Gerardo Torrado has vowed that Mexico will 'play to the death' in their efforts to overcome Argentina.
The Mexicans are set to square up to Diego Maradona's men in the last 16 of this summer's World Cup.
The way Argentina are playing at the moment, having breezed through their group with maximum points, they are regarded by many as the team to beat.
Torrado, though, remains unfazed by the quality of Mexico's second round opponents and has set his sights on springing an upset.
They were sent packing by Argentina at this stage of the competition four years ago and will have revenge in mind when they take to the field on Sunday.
Mexico have lacked the consistency so far to suggest they are able to trouble their rivals from South America, but Torrado believes anything is possible.
"We have an encounter ahead which we have to enjoy but we will play to the death to win it," said the 31-year-old midfielder.
"Against Uruguay (a 1-0 defeat on Tuesday) we lacked determination but each squad has circumstances that make them unique. There are different factors.
"This game (against Argentina) is necessary to continue advancing and to follow our dream so we will not lack attitude."