The footballing superstar was felled after a clash was goalkeeper Javi Varas only three minutes into the match.
Messi has a tear in the internal collateral ligament of his left knee. He will be out for around 7-8 weeks pic.twitter.com/TLor97gmou
— FC Barcelona (@FCBarcelona) September 26, 2015
He remained grounded for three minutes as he was tended to by doctors, before eventually deciding that he could continue.
However, it quickly became apparent that Messi would be unable to run off the injury, and he was replaced soon afterwards by Munir.
The Argentine was rushed to hospital for tests, with the club doctors, the fans at the Camp Nou, and his teammates—notably Andres Iniesta—particularly agitated by the forward’s misfortune.
Barca subsequently confirmed on their official Twitter page that the attacker will miss approximately seven to eight weeks of action, making Messi a doubt for the first Clasico of the season—the November 22 meeting with Real Madrid.