The Champions League

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Real's Casemiro celebrates at the end of the the Champions League quarterfinal second leg soccer match between Borussia Dortmund and Real Madrid in the Signal Iduna stadium in Dortmund, Germany, Tuesday, April 8, 2014. (AP Photo/Martin Meissner)

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Chelsea's Demba Ba is congratulated by his teammates and his manager Jose Mourinho, right, after scoring his side second goal of the game during the Champions League quarterfinal second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014. (AP Photo/Matt Dunham).

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Chelsea's Demba Ba celebrates after scoring his side second goal of the game during the Champions League quarterfinal second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014. (AP Photo/Matt Dunham).

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Chelsea's Demba Ba celebrates after scoring his side second goal of the game during the Champions League quarterfinal second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014. (AP Photo/Matt Dunham).

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Chelsea's Demba Ba scores his side's 2nd goal during the Champions League second leg quarterfinal soccer match between Chelsea and Paris Saint-Germain at Stamford Bridge Stadium in London, Tuesday, April 8, 2014. (AP Photo/Kirsty Wigglesworth)

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Chelsea's Demba Ba, in blue right, score his sides second goal of the game during the Champions League quarterfinal second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014. (AP Photo/Matt Dunham).

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Chelsea's Andre Schuerrle, second left, scores his side's first goal during the Champions League second leg quarterfinal soccer match between Chelsea and Paris Saint-Germain at Stamford Bridge Stadium in London, Tuesday, April 8, 2014. (AP Photo/Kirsty Wigglesworth)

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Chelsea's Andre Schuerrle, centre right, shoots and scores the opening goal past Paris Saint-Germain's goalkeeper Salvatore Sirigu during the Champions League quarterfinal second leg soccer match between Chelsea and Paris Saint Germain at Stamford Bridge stadium in London, Tuesday, April 8, 2014. (AP Photo/Matt Dunham).