The United States overcame an early deficit against tournament debutants Myanmar in their opening match at the FIFA Under-20 World Cup on Saturday.

Yan Naing Oo put Myanmar ahead after just nine minutes into the match when he stabbed home a shot at close range after the Americans failed to clear a corner.

Goals to Maki Tall in the 17th minute and captain Emerson Hyndman in the 56th clinched the win which took the U.S. to the top of Group A. The winning goal came from a counter-attack led by Rubio Rubin who provided the pass for Hyndman to score.

''We didn't play how we wanted to play, that's for sure,'' U.S. coach Tab Ramos said. ''We found in front of us a very inspired team, a newcomer coming into the World Cup and they fought hard.

''They made us play ugly and it was difficult for us. I'm happy with the win but we're going to have to improve if we're going to go anywhere in this tournament.''