Lionel Messi has all the support of his Argentina team-mates and they will "keep by his side", according to Paulo Dybala.
Croatia, who lead Group D after beating Nigeria in their opening game, looked increasingly composed but also faltered in front of goal, including a mis-directed header by Mario Mandzukic on the half-hour.
Argentina knows what is at stake with defender Gabriel Mercado, saying: "This is a vital game".
"To beat Argentina, we'll have to play the flawless match and we'll have to work very hard, from the first second to the very last minute of stoppage time", he said at Wednesday's pre-match news conference.
The 32-year-old said: "I respect Maradona, I think he's great and a superstar. The team will be together when things go well and when things go badly". With a decent World Cup record behind him, Uruguay will be hoping that Suarez finds his touch and take Uruguay through to the next round.More news: Trump wades into German migration row
Pique said he doesn't feel he owes an apology to Barcelona because of the video, which he promoted to his almost 19 million followers on Twitter on the day it was going to be broadcast in Spain. "This group is going to be decided in the last minutes, in the last game".
"The coach has come in for the last 10 matches and it's not easy in that short time", said Crespo, who played for Chelsea in the Premier League as well as having spells at Parma, Lazio and Inter Milan.
"Football is a team sport, but we have these two players, who both have an extra level and an incredible ability of winning football matches with their individual actions out of the blue - and possibly winning a whole tournament". "There's one match already down and there isn't much room to miss opportunities".
Switzerland used a strong defense and midfield to stifle Brazil, and midfielder Valon Behrami made the match very hard for Neymar. But if he does fail again in Russian Federation, there will be sympathy from fellow professionals who feel team mates and chaotic national authorities let him down, while fickle fans forget he is still Argentina's top scorer.
Serbia, meanwhile, is seeking to reach the round of 16 for the first time since 1998, when it was known as Yugoslavia. In Brazil four years ago, Argentina lost to Germany in the final.