German winger Thomas Müller will miss the semifinal, should Germany advance past Argentina, after picking up a yellow card in the 35th minute against Argentina.
Müller was shown yellow after the a ball off the chest of Lionel Messi hit his left arm as the German tried to trap it.
Müller scored in the third minute to give Germany the lead, his fourth goal of the tournament.
Carrying a yellow card into the match, Müller will be suspended for either the semifinal (if Germany advances) or the first match of qualifying for the 2012 European Championships.
Germany remains up 1-0 on Argentina in the 41st minute.