Read full articleEuro 2012: Czech Republic vs. PortugalThu, Jun 21, 2012, 6:15 PMLink CopiedCzech Republic v Portugal - Quarter Final: UEFA EURO 2012WARSAW, POLAND - JUNE 21: Cristiano Ronaldo of Portugal scores the opening goal with a header during the UEFA EURO 2012 quarter final match between Czech Republic and Portugal at The National Stadium on June 21, 2012 in Warsaw, Poland. (Photo by Alex Grimm/Getty Images) (Getty Images)Cristiano Ronaldo scored with a powerful header late in the match Thursday to send Portugal into the European Championship semifinals with a 1-0 victory over the Czech Republic.