Barcelona winger Pedro says defeat to Champions League opponents Chelsea was "unfair".

Didier Drogba struck the only goal of the semifinal first-leg clash.

"Surely it is (unfair), because for the way we played we should have gotten a better result. We were better, but in games these things can happen and we have to face it," said Pedro.

"We created enough chances, we played a good game because at all times kept in control. It was a shame they scored that goal on the counter."