Bressanone/Brixen, Italy – American sprinter Ashton Purvis is out to redeem herself after a disappointing 2007 World Youth Championships in Ostrava. In Ostrava, Purvis ran 12.04 for seventh in the 100m final. She had times on 11.74 in the heats, 12.09 in the quarterfinals and 11.81 in the semi-finals, but said that disappointment makes her more determined to change this time around. “It’s...