Caroline Wozniacki has overcome a tough test from China's Zheng Saisai to seal her place in the second round of Wimbledon.
The 21-year-old put the number five seed under immediate pressure and raced into a 4-1 lead in the first set, but the Dane responded by winning five games on the spin to secure a 7-5 victory.
Wozniacki cruised to victory in the second set, with Zheng failing to win a game as the 24-year-old displayed her quality with a 6-0 drubbing to advance to the next stage of the competition.
The number five seed will play Denisa Allertova in the second round.
