BELO HORIZONTE, Brazil -- Argentina captain Lionel Messi again voiced his support for Alejandro Sabella's offense and said he was confident his team would continue to show improvement.
"We are Argentina, we shouldn't have to worry about how our rivals play," he said during Monday's news conference. "The only thing I worry about is that we are good."
Messi himself played down the quality of his goal and insisted Argentina needed to improve.
Sabella is likely to abandon the 5-3-2 formation he used in an unimpressive first half against Bosnia and return to the 4-3-3 line-up he preferred in qualifying and which gives much more support to Messi.
Sabella said: "Messi in the best player in the world it's not as though he needs a lot of support but when he receives a boost from his team-mates there is no doubt that it empowers him even more to be the best player in the world.
"I think that whatever happens in this World Cup he is among the best players in the history of football.''
Messi himself admitted the changes from five in defence to a 4-3-3 formation made it much easier for him and fellow striker Sergio Aguero.
He said: "As strikers we prefer that system as it gives us more attacking opportunities and if we don't use that system we suffer a bit.
"We as strikers favour that line-up. In the first half I was often on my own and so was Kun [Aguero] and it was very difficult, so there are things to be improved on."
Messi, however, stressed that Argentina has to be prepared to make adjustments.
"The switch between the first and the second half was good. It is good that we adjusted," he said. "We have various options and in a match we can switch from one to the other depending upon the result and the rival."
Information from Press Association was used in this report.