The Chelsea keeper conceded four goals in the Czech Republic's opening game against Russia, but insists his side have learnt their lessons from that heavy defeatCzech Republic goalkeeper Petr Cech has issued a warning to his side's next opponent Greece, ahead of its Group A meeting in Wroclaw.
The Czechs suffered a disappointing 4-1 defeat to Russia in their opening game of Euro 2012, but the Chelsea shot-stopper insists his side will not make the same mistakes twice.
"The lessons we learned were not to make unnecessary mistakes and to play much more aggressively," he told UEFA's official website."They had a lot of space and they have some very good players, so they were able to use that.
"We attacked them too late in the game, and they had already created their chances and scored them. We do not want to repeat those same mistakes and we will, of course, play more solidly in defense."
The 30-year-old could see his back four change for the game against the Greeks, with David Limbersky likely to start and Michal Kadlec set to revert to center-half.
And Cech revealed that there was a great deal of anger in the dressing room after the loss to Russia, which he believes will inspire his side to improve.
"I think the anger has changed into determination. Determination to fix the bad start we had in the tournament," he added.
"We felt the disappointment immediately afterwards, for sure. We did not succeed in any way in that first match, but we know we have another 180 minutes to play to allow us to qualify for the quarter-finals. So we're determined to do just that."Follow GOAL.COM USA on