Jelena Jankovic (L) of Serbia receives a medical timeout during the women's singles final against Serena Williams of the United States at the China Open tennis tournament in Beijing, capital of China, Oct. 6, 2013. Jelena Jankovic lost 0-2. (Xinhua/Xing Guangli)
Serena Williams of the United States holds up the trophy during the awarding ceremony of the women's singles final against Jelena Jankovic of Serbia at the China Open tennis tournament in Beijing, capital of China, Oct. 6, 2013. Serena Williams won 2-0 to claim the title. (Xinhua/Xing Guangli)
Serena Williams of the United States greets the audience after the women's singles final against Jelena Jankovic of Serbia at the China Open tennis tournament in Beijing, capital of China, Oct. 6, 2013. Serena Williams won 2-0 to claim the title. (Xinhua/Gong Lei)
Serena Williams of the United States holds up the trophy during the awarding ceremony of the women's singles final against Jelena Jankovic of Serbia at the China Open tennis tournament in Beijing, capital of China, Oct. 6, 2013. Serena Williams won 2-0 to claim the title. (Xinhua/Gong Lei)
Serena Williams of the United States holds up the trophy during the awarding ceremony of the women's singles final against Jelena Jankovic of Serbia at the China Open tennis tournament in Beijing, capital of China, Oct. 6, 2013. Serena Williams won 2-0 to claim the title. (Xinhua/Li Wen)