However, the French forward is growing with confidence in each passing game since the turn of the year and is finally settling down at the Catalonian club.
Ernesto Valverde has no major injury concerns, although he may chose to make a few changes given Barca's trip to Rome in the Champions League on Tuesday. Keeping his free-kick aside, his other two goals came because of two quality passes.
Messi provided the cross for Gerard Pique's late leveller at Espanyol and last weekend hammered in an 89th minute equaliser at Sevilla to complete a quick-fire comeback from two goals down, prompting coach Valverde to remark: "Every time he touches the ball, he is decisive".
Messi's first-half double effectively wrapped the game up before the interval and Barca took their foot off the pedal in the second period.
Cristiano Ronaldo's 24th goal in 15 games for Real Madrid this year was not enough to earn his side a derby victory on Sunday as an Antoine Griezmann equaliser secured Atletico a 1-1 draw.
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"Maybe it's not the correct word but it turned into a bit of a hell, because I started to feel more pressure".
Barca have gone 31 games without defeat this season and were unbeaten in their final seven last season. "We have lost a lot of our offensive potential but we have improved in defence", Messi said earlier in this season. "It also belongs to Luis Enrique and everyone who played for the team a year ago".
The youngster went on to add praise for his teammate Lionel Messi and how he shares the dressing room with the Argentine superstar, "It's great to play with Messi, and for me, it is a pleasure to be able to share a dressing room with the type of players who have won everything".