Champions League: Match Day 2

Napoli's Hamsik celebrates after defeating Borussia Dortmund in their Champions League Group F soccer match in Naples

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September 18, 2013: Lionel Messi's scores yet another hat-trick for Barcelona; Basel ruined Jose Mourinho's Champions League return with a shock win at Chelsea. Former champions Milan and Porto began the group phase with victories but Borussia Dortmund suffered a jarring defeat at Napoli after being reduced to 10 men.

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