Zhao Jing of China and Natalie Coughlin react after the women's 100m backstroke final at the 14th FINA World Championships in Shanghai July 26, 2011.  [Photo/Agencies]

SHANGHAI - China's Zhao Jing upset Natalie Coughlin of the United States to win the women's 100 metres backstroke title at the world swimming championships on Tuesday.

Zhao clocked 59.05 seconds to secure gold, with Russia's Anastasia Zueva taking the silver in 59.06. Coughlin, who had been under world record pace at 50 metres, took bronze in 59.15.