Stroll for Serena

Serena Williams was happy with her start to the Sony Ericsson Open in Key Biscayne, Miami, as she dropped just five games to Chinese opponent Zhang Shuai.

Williams, returning to the WTA Tour for the first time since losing to Ekaterina Makarova in round four of the Australian Open in January, was simply too strong for a second-round opponent who was in the tournament on a wild card.