United Cup: Djokovic-led Serbia edges China, U.S. upsets Britain
PERTH, Australia, Jan. 1 (Xinhua) -- Top-ranked Novak Djokovic beat Zhang Zhizhen, world No. 58, 6-3, 6-2 in 72 minutes here on Sunday as Serbia edged China 2-1 at the United Cup, while the United States started their title defense with a comeback victory over Britain.
Djokovic, who eyes a record-extending 11th trophy at the Australian Open, said after the Group E tie, "I was a little bit rusty at the beginning.