Manchester United defender Gabriel Heinze made his comeback for Argentina as they defeated Argentina's Under-20 team 4-0 in the final game in their homeland before leaving for the World Cup.
Heinze has not played a first-team game since suffering a cruciate ligament injury against Villarreal in the Champions League last September.
But the 28-year-old played the entire first half and showed up well.
Argentina boss Jose Pekerman gave all his squad a run-out, except Chelsea striker Hernan Crespo who was ill.
Barcelona striker Lionel Messi also made a comeback after two months out injured.
After a goalless first half, man-of-the-match Rodrigo Palacio came on to grab a hat-trick while Javier Saviola netted the other goal.