"When I was playing, they said soccer was a man's world and that women should remain on the sidelines. All I can say is I'm glad I never had to go up against Mia Hamm."-- Pele For the more than seven million girls--from knobby-kneed tykes to high school and college stars--who are tearing across the country chasing a soccer ball and dreams of glory, there is one name that eclipses all others, male or female: Mia Hamm. With her cheetah-like acceleration...