The full - time whistle blew as a rather sluggish German display saw the reigning world champions come through Group C unbeaten .
They will have to improve in the latter stages to claim back - to - back major tournaments .
The full - time whistle blew as a rather sluggish German display saw the reigning world champions come through Group C unbeaten , although they will have to improve in the latter stages to claim back - to - back major tournaments .