World number one Victoria Azarenka produced an efficient display to dismiss the threat of Aleksandra Wozniak in straight sets at the French Open.

Azarenka lost her serve twice - largely due to the seven double faults she delivered - but responded with four breaks of her own.

After 86 minutes on Court 1, Azarenka completed the 6-4 6-4 victory just as the light was beginning to threaten to suspend play.

The Belarusian will now face Slovakia's Dominika Cibulkova in the last 16.