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Argentina's River Plate defender Leonel Vangioni pours water on his face after receiving tear gas before the start of the second time of the Copa Libertadores 2015 round before the quarterfinals second leg football match against Argentina's Boca Juniors at the "Bombonera" stadium in Buenos Aires, Argentina, on May 14, 2015. AFP PHOTO / JUAN MABROMATA (Photo credit should read JUAN MABROMATA/AFP via Getty Images)

Argentina's River Plate defender Leonel Vangioni pours water on his face after receiving tear gas before the start of the second time of the Copa Libertadores 2015 round before the quarterfinals second leg football match against Argentina's Boca Juniors at the "Bombonera" stadium in Buenos Aires, Argentina, on May 14, 2015. AFP PHOTO / JUAN MABROMATA        (Photo credit should read JUAN MABROMATA/AFP via Getty Images)