Czech Republic manager Michal Bilek has admitted that Portugal deserved to win their quarter-final encounter at Euro 2012 on Thursday.

Cristiano Ronaldo's header 11 minutes from time sealed a 1-0 victory for the Portuguese against a disappointing Czech team.

"The Portuguese were the best side, much stronger in the footballing sense," said Bilek.

"Their attack is very strong. Petr Cech pulled off some stunning saves to keep us in the game.

"We had wanted to play with a solid defence and rely on the counter-attack but we started to run out of energy during the second half."

Portugal will now take on the winner of Spain's clash with France in the semi-finals.