Ronaldo blazes his early penalty wide - it would prove to be the defining moment of the match, as United struggled to build any momentum

United forward Ronaldo reacts to his missed penalty in the second minute in a stunning start to the Champions League semi-final

Barca's players take exception to a decision by the referee, Massimo Busacca of Switzerland

Barcelona's Italian defender Gianluca Zambrotta sends his counterpart Patrice Evra flying with a sliding tackle

Ronaldo's progress is checked again on an unhappy night for the Portuguese maestro

Ronaldo takes a brutal tackle in a sensitive area from Barcelona stopper Rafael Marquez

United boss Sir Alex Ferguson (right) and his assistant Carlos Queiroz are never slow to discuss the referee's performance with match officials

It was all hands on deck for United as Frank Rijkaard's Barcelona team laid siege to their goal for periods of a hard-fought match

Gianluca Zambrotta (left) and Ji-Sung Park compete for a header as Barcelona mount yet another attack

United playmaker Paul Scholes throws his weight around - but it wasn't enough for the Red Devils to come away with a win from the Nou Camp

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