Watch The Insane Moment Messi Loses His Cool And Headbutts Opponent

Barcelona's friendly match with Roma became anything but friendly when usually level-headed Messi got into an altercation with Yanga-Mbiwa.

Who is this guy and what has he done with kind and affable Lionel Messi?

FC Barcelona were successfully beating Italian club AS Roma in a friendly pre-season match when a stoppage in the game led to an unexpected clash between Messi and Roma defender Mapou Yanga-Mbiwa.

Barcelona was 1-0 up in the first half when the former Newcastle star leaned in his head toward the Argentinean superstar and said something that infuriated Messi so much that he head-butted the other player and grabbed at his throat before pushing him away.

Barcelona's No. 10 wasn’t even sent off for his aggressive display and both players were shown yellow instead of a red.

Perhaps it’s lucky Messi snapped in the Joan Gamper Trophy, an exhibition game his own team hosts, otherwise he might have received a lengthy ban for losing his temper over a foul.

Watch the violent altercation in the video posted above.

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