Julian Montoya is among the returning veterans as Argentina reverted to a full-strength lineup for the crucial Pool D clash against Japan on Sunday.
Argentina coach Michael Cheika made 11 personnel changes in total from the side that claimed a 59-5 win over Chile.
Captain Montoya starts in a fresh front row with loosehead prop Thomas Gallo and tighthead Francisco Gomez Kodela.
Lock Guido Petti is one of four players to retain their place in the starting lineup and is joined in the second row by Tomas Lavanini.
Pablo Matera is back in the back row, causing Juan Martin Gonzalez to shift from openside flank to No 8.
Outside centre Lucio Cinti is the only backline player who keeps his starting role, as Santiago Carreras returns at No 10 in place of centurion Nicolas Sanchez, while sharpshooting goalkicker Emiliano Boffelli is back on the wing.
Argentina – 15 Juan Cruz Mallia, 14 Emiliano Boffelli, 13 Lucio Cinti, 12 Santiago Chocobares, 11 Mateo Carreras, 10 Santiago Carreras, 9 Gonzalo Bertranou, 8 Juan Martin Gonzalez, 7 Marcos Kremer, 6 Pablo Matera, 5 Tomas Lavanini, 4 Guido Petti, 3 Francisco Gomez Kodela, 2 Julian Montoya (c), 1 Thomas Gallo.
Subs: 16 Agustin Creevy, 17 Joel Sclavi, 18 Eduardo Bello, 19 Matias Alemanno, 20 Pero Rubiolo, 21 Lautaro Bazan Velez, 22 Nicolas Sanchez, 23 Matias Moroni.
Photo: Saeed KHAN / AFP