World number two Ana Ivanovic raced into the quarter-finals of the French Open with a 6-0, 6-0 whitewashing of unseeded Czech Petra Cetkovska on Sunday.

The Serb, who reached the final at Roland Garros last year, will meet either Swiss 10th seed Patty Schnyder or Slovenia's Katarina Srebotnik, seeded 27th, for a last-four spot.

Relying on her sharp forehand, Ivanovic took the opening set in 24 minutesand showed no drop in concentration in the second.

The Australian Open runner-up easily saved two break points, the only ones she faced, before wrapping it up after 54 minutes when Cetkovska netted a bakchand.