Last Updated: Saturday, September 3, 2011, 19:45
The United States maintained their grip on the women`s 4x400 meters crown with their third consecutive world championships victory.
Last Updated: Sunday, June 26, 2011, 15:19
Allyson Felix kept alive the possibility of a bid for a world championship double in the 200 and 400 metres as she clinched her first national 400m title at the U.S. trials on Saturday.
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