That was a terrible yellow card. Muller's arm was by his side, not stuck out in a right angle, which would have been more intentional. More of a bad decision since he'll miss the next game too. Ref should give 2nd yellow only if you're sure about these things or they need a way to rescind a yellow if it's not deserved after the game.. NBA refs don't give a 2nd T unless it's a definitive thing to get a guy to miss a game.
Germany's passing looks sharp. Argentina starting to collect themselves later in the half. They're looking good too. I don't think they need to make any major changes at half time.