Manie Libbok missed a late penalty as the Springboks missed out on clinching the Rugby Championship title with a game to spare after going down 29-28 to Argentina on Saturday night.On a hot and humid night in front of a boisterous home crowd at the Estadio Unico Madre de Ciudades in Santiago del Estero, the world champions wasted a number of attacking opportunities to miss out on a victory that would have secured the Championship as lock Eben Etzebeth equalled Victor Matfield’s Bok caps record of 127 Tests.Fassi straight through the gap 💨The Springboks start brilliantly to go 14-0 up…