PARIS (AFP) - Former champion Ana Ivanovic reached the French Open last 16 in just 53 minutes on Friday while Alize Cornet kept home hopes alive by making the second week for the first time.

Serbian seventh seed Ivanovic, the 2008 champion, triumphed over 18-year-old Croatian opponent Donna Vekic 6-0, 6-3.

In dramatic contrast, 29th seeded Frenchwoman Cornet needed two and a half hours to defeat 33-year-old Croatian Mirjana Lucic-Baroni 4-6, 6-3, 7-5 in a match scarred by 85 unforced errors.

Ivanovic won the first seven games before Vekic, the world No. 165 and playing in the third round of a Grand Slam for the first time, stopped the rot and broke for 2-1 in the second set.

But that was as good as it got for the teenager as Ivanovic, watched by German football star boyfriend Bastian Schweinsteiger, swept into a fourth round clash against ninth-seeded Russian Ekaterina Makarova.