Julie Johnston's emergence is 'coolest thing ever' for this U.S. hopefulGraham Hays, ESPN.comJun 25, 2015, 11:07 AM ETCloseGraham Hays covers college sports for espnW, including softball and soccer. Hays began with ESPN in 1999.Follow on XEmailPrintSofia Huerta opted out of playing with Mexico in the World Cup to pursue a future with the USWNT. Her teammate since their teens, new American star Julie Johnston, is living that dream now.Read more on espnW.