Champions League

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Manchester City's Jesus Navas, left, tackles Barcelona's Jordi Alba during their Champions League last-16 round soccer match at the Etihad Stadium in Manchester, England, Tuesday, Feb. 18, 2014. (AP Photo/Clint Hughes)

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Barcelona's manager Gerardo Martino kicks the ball next to Manchester City's Vincent Kompany during their Champions League first knock out round soccer match at the Etihad Stadium, Manchester, England, Tuesday Feb. 18, 2014. (AP Photo/Jon Super)

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Manchester City's goalkeeper Joe Hart reacts as Barcelona's Lionel Messi celebrates after he scores the first goal of the game from a penalty during the Champions League first knock out round soccer match between Barcelona and Manchester City at the Etihad Stadium, Manchester, England, Tuesday Feb. 18, 2014. (AP Photo/Jon Super)

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Barcelona's Lionel Messi celebrates scoring the opening goal during the Champions League first knock out round soccer match between Barcelona and Manchester City at the Etihad Stadium, Manchester, England, Tuesday Feb. 18, 2014. (AP Photo/Jon Super)

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Manchester City's Alvaro Negredo, center, fights for the ball with Barcelona's Sergi Roberto, left, and Cesc Fabregas, right, during their Champions League first knock out round soccer match at the Etihad Stadium, Manchester, England, Tuesday Feb. 18, 2014. (AP Photo/Jon Super)