TENNIS:

Top-ranked Rafael Nadal announced Wednesday that he will miss the China Open in Beijing and the Shanghai Masters next month because of the discomfort in his right knee that forced him to retire during the U.S. Open semifinal on Sept. 7. ... Camila Giorgi beat two-time defending champ and No. 1 seed Caroline Wozniacki 6-2, 2-6, 6-4 in the second round of the Pan Pacific Open in Tokyo.