Chelsea goalkeeper Petr Cech knows they're massive underdogs ahead of tonight's clash with Barcelona.

Cech has admitted Pep Guardiola's side go into the Champions League semi-final as favourites, but wants Chelsea to upset the odds.

He said: "They are the biggest favourites of the Champions League, they are defending the trophy but anything can happen.

"We have two matches in which we can overturn the prognosis about favourites."