Argentina thumped Mexico 4-1 on Wednesday in front of new Mexico coach Sven Goran Eriksson.
Eriksson, who took over as Mexico coach on Monday, saw his troops demolished by the South American giants.
Under the caretaker stewardship of Jesus Ramirez Mexico fell behind after just ten minutes when Nicolas Burdisso headed home unmarked inside the box.
Barcelona star Lionel Messi doubled Argentina's the lead on18 minutes with a superb goal after a flowing move
Maxi Rodriguez added a third on the half hour sliding the ball home from an acute angle
Brazilian-born Naelson reduced the arrears for Mexico in the 63rd minute, but Sergio Aguero made it 4-1 eight minutes later.
The defeat showed Eriksson he has a lot to ponder as he prepares to take over following the preliminary World Cup qualifier against Belize later this month.