The United States won its first medal of the track cycling world championships on Friday, beating Canada to take gold in the women's team pursuit. The quartet of Sarah Hammer, Kelly Catlin, Chloe Dygert and Jennifer Valente led from start to finish to cross the line in 4 minutes, 16.802 seconds. ''It's my eighth world title but my first team title, I have been waiting my whole career to get a team title,'' Hammer said. More...