Men's World No. 1 Djokovic teamed up with WTA star Danilovic for a 6-4, 1-6, 10/6 victory against China’s Zhang Zhizhen and Zheng Quinwen to ensure a triumphant United Cup debut for their country at RAC Arena in Perth. Danilovic and Djokovic won seven of the final 10 points to claim a one-hour, 27-minute triumph.