One of the biggest changes sees Santiago Carreras move into the flyhalf jersey following the suspension of Tomas Albornoz. In midfield, Lucio Cinti partners Faustino Sanchez Valarolo, while Simon Benitez Cruz starts at scrumhalf to complete a largely refreshed backline. Ignacio Ruiz gets the nod at hooker, packing down between props Boris Wenger and Francisco Moreno. Experienced internationals Guido Petti and Tomas Lavanini form the lock combination, bringing plenty of physicality to the second row. While much of the focus will be on the starting XV, Saturday could also mark a memorable occasion for three players waiting for their first Test caps.