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MEDELLIN, COLOMBIA - AUGUST 09: Erik Lamela of Argentina celebrates scoring from the penalty spot during the FIFA U-20 World Cup Colombia 2011 round of 16 match between Argentina and Egypt at the Atanasio Girardot stadium on August 9, 2011 in Medellin, Colombia. (Photo by Jasper Juinen - FIFA/FIFA via Getty Images)

MEDELLIN, COLOMBIA - AUGUST 09: Erik Lamela of Argentina celebrates scoring from the penalty spot during the FIFA U-20 World Cup Colombia 2011 round of 16 match between Argentina and Egypt at the Atanasio Girardot stadium on August 9, 2011 in Medellin, Colombia.  (Photo by Jasper Juinen - FIFA/FIFA via Getty Images)