Jorge Sampaoli's side must now beat Nigeria to stand a chance of qualifying, although they could still miss out shoud Iceland manage an unlikely victory over Croatia, and Petit - a World Cup victor with France in 1998 - insists Messi must shoulder some of the blame.
It had been suggested that 1986 World Cup victor Jorge Burruchaga, the team's technical director, would replace Sampaoli, but the claims were strongly denied by the Argentina Football Association (AFA) on Saturday.
Argentina's Lionel Messi looks dejected after the match.
"I pray that we have the support of the 44 million Argentines, all of them kicking toward the same goalpost".
The 25-year-old produced two virtuoso second-half finishes to keep the Super Eagles in the hunt for a place in the last 16 on Friday.
"I would just like to say that when the mission and the shirt that we represent is much bigger than any type of interpretation you may be making, then we will be all united together for the same goal".
Jorge Sampaoli's men are facing a group-stage exit in Russian Federation after collecting just one point from their opening two games.
Iceland held Argentina in 1-1 its opening match but needs to win its last Group D game after losing to Nigeria 2-0.
And whilst Ronaldo is making the most of his chances, the Chelsea midfielder claimed Messi is struggling to match his output due to having the weight of Argentina's hopes on his shoulders as he weighed in on the debate surrounding the two greatest players now in the game.
"You saw that with Iceland", defender Dejan Lovren said ahead of the Argentina clash late Thursday. When things go well with Barcelona he's a terrific player. The Albiceleste is bottom of group D table, two points adrift of second, and need a win against Nigeria to stand any chance of progressing.
Oliseh added, "I will love to see Belgium play Nigeria in the knockout stages of the World Cup".
'Lionel Messi is the greatest thing we have in Argentina and we must take care of him, ' Macri said shortly after the player's bombshell announcement. Fabregas wanted to let people know that Ronaldo's goals have come via situations that are easier to score from.
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