Argentina's Newell's Old Boys' Marcos Caceres, left, fights for the ball with Argentina's Boca Juniors' Walter Erviti during a Copa Libertadores quarterfinal soccer match in Buenos Aires, Argentina, Thursday, May 23, 2013. (AP Photo/Natacha Pisarenko)
Argentina's Newell's Old Boys' Marcos Caceres, left, fights for the ball with Argentina's Boca Juniors' Walter Erviti during a Copa Libertadores quarterfinal soccer match in Buenos Aires, Argentina, Thursday, May 23, 2013. (AP Photo/Natacha Pisarenko)