Marcelo Bosch returns to Argentina's side for their semi-final against Australia in the only change to the team that beat Ireland on Sunday.
The Saracens centre replaces Matias Moroni, who drops out of the squad altogether, as he returns from a one-match suspension.
There is one change on the bench with Juan Figallo coming in for a Juan Pablo Orlandi, but the biggest news is that Agustin Creevy is fit to take his place.
The Pumas skipper had to go off in the second-half of the win over Ireland, but is fit to start, with Julian Montoya waiting in the wings on the bench.
Argentina: 15 Joaquin Tuculet, 14 Santiago Cordero, 13 Marcelo Bosch, 12 Juan Martin Hernandez, 11 Juan Imhoff, 10 Nicolas Sanchez, 9 Martin Landajo, 8 Leonardo Senatore, 7 Juan Martin Fernandez Lobbe, 6 Pablo Matera, 5 Tomas Lavanini, 4 Guido Petti, 3 Ramiro Herrera, 2 Agustin Creevy (c), 1 Marcos Ayerza.
Replacements: 16 Julian Montoya, 17 Lucas Noguera Paz, 18 Juan Figallo, 19 Matias Alemanno, 20 Facundo Isa, 21 Tomas Cubelli, 22 Jeronimo de la Fuente, 23 Lucas Gonzalez Amorosino.
Date: Sunday, October 25
Venue: Twickenham Stadium, London
Kick-off: 16:00 local
Referee: Wayne Barnes (England)
Assistant referees: Jaco Peyper (South Africa), George Clancy (Ireland)
TMO: Ben Skeen (New Zealand)