Semih Aydilek converted a penalty after being felled by Brian Ownby on 30 minutes to open the scoring.

Germany captain Florian Jungwirth doubled the lead two minutes later with a powerful left-footed shot from inside the area.

Manuel Schaeffler ensured Germany would claim all three points in their Group C opener with a close-range effort 13 minutes from time.

In the other group game, Cameroon cruised to a 2-0 win over South Korea.

Andre Akono Effa broke the deadlock with a 19th-minute shot and substitute Germain Tiko wrapped up the win four minutes past the hour mark.