By Jack Gallagher Hansi Flick has revealed he’s ‘brutally disappointed’ with Germany’s shock 2-1 defeat to Japan in their World Cup opener on Wednesday. The Germans had thoroughly dominated the game in the opening 60 or so minutes, taking the lead through an Ilkay Gundogan penalty. However, their inability to find a second goal in this period would ultimately cost them, as Japan roared back late on to earn a famous 2-1 win at the Khalifa International Stadium. Germany 1-2 Japan: Player ratingsSpeaking to the press after the game, manager Flick said: “We are brutally disappointed. Not only me, …