Maria Sharapova and Justine Henin set up a third-round showdown at the French Open by winning matches suspended overnight because of darkness.

Sharapova finished off Kirsten Flipkens 6-3, 6-3, and four-time champion Henin beat Klara Zakopalova 6-3, 6-3 Friday in Paris.

A schedule backlog caused by rain created a parade of champions on the sixth day of the tournament. Roger Federer, Rafael Nadal, Novak Djokovic and Venus and Serena Williams were among those who advanced, while defending women's champion Svetlana Kuznetsova was upset by fellow Russian Maria Kirilenko.

Now the champions start playing each other. Henin is 6-3 against Sharapova.

"We've had some great matches in the past," Sharapova said. "I've had some tough losses and great wins. I look forward to this one."

Henin, seeded 22nd, has French Open winning streaks of 23 matches and 39 sets. The 12th-seeded Sharapova is seeking the only Grand Slam title she has yet to win.