体坛英语新闻：China's Liu Xiang unsure about London Olympics

Fellow American Jeremy Wariner, who won three Olympic gold and one silver and five world championships medals, won the men's 400 meters in 45.41 seconds for the.

His compatriot David Neville was second in 45.70 seconds and Britain's Michael Bingham was third in 45.84.

Ethiopia's Sentayehu Ejigu clocked a personal best as she sprinted clear to win the women's 5,000m in 14.30.96 while Kenya's Augustine Choge just held off fast-finishing teammate Asbel Kiprop to win the men's 1,500m in a world-leading 3.32.20.

Australian world champion Steve Hooker looked rusty after a six week break. He failed to clear a normally routine 5.70 meters as Germany's Malte Mohr won the men's pole vault.

Australia's Fabrice Lapierre jumped a season's best 8.30m to win the men's long jump with a comfortable 12 centimeters margin over American Dwight Phillips.

The Diamond League awards points depending on performances throughout the 14-event program with the winners of the 16 meets taking home a diamond trophy and cash prize.