Luis Enrique's side can't be dismissed too lightly ahead of their Champions League quarter final second leg at the Nou Camp, given that they "only" trail 3-0 from the first leg.
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But any hopes they had learnt their lesson disappeared in last week's first leg in Turin where Juventus ran out deserved 3-0 winners and Messi was largely anonymous. Luis Enrique's side did then grow into the game, though, regaining possession and creating half-chances.
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That strike meant Mbappe, who netted twice in the first leg, became the youngest player ever to reach five goals in the Champions League, beating Real Madrid great Raul by 41 days. Rule nothing out, but this one would be even greater.
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The match ended Barca's 15-game home winning streak in the competition and ensured Luis Enrique's men fell one match short of equalling Bayern Munich's record. Juventus were a full-on attacking side during the first leg and this attitude got them through the finish line without conceding a single goal.
Juve Manager Massimiliano Allegri will have to balance an attack with a strong defensive effort to keep Barcelona from joining their Spanish rivals - Real Madrid and Athletic Madrid - in the Champions League semifinals.
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In an interview to Gazzetta dello Sport, former Chelsea coach Gianluca Vialli said the key to stifling Barcelona for Juventus will be to contain the atmosphere at Camp Nou.
Barcelona and Borussia Dortmund are among the top scorers in the Champions League this season and will need their sharp-shooters at their deadliest to stay in the hunt for Europe's biggest prize. "Now we have to focus on he two competitions we have".
Barcelona on the other side are facing a large differential for the second straight round in the Champions League. However, they have been knocked out at that stage in two of the last three seasons. But it was Monaco who had the best chances to score again after that, with Burki tipping over Almamy Toure's looping header and Falcao squandering a fine chance before substitute Germain made sure of their place in the last four.
The first leg of the semis will take place on May 2 and 3, while the return leg will be played a week later on May 9 and 10.
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