Barcelona's Xavi Hernandez celebrates his goal during their Champions League match against Arsenal at Nou Camp. (AFP Photo)
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Champions League
Arsenal coach Arsene Wenger reacts during their Champions League match against Barcelona at Nou Camp. (Reuters Photo)
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Champions League
Barcelona's Xavi Hernandez (centre) is congratulated by teammates after scoring during their Champions League match against Arsenal at Nou Camp. (AP Photo)
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Champions League
Barcelona's Lionel Messi celebrates after scoring against Arsenal during their Champions League match at Nou Camp. (AP Photo)
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Champions League
Barcelona coach Josep Guardiola gestures during their Champions League match against Arsenal at Nou Camp in Barcelona. (AP Photo)
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Champions League
Barcelona's Lionel Messi celebrates with teammates after scoring against Arsenal during their Champions League match at Nou Camp. (AP Photo)
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Champions League
Barcelona's Andres Iniesta (left) celebrates with Lionel Messi after scoring against Arsenal during their Champions League match at Nou Camp. (AP Photo)
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Champions League
Shakhtar Donetsk's Eduardo (left) challenges AS Roma's Aleandro Rosi as he scores during their Champions League match in Donetsk. (Reuters Photo)
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Champions League
Willian of FC Shakhtar reacts after scoring against AS Roma during their UEFA Champions League match in Donetsk. (AFP Photo)
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Champions League
Dmytro Chygrynskiy (right) of FC Shakhtar vies for the ball with Marco Borriello of AS Roma during their UEFA Champions League match in Donetsk. (AFP Photo)