Women's soccer has never been more popular. At the top of the sport's list of star players is Mia Hamm. Her speed, aggressive play, and ability to "read the field" have sparked every team she's ever played on. At the University of North Carolina, she helped the Tar Heels capture four NCAA championships. Her continually stellar performances with the United States national team led them to win two out of three Women's World Cups, first in 1991 and again...