Dinara Safina lost to Chinese wild card Zhang Shuai 7-5, 7-6 (5) in the second round of the China Open on Monday, a result that could lead to Serena Williams taking the No. 1 ranking. Venus Williams fell to teenager Anastasia Pavlyuchenkova 3-6, 6-1, 6-4, the second time in a week the Russian has beaten her. More...