Top seed Caroline Wozniacki [ Images ] breezed into the third round of the Family Circle Cup with a 6-4, 6-1 win over Czech Barbora Zahlavova Strycova on Wednesday.

The World No 2, who triumphed in Ponte Vedra, Florida [ Images ] last week, broke her Czech challenger's serve five times on the green clay of the stadium court at the $700,000 event.

The 19-year-old Dane, who had a first round bye here, heads the Charleston field following the withdrawal of World No 1 Serena Williams [ Images ].

In other second-round action, third seed Victoria Azarenka [ Images ] of Belarus was forced to retired while leading 6-2 2-2 against American qualifier Christina McHale.

Daniela Hantuchova [ Images ] of Slovakia advanced with a 6-4 2-0 win after Japan's [ Images ] Ayumi Morita limped out with an adductor muscle injury.