The 2014 World Cup in Brazil -- and its record U.S. TV audiences -- reminded everyone that the passion for soccer in America surpasses all other sports except NFL and college football. But the massive and relatively untapped marketing opportunity in soccer goes far beyond the four-year cycle of World Cup moments. And now marketers are waking up to the potential for aligning with one of America’s fastest-growing passions. Soccer not only has scale, but it leads the digital revolution towards making the “second screen” the first screen of choice for fans following the sport.