World Cup Round 3 begins: What to know as group stage gets complicated

 Round 3 of the World Cup group stage is underway, and the stakes are getting more complicated. Teams are not only trying to win, but also watching standings, goal difference, yellow cards and possible knockout-round matchups. The U.S. has already clinched first place in its group, meaning its final group game is more about health, discipline and rotation than survival. Brazil’s lineup decisions could be trickier, depending on its group position. FOX breaks down why final group games are played at the same time, how the third-place table works and what teams are managing as the knockout round approaches.