Gary Cahill of Chelsea and Andres Iniesta of Barcelona compete for the ball
Lionel Messi of Barcelona heads the ball towards the Chelsea goal
Alexis Sanchez of Barcelona shoots at goal only to hit the bar
Lionel Messi of Barcelona is closed down by Frank Lampard of Chelsea during the UEFA Champions League Semi Final first leg match between Chelsea and Barcelona at Stamford Bridge on April 18, 2012
Gary Cahill of Chelsea challenges for the ball with Carles Puyol and Daniel Alves (L) of Barcelona
Lionel Messi of Barcelona breaks during the UEFA Champions League
Didier Drogba of Chelsea celebrates with teammate Juan Mata after scoring
Chelsea's Ivorian forward Didier Drogba celebrates after scoring a goal during the UEFA Champions League semi-final first leg football match between Chelsea and Barcelona
Chelsea's Ivorian forward Didier Drogba celebrates after scoring a goal during the UEFA Champions League semi-final first leg football match between Chelsea and Barcelona
Josep Guardiola coach of Barcelona looks on with Roberto Di Matteo
Cesc Fabregas of Barcelona goes past Ramires of Chelsea
Barcelona's Brazilian defender Dani Alves vies with Chelsea's English defender Ashley Cole
Barcelona's Spanish defender Carles Puyol vies with Chelsea's Ivorian forward Didier Drogba
Didier Drogba of Chelsea reacts during the UEFA Champions League
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