Salvador (Brazil): Thomas Mueller marked his 50th international with a hat-trick as Germany strolled to a 4-0 World Cup victory over a Portugal side reduced to 10 men late in the first half of a disappointingly one-sided Group G match on Monday.

A decisive first-half saw Germany race into 3-0 lead as Mueller converted a penalty, then fired home their third on the stroke of half-time after a Mats Hummels header had also hit the target.