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Argentina's Los Pumas prop Rodrigo Roncero (front) is tackled by New Zealand's All Blacks scrum half Aaron Smith during the Rugby Championship fifth round match, at La Plata stadium in La Plata, Buenos Aires, Argentina on September 29, 2012. AFP PHOTO / Juan Mabromata (Photo credit should read JUAN MABROMATA/AFP/GettyImages)

Argentina's Los Pumas prop Rodrigo Roncero (front) is tackled by New Zealand's All Blacks scrum half Aaron Smith during the Rugby Championship fifth round match, at La Plata stadium in La Plata, Buenos Aires, Argentina on September 29, 2012.   AFP PHOTO / Juan Mabromata        (Photo credit should read JUAN MABROMATA/AFP/GettyImages)