Germany were crowned world champions for the fourth time as Mario Gotze's extra-time winner beat Argentina in the 2014 World Cup final in Brazil. --- The Germany substitute controlled Andre Schurrle's cross with his chest before volleying in with seven minutes left. -- Both sides wasted chances in normal time, Argentina's Gonzalo Higuain and Lionel Messi both dragging wide. -- Benedikt Howedes hit the Argentine post with a header late in the first half, but Gotze sparked German celebrations. -- More to follow. BBC, http://www.bbc.com/sport/0/football/28181689