Contepomi is joined by the likes of fellow seasoned campaigners Rodrigo Roncero, Mario Ledesma and Juan Fernandez Lobbe as the Pumas prepare for a World Cup pool in New Zealand that also includes England and Scotland.
Argentina coach Santiago Phelan has already named his 30-man squad for the tournament, and Saturday's side for the match at the Millennium Stadium is thought to be the one he hopes to field against England in Dunedin on September 10.
The Pumas will conclude their preparations by facing Aviva Premiership club Worcester next week.
Wales: L Byrne (Clermont Auvergne), L Halfpenny (Cardiff Blues), J Davies (Scarlets), J Roberts (Cardiff Blues), G North (Scarlets); J Hook (Perpignan), T Knoyle (Scarlets); P James (Ospreys), R Hibbard (Ospreys), A Jones (Ospreys), B Davies (Cardiff Blues), A-W Jones (Ospreys), D Lydiate (Newport Gwent Dragons), M Williams (Cardiff Blues), R Jones (Ospreys, captain)
Replacements: H Bennett (Ospreys), R Bevington (Ospreys), A Powell (Sale Sharks), J Tipuric (Ospreys), L Williams (Cardiff Blues), S Jones (Scarlets), A Brew (Newport Gwent Dragons).
Argentina: M Rodriguez; H Agulla, M Bosch, S Fernandez, G Camacho; F Contepomi (capt), N Vergallo; R Roncero, M Ledesma, J Figallo, M Carizza, P Albacete, J-F Cabello, J-M Leguizamon, J Fernandez Lobbe.
Replacements: A Creevy, M Scelzo, M Galarza, A Campos, A Lalanne, N Sanchez, J Imhoff.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The Barbarians are one of the top invitational rugby sides with a long history and classic rugby jersey.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Lions get ready for their matches with this green training jersey. It's what the players wear. Get in the Gear!
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The Lions are ready to get their Australia tour underway. They arrive in Perth on Monday.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
