Novak Djokovic The Serbian tennis ace reigned in Beijing for the fourth time in five years when he beat Spanish rival Rafael Nadal to win the China Open. Djokovic's 6-3 6-4 win in the final was some compensation for losing his world No1 ranking to Nadal, who had beaten him in three previous meetings. "I needed to to win this today. I really wanted to get my hands on the trophy," said Djokovic. Apple The technology giant has been having mixed fortunes on the mainland but it was celebrating a second-quarter hat-trick in Hong Kong when it led all brands in sales of smartphones, media tablets and laptops. Market analysts at IDC Asia-Pacific said Apple overtook Samsung during the quarter to regain No 1 spot among smartphone brands in the city. The other top-selling smartphone suppliers were Sony, HTC and LG Electronics. Janet Yellen US President Barack Obama announced his nomination of the 67-year-old economist and professor to chair the Federal Reserve. If the Senate rubber-stamps her nomination for the four-year term, Yellen will rise from Fed vice-chairwoman to become the first woman to lead the 100-year-old central bank. Obama praised Yellen as "one of the nation's foremost economists and and policymakers".