Three USMNT X-factors for Bosnia knockout clash

USMNT enters the World Cup knockout round against Bosnia and Herzegovina hoping to become only the seventh Concacaf side to win a knockout game, with Balogun, Freeman and Pulisic pegged as the three keys to success. Balogun, rested and clinical, must finish chances against a tall Bosnian defense; Freeman brings size, pace and wing threat to exploit space; Pulisic, back from injury, needs to be fit and lead the attack as the team seeks a historic win before a potential Seattle date with Belgium or Senegal.