The Americans appeared poised to become the first team in World Cup history to turn a 2-0 halftime deficit into a 3-2 victory when Maurice Edu knocked in Landon Donovan's free kick in the 86th minute. But referee Koman Coulibaly waved off the goal without explanation. The play-by-play on FIFA's Web site said Edu had been whistled for a foul, but World Cup newcomer Coulibaly neither confirmed nor denied it