Austria beat the United States in extra time on Saturday to go into the semifinals of the Under-20 World Cup, where they will meet the Czech Republic, who beat Spain 4-3 on penalties.
Austria came from behind for a surprise victory after the US took the lead in the 15th minute when striker Josmer Altidore headed home Freddy Adu's cross.
Two minutes before the break, Austria drew level thorugh Rubin Okotie.
The game turned Austria's way though two minutes before the end of the first period of extra-time when American defender Anthony Wallace was dismissed with a second yellow card and from the free-kick he had given away, substitute Erwin Hoffer knocked in the winner.