Porto's Ricardo Pereira (L) fights for the ball with his teammate Maicon Roque during their training session at Dragon stadium in Porto October 21, 2013. Porto will play against Zenit St. Petersburg ... more 
Porto's Ricardo Pereira (L) fights for the ball with his teammate Maicon Roque during their training session at Dragon stadium in Porto October 21, 2013. Porto will play against Zenit St. Petersburg in their Champions League soccer match on Tuesday. REUTERS/Rafael Marchante (PORTUGAL - Tags: SPORT SOCCER) less 
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Reuters | Photo By RAFAEL MARCHANTE / REUTERS
Mon, Oct 21, 2013 6:28 AM EDT