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The American women have a strong showing at Roland Garros with Stephens and Lepchenko.
The 26 year-old unseeded American has played three tough matches to make it to the fourth round. She defeated unseeded Ksenia Pervak in the first round and former world No. 1 Jelena Jankovic 7-6 (7-4), 4-6, 6-4 in the second round.
However, her biggest victory came in her third round match, defeating the 2010 French Open Champion and No. 14 seed Francesca Schiavone 6-3, 3-6, 8-6.
Her next match is against the fourth-seeded Petra Kvitova from the Czech Republic, but if she has enough left in her tank, she can easily be a deep and dangerous threat to the women's draw.