World Championships 2007

Jeremy Wariner produced a pearless run to claim a second straight 400m title in the World Championships in Japan.The American clocked a personal best of 43.35 seconds to lead home team-mates LaShawn Merritt and Angelo Taylor. There were also glorious victories for Allyson Felix, as she won the 200m title, and China's Liu Xiang, who won his first world 110m hurdles title.