Argentina rugby is in a good space at the moment after a series win against the Scots earlier this month.
They won the first and third test and gave them the much needed confidence to head into this years Championship with some good expectation.
They will face Australia first up in the championship at home which give them the best opportunity to start well.
Pumas coach Michael Cheika has welcomed back some very important players in his squad which sees the return of captain Julian Montoya, Tomas Cubelli and Nicolas Sanchez.
Cheika also brought back Cordero and Urdapilleta who was injured against Scotland.
Argentina host Australia in Mendoza on August 6, and in San Juan on August 13.
Forwards: Matias Alemanno (Gloucester), Rodrigo Bruni (Brive), Agustin Creevy (London Irish), Thomas Gallo (Benetton Treviso), Francisco Gomez Kodela (Lyon OU), Juan Martin Gonzalez (London Irish), Santiago Grondona (Exeter Chiefs), Facundo Isa (Toulon), Marcos Kremer (Stade Francais), Tomas Lavanini (Clermont Auvergne), Pablo Matera (unattached), Julian Montoya (Leicester Tigers), Santiago Medrano (Worcester Warriors), Joaquin Oviedo (Perpignan), Lucas Paulos (Brive), Ignacio Ruiz (Jaguares XV), Joel Sclavi (La Rochelle), Nahuel Tetaz Chaparro (Benetton Treviso), Mayco Vivas (Jaguares XV).
Backs: Lautaro Bazan Velez (Rovigo), Gonzalo Bertranou (Dragons), Emiliano Boffelli (Edinburgh), Santiago Carreras (Gloucester), Lucio Cinti (London Irish), Santiago Cordero (Bordeaux Begles), Tomas Cubelli (Biarritz), Jeronimo de la Fuente (Perpignan), Juan Imhoff (Racing 92), Juan Cruz Mallía (Toulouse), Lucas Mensa (Mont-de-Marsan), Matias Moroni (Leicester Tigers), Matias Orlando (Newcastle Falcons), Nicolas Sanchez (Stade Francais), Benjamin Urdapilleta (Castres).