Germany kicks off its World Cup campaign on Monday aiming to continue its domination of Cristiano Ronaldo's Portugal at recent major tournaments.

The Germans enjoyed wins over Portugal at the 2006 World Cup, plus both of the past two European championships and want to get their Group G campaign off to a flying start with a fourth consecutive win.

The Salvador clash is a re-run of Portugal's Euro 2012 opener against Germany, when it went down 1-0 to a second-half Mario Gomez goal.