New Zealand's Marina Erakovic is out of the tennis singles tournament at the London Olympics after a first round loss to Canada's Aleksandra Wozniak.
Wozniak won 6-2, 6-1 at Wimbledon on Monday.
Erakovic said she struggled for rhythm and was beaten in the 63-minute match, which had been delayed a day due to rain.
Meanwhile, top seed Victoria Azarenka made tough work of her first-round win over Romania's Irina-Camelia Begu winning in three sets 6-1, 3-6, 6-1.
World men's No 1 Roger Federer, of Switzerland, won his second round match against Frenchman Julien Benneteau 6-2, 6-2.
