The Albiceleste's players are rallying around captain Lionel Messi as the national team prepares for the crucial Group D clash with Croatia tomorrow.
Messi made an unhappy start to the World Cup on Saturday, missing what would have been a winning penalty as Argentina were held to a 1-1 draw by Iceland.
The result underlined doubts about Argentina's ability to mount a sustained challenge at this World Cup, four years after they reached the final in Brazil.
Another adverse outcome tomorrow afternoon could lead to the unthinkable – a state of affairs in which the Albiceleste could be on their way out at the group stage, mirroring their shock first round exit in 2002.
"We all know what Messi represents to our team and to our country," Ansaldi said. "Not only is he the best player in the world on the pitch, he is also best player off the field. He's in good shape and that's good for us."
Despite the solitary point against Iceland, Argentina can take solace from a performance which saw them muster 26 shots and have 72 per cent possession against Iceland.
Sampaoli is reportedly considering several changes for the game, including drafting in young Boca Juniors forward Cristian Pavón for Ángel Di María for more creativity up front.
Similarly in midfield, Paris Saint-Germain's Giovani Lo Celso could start as Argentina seek more progressive passing options, possibly at the expense of Lucas Biglia. Their jobs would be to supply Messi and goalscorer against Iceland Sergio Agüero with the kind of service on which they would thrive in a potential 3-3-3-1 formation.
Croatia may have secured a vital three points in their 2-0 win against Nigeria in their opening game, but their mood can hardly be described as euphoric.
They came into the tournament under a cloud, with captain Luka Modric charged with perjury in a corruption scandal which has rocked Croatian football.