Mathias Mier of Uruguay's Penarol celebrates his goal against Argentina's Velez Sarsfield in Buenos Aires...
Mathias Mier (bottom, R) of Uruguay's Penarol celebrates with teammates Juan Manuel Olivera (L) and Alejandro Martinuccio after he scored a goal against Argentina's Velez Sarsfield during their Copa Libertadores semi-final soccer match in Buenos Aires June 2, 2011. REUTERS/Enrique Marcarian (ARGENTINA - Tags: SPORT SOCCER)