back to seize the lead, then dropped the last three games.
"At 0-3, I changed my play and became more aggressive," Zhang said. "After 4-3, I felt no energy. I couldn't move and couldn't breathe so couldn't play."
Russian second seed Nadia Petrova defeated Canadian wild card Eugenie Bouchard 6-2, 6-2 without facing a break point in 52 minutes on the court.
Petrova, seeking her 10th career WTA title but her first since Quebec City in 2008, reached a quarter-final against Serbian fifth seed Bojana Jovanovski, who defeated American Jill Craybas 6-4, 5-7, 6-4.
PTI
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