PRAGUE, June 26 - Czech World Cup goalkeeper Petr Cech of English champions Chelsea underwent a shoulder operation on Monday, CTK agency said.

CTK quoted Cech's agent David Travnicek as saying the surgery, performed in London on Monday morning to resolve long-term trouble in both shoulders, had been successful.

Cech, 24, helped Chelsea win the last two English premier league titles and also played for the Czech Republic in all Group E matches at the World Cup in Germany. The Czechs were eliminated in the group stage.