WTA No. 1 Victoria Azarenka lost in two sets to Dominika Cibulkova, while ATP No. 1 Novak Djokovic is down two sets to Andreas Seppi. Recap: Vika | Live Scores: Nole | Picks: Women | Men | Plus: Grounds Pass | They Said What?

She's confident, competitive, and so far in Paris, commanding: Sloane Stephens hasn't lost a set in three rounds. We learned more about the 19-year-old American earlier this year. Q&A | Stephens into last 16 | Bad habits in the past

Christina McHale couldn't hold her lead over Li Na, but Varvara Lepchenko out-fought a former champ. Steve Tignor looks at fourth-round-bound Lepchenko's unlikely rise. Report | Schiavone loses 3-6, 6-3, 8-6 | Olympic implications

It was a pain-free day for Rafael Nadal, Andy Murray, and Maria Sharapova, who all reached the fourth round with easy wins. Nadal d. Schwank | Murray d. Giraldo | Grounds Pass: Murray no drama queen | Video: Sharapova cruises